阅读说明：本技术 一种在房建工程中的化学植筋方法 (Chemical bar planting method in house construction engineering ) 是由 龙明华 周军强 汤宇 刘云龙 胥俊玮 赵建斌 陈敏 徐毅勇 雷勇祥 彭学军 凌涛 于 2021-09-28 设计创作，主要内容包括：本发明保护一种在房建工程中的化学植筋方法,所述方法包括以下步骤：(1)定位；(2)钻孔；(3)清孔；(4)钢材除锈；(5)锚固胶配制；(6)植筋；(7)固化、保护；(8)检验。本发明有效加快了框架柱、梁板等施工进度；有效解决了植筋位置的准确性,提高了施工进度和施工质量。(The invention provides a chemical bar planting method in a building construction project, which comprises the following steps: (1) positioning; (2) drilling; (3) cleaning holes; (4) derusting steel; (5) preparing an anchoring adhesive; (6) planting bars; (7) curing and protecting; (8) and (6) checking. The invention effectively accelerates the construction progress of frame columns, beam plates and the like; the accuracy of the bar planting position is effectively solved, and the construction progress and the construction quality are improved.)

1. A chemical bar planting method in building construction engineering is characterized by comprising the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d + (4-10 mm), the depth of the drilled hole is 12d-15d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 3-5 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 50-65 parts of cement, 50-60 parts of silica fume, 15-20 parts of machine-made sand, 15-20 parts of bisphenol F diglycidyl ether, 12-14 parts of melamine cyanurate, 10-12 parts of methyl ethyl ketone, 7-8 parts of bulk polymerization sodium butadiene rubber, 10-12 parts of coupling agent, 10-15 parts of fumed silica, 10-15 parts of vinyl triamine, 10-12 parts of nano anti-settling material, 8-10 parts of acrylic copolymer, 1-2 parts of sodium lignosulfonate, 0.5-1 part of tartaric acid and 0.5-1 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 5-25 ℃, and the steel bars cannot be disturbed within 12-24 hours after the steel bars are planted;

(8) checking; and 3-4 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to the sampling rate of 1-2 per mill, and making a drawing test record.

2. The method for chemical bar planting in building construction engineering according to claim 1, wherein in the step (1), if the position of the chemical bar planting has a stressed steel bar, the drilling position is properly adjusted and positioned at the inner side of the stirrup or the inner side of the distribution bar; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

3. The method for chemical bar planting in building construction engineering according to claim 2, wherein in the step (2), the hole is drilled by using an electric hammer.

4. The method for chemical bar-planting in building construction according to claim 3, wherein in the step (3), the holes of the drilled holes are kept dry, and if any, the holes are cleaned and filled with anchor glue.

5. The chemical bar planting method in the house building engineering according to claim 4, wherein in the step (4), an angle grinder and a steel wire wheel sheet are adopted to remove rust on steel, wherein the rust removal length is greater than the anchoring length of 5-8 cm; and the steel bars after rust removal are stacked orderly.

6. The method for chemical bar planting in building construction engineering according to claim 5, wherein in the step (5), mechanical stirring is adopted during anchor glue preparation, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 10-15 steel bars at the end of a drill bit of the electric hammer; or manually stirring with a thin steel bar.

7. The method for chemical bar planting in house building engineering according to claim 6, wherein in the step (6), for horizontal drilling, the bar planting is carried out by tamping the glue into the hole by using thin steel bars with the diameter of 6-8 to match with a clean glue supporting plate, or the prepared anchoring glue is agglomerated and plugged into the drilled hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

8. The method for chemical bar-planting in building construction according to claim 7, wherein in the step (7), protection work is performed on the inserted steel bars to prevent the steel bars from being swayed or collided during the curing process of the anchor glue; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 2 to 4 days, and the anchoring force continues to increase along with the time.

Technical Field

The invention relates to the technical field of construction of house construction engineering, in particular to a chemical bar planting method in the house construction engineering.

Background

In the building construction engineering construction process, most of the beams, plates, columns and the like of the building construction engineering are basically frame structures, and in the construction process of the beams, the plates and the columns, tie bars need to be reserved for later-stage constructional columns or masonry. However, in the process of embedding the tie bars, holes are often required to be opened on the templates of the beams, the plates and the columns for embedding, steel molds or wood molds are damaged, and a plurality of quality problems can be caused due to improper operation, for example, the mold is difficult to remove after the tie bars are embedded; the embedded position is inaccurate, and secondary reworking influences the construction progress; when embedding, the accuracy is high, the later-stage masonry height needs to be considered in detail, and the embedded position needs to be positioned; especially, the accuracy of the pre-embedding position is difficult to control, which belongs to the common quality problem of pre-embedding of the tie bars in the building construction. At present, a better positioning mode is lacked in a mode of pre-embedding tie bars in a building construction project.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a chemical bar planting method in building construction. The method of the invention adopts high-strength rapid anchoring bar glue for rapid bar planting. The invention can be used for the construction of the upper end part and the lower end part of a constructional column in house construction, the connection of a lintel and a frame column, the connection of a wall body and a frame column as well as a shear wall and other parts, and avoids the damage of a template caused by the embedded steel bars when the frame column and a beam plate are constructed; inaccurate positions of the embedded steel bars are avoided; construction progress of frame columns, beam plates and the like is effectively accelerated; the accuracy of the bar planting position is effectively solved, and the construction progress and the construction quality are improved.

In order to achieve the aim, the invention provides a chemical bar planting method in a building construction project, which comprises the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d + (4-10 mm), the depth of the drilled hole is 12d-15d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 3-5 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 50-65 parts of cement, 50-60 parts of silica fume, 15-20 parts of machine-made sand, 15-20 parts of bisphenol F diglycidyl ether, 12-14 parts of melamine cyanurate, 10-12 parts of methyl ethyl ketone, 7-8 parts of bulk polymerization sodium butadiene rubber, 10-12 parts of coupling agent, 10-15 parts of fumed silica, 10-15 parts of vinyl triamine, 10-12 parts of nano anti-settling material, 8-10 parts of acrylic copolymer, 1-2 parts of sodium lignosulfonate, 0.5-1 part of tartaric acid and 0.5-1 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 5-25 ℃, and the steel bars cannot be disturbed within 12-24 hours after the steel bars are planted;

(8) checking; and 3-4 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to the sampling rate of 1-2 per mill, and making a drawing test record.

Preferably, in the step (1), if the stressed steel bar exists at the position of the chemical bar planting, the drilling position can be properly adjusted and positioned at the inner side of the stirrup or the inner side of the distribution bar; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

In any of the above solutions, it is preferable that in the step (2), the hole is drilled by using an electric hammer.

In any of the above embodiments, it is preferable that in the step (3), the holes of the drilled holes are kept dry, and if there are waste holes, the holes are cleaned and then filled with an anchor adhesive.

In any of the above schemes, preferably, in the step (4), an angle grinder and a steel wire wheel sheet are adopted to perform steel rust removal, and the rust removal length is greater than the anchoring length of 5-8 cm; and the steel bars after rust removal are stacked orderly.

In any of the above schemes, preferably, in the step (5), mechanical stirring is adopted during preparation of the anchoring adhesive, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 10-15 steel bars at the end part of a drill bit of the electric hammer; or manually stirring with a steel bar.

In any of the above schemes, preferably, in the step (6), for the horizontal drilling, glue is pounded into the hole by matching a phi 6-phi 8 thin steel bar with a clean glue supporting plate during the bar planting, or prepared anchoring glue is agglomerated and is stuffed into the added and pounded drilling hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

In any of the above solutions, preferably, in the step (7), protection work is performed on the inserted steel bars to prevent the steel bars from being swayed or collided during the curing process of the anchor glue; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 2 to 4 days, and the anchoring force continues to increase along with the time.

The invention has the beneficial effects that:

1. the invention can be used for the construction of the upper end part and the lower end part of a constructional column in house construction, the connection of a lintel and a frame column, the connection of a wall body and a frame column as well as a shear wall and other parts, and avoids the damage of a template caused by the embedded steel bars when the frame column and a beam plate are constructed; inaccurate positions of the embedded steel bars are avoided; construction progress of frame columns, beam plates and the like is effectively accelerated; the accuracy of the bar planting position is effectively solved, and the construction progress and the construction quality are improved.

2. The invention solves the common problems of the embedded steel bars, really improves the accuracy of the position of the tie bar and the construction quality and realizes the internal and external beauty.

3. The anchor adhesive provided by the invention is fast-setting, the splitting tensile strength after curing reaches 12-15MPa, the breaking strength reaches 58-60MPa, the basic performance completely meets the related requirements of GB 50728-.

Detailed Description

The technical solutions of the present application will be described in detail below with reference to specific embodiments of the present application, but the following examples are only for the understanding of the present invention, and the examples and features of the examples in the present application can be combined with each other, and the present application can be implemented in various different ways as defined and covered by the claims.

Example 1

A chemical bar planting method in building construction engineering, comprising the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d +4mm, the drilling depth is 15d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 5 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 50 parts of cement, 60 parts of silica fume, 15 parts of machine-made sand, 20 parts of bisphenol F diglycidyl ether, 12 parts of melamine, 12 parts of methyl ethyl ketone, 7 parts of bulk polymerization sodium butyl rubber, 12 parts of coupling agent, 10 parts of fumed silica, 15 parts of vinyl triamine, 10 parts of nano anti-settling material, 10 parts of acrylic copolymer, 1 part of sodium lignosulfonate, 1 part of tartaric acid and 0.5 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 25 ℃, and the steel bars cannot be disturbed within 12 hours after the steel bars are planted;

(8) checking; and 4 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to a sampling rate of 1 per mill, and making a drawing test record.

In the step (1), if the stressed steel bars exist at the positions of the chemical steel bar planting, the drilling positions can be properly adjusted and positioned at the inner sides of the stirrups or the inner sides of the distributed bars; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

In the step (2), the hole is drilled by an electric hammer.

In the step (3), the drilled holes are kept dry, and if waste holes exist, the drilled holes are cleaned and filled with anchor glue.

In the step (4), steel rust removal is carried out by adopting an angle grinder and a steel wire wheel sheet, wherein the rust removal length is greater than the anchoring length of 8 cm; and the steel bars after rust removal are stacked orderly.

In the step (5), mechanical stirring is adopted during preparation of the anchoring adhesive, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 10 steel bars at the end part of a drill bit of the electric hammer; or manually stirring with a steel bar.

In the step (6), for horizontal drilling, glue is pounded into the hole by matching a phi 8 thin steel bar with a clean glue supporting plate during bar planting, or prepared anchoring glue is agglomerated and is stuffed into the pounded drilling hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

In the step (7), protection work is carried out on the inserted reinforcing steel bars to prevent the reinforcing steel bars from being swayed or collided in the curing process of the anchoring adhesive; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 2 days, and the anchoring force continues to increase along with the time.

Example 2

A chemical bar planting method in building construction engineering, comprising the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d +10mm, the drilling depth is 12d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 3 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 65 parts of cement, 50 parts of micro silicon powder, 20 parts of machine-made sand, 15 parts of bisphenol F diglycidyl ether, 14 parts of melamine, 10 parts of methyl ethyl ketone, 8 parts of bulk polymerization sodium butyl rubber, 10 parts of coupling agent, 15 parts of fumed silica, 10 parts of vinyl triamine, 12 parts of nano anti-settling material, 8 parts of acrylic copolymer, 2 parts of sodium lignosulfonate, 0.5 part of tartaric acid and 1 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 5 ℃, and the reinforcing steel bars cannot be disturbed within 24 hours after the reinforcing steel bars are planted;

(8) checking; and 3 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to the sampling rate of 2 per mill, and making a drawing test record.

In the step (1), if the stressed steel bars exist at the positions of the chemical steel bar planting, the drilling positions can be properly adjusted and positioned at the inner sides of the stirrups or the inner sides of the distributed bars; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

In the step (2), the hole is drilled by an electric hammer.

In the step (3), the drilled holes are kept dry, and if waste holes exist, the drilled holes are cleaned and filled with anchor glue.

In the step (4), steel rust removal is carried out by adopting an angle grinder and a steel wire wheel sheet, wherein the rust removal length is greater than the anchoring length of 5 cm; and the steel bars after rust removal are stacked orderly.

In the step (5), mechanical stirring is adopted during preparation of the anchoring adhesive, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 15 steel bars at the end part of a drill bit of the electric hammer; or manually stirring with a steel bar.

In the step (6), for horizontal drilling, glue is pounded into the hole by matching a phi 6 thin steel bar with a clean glue supporting plate during bar planting, or prepared anchoring glue is agglomerated and is stuffed into the pounded drilling hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

In the step (7), protection work is carried out on the inserted reinforcing steel bars to prevent the reinforcing steel bars from being swayed or collided in the curing process of the anchoring adhesive; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 4 days, and the anchoring force continues to increase along with the time.

Example 3

A chemical bar planting method in building construction engineering, comprising the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d +7mm, the drilling depth is 13d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 4 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 60 parts of cement, 55 parts of silica fume, 18 parts of machine-made sand, 17 parts of bisphenol F diglycidyl ether, 13 parts of melamine, 11 parts of methyl ethyl ketone, 7.5 parts of bulk polymerization sodium butadiene rubber, 11 parts of coupling agent, 13 parts of fumed silica, 12 parts of vinyl triamine, 11 parts of nano anti-settling material, 9 parts of acrylic copolymer, 1.5 parts of sodium lignosulfonate, 0.7 part of tartaric acid and 0.9 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 15 ℃, and the reinforcing steel bars cannot be disturbed within 18 hours after the reinforcing steel bars are planted;

(8) checking; and 3.5 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to the sampling rate of 1.5 per mill, and making a drawing test record.

In the step (1), if the stressed steel bars exist at the positions of the chemical steel bar planting, the drilling positions can be properly adjusted and positioned at the inner sides of the stirrups or the inner sides of the distributed bars; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

In the step (2), the hole is drilled by an electric hammer.

In the step (3), the drilled holes are kept dry, and if waste holes exist, the drilled holes are cleaned and filled with anchor glue.

In the step (4), steel rust removal is carried out by adopting an angle grinder and a steel wire wheel sheet, wherein the rust removal length is greater than the anchoring length of 7 cm; and the steel bars after rust removal are stacked orderly.

In the step (5), mechanical stirring is adopted during preparation of the anchoring adhesive, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 14 steel bars at the end part of a drill bit of the electric hammer; or manually stirring with a steel bar. Mixing the clean container and the weighing apparatus according to the mixing proportion, and stirring for about 5-10 minutes until the mixture is uniform. Stirring along the same direction during stirring, and avoiding mixing air to form bubbles as much as possible. The anchoring adhesive should be used as it is, and the amount of adhesive should not be more than 5 kg each time.

In the step (6), for horizontal drilling, glue is pounded into the hole by matching a phi 7 thin steel bar with a clean glue supporting plate during bar planting, or prepared anchoring glue is agglomerated and is stuffed into the pounded drilling hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

In the step (7), protection work is carried out on the inserted reinforcing steel bars to prevent the reinforcing steel bars from being swayed or collided in the curing process of the anchoring adhesive; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 3 days, and the anchoring force continues to increase along with the time.

Example 4

A chemical bar planting method in building construction engineering, comprising the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d + (4-10 mm), the depth of the drilled hole is 12d-15d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 3-5 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 50-65 parts of cement, 50-60 parts of silica fume, 15-20 parts of machine-made sand, 15-20 parts of bisphenol F diglycidyl ether, 12-14 parts of melamine cyanurate, 10-12 parts of methyl ethyl ketone, 7-8 parts of bulk polymerization sodium butadiene rubber, 10-12 parts of coupling agent, 10-15 parts of fumed silica, 10-15 parts of vinyl triamine, 10-12 parts of nano anti-settling material, 8-10 parts of acrylic copolymer, 1-2 parts of sodium lignosulfonate, 0.5-1 part of tartaric acid and 0.5-1 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 5-25 ℃, and the steel bars cannot be disturbed within 12-24 hours after the steel bars are planted;

(8) checking; and 3-4 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to the sampling rate of 1-2 per mill, and making a drawing test record.

In the step (1), if the stressed steel bars exist at the positions of the chemical steel bar planting, the drilling positions can be properly adjusted and positioned at the inner sides of the stirrups or the inner sides of the distributed bars; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

In the step (2), the hole is drilled by an electric hammer.

In the step (3), the drilled holes are kept dry, and if waste holes exist, the drilled holes are cleaned and filled with anchor glue.

In the step (4), steel rust removal is carried out by adopting an angle grinder and a steel wire wheel sheet, wherein the rust removal length is greater than the anchoring length by 5-8 cm; and the steel bars after rust removal are stacked orderly.

In the step (5), mechanical stirring is adopted during preparation of the anchoring adhesive, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 10-15 steel bars at the end part of a drill bit of the electric hammer; or manually stirring with a steel bar.

In the step (6), for horizontal drilling, glue is pounded into the hole by matching thin steel bars with phi 6-phi 8 with a clean glue supporting plate during bar planting, or prepared anchoring glue is agglomerated and is stuffed into the pounded drilling hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

In the step (7), protection work is carried out on the inserted reinforcing steel bars to prevent the reinforcing steel bars from being swayed or collided in the curing process of the anchoring adhesive; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 2 to 4 days, and the anchoring force continues to increase along with the time.

In order to further improve the technical effect of the invention, in the embodiment, the measurement must be accurate when the anchor adhesive is prepared, otherwise the setting time of the anchor adhesive is not easy to control, and even the adhesive shrinks after setting and curing, so that the bonding strength is reduced; the anchoring adhesive is placed into the hole immediately after being prepared. When the reinforcing steel bar is inserted, the reinforcing steel bar is required to be rotated in one direction, and the reinforcing steel bar is required to be inserted while being rotated, so that the anchoring adhesive is fully bonded with the reinforcing steel bar. The adhesive strength of the adhesive and the reinforcing steel bar as well as the adhesive and the concrete are tested before construction, and construction can be performed after the design and specification requirements are met. Before drilling, the position of the steel bar in the original structure is measured, so that the steel bar in the original structure is prevented from being damaged during drilling.

The preparation method of the anchoring adhesive comprises the following steps:

A. fully mixing and stirring the cement, the micro silicon powder, the machine-made sand, the acrylic copolymer, the sodium lignosulfonate, the tartaric acid and the defoaming agent in parts by weight uniformly for later use;

B. fully mixing and stirring the other components in parts by weight uniformly for later use;

and B, fully mixing and uniformly stirring the products in the step A and the step B to obtain the anchoring adhesive.

The preparation method fully improves the strength of the anchoring adhesive bonding steel bar under the condition of constrained drawing, improves the ductility of the material, has good weather resistance and aging resistance, and improves the deformation resistance; can carry out the construction of anchor glue laborsavingly fast, guarantee the plumpness, improve the construction effect.

Example 5

A chemical bar planting method in building construction engineering, comprising the following steps:

(1) positioning; marking the position and the type of the drilled hole for planting the steel bar according to design requirements, setting an operation platform, and well performing safety protection work;

(2) drilling; adjusting hole positions to avoid the original structural steel bars during drilling, wherein the diameter of the drilled hole is d + (4-10 mm), the depth of the drilled hole is 12d-15d, and d is the diameter of the steel bars for chemical bar planting;

(3) cleaning holes; after drilling, checking the depth and the aperture of the hole, blowing out dust in the hole by using compressed air after the hole is qualified, brushing the hole wall by using a brush and cotton cloth, blowing the hole by using the compressed air again, repeating the steps for 3-5 times until no dust chips exist in the hole, and temporarily sealing the hole opening;

(4) derusting steel; removing rust or oil stains within the anchoring length range of the steel, and polishing to obtain metallic luster;

(5) preparing an anchoring adhesive; the anchoring adhesive comprises the following components in parts by weight: 50-65 parts of cement, 50-60 parts of silica fume, 15-20 parts of machine-made sand, 15-20 parts of bisphenol F diglycidyl ether, 12-14 parts of melamine cyanurate, 10-12 parts of methyl ethyl ketone, 7-8 parts of bulk polymerization sodium butadiene rubber, 10-12 parts of coupling agent, 10-15 parts of fumed silica, 10-15 parts of vinyl triamine, 10-12 parts of nano anti-settling material, 8-10 parts of acrylic copolymer, 1-2 parts of sodium lignosulfonate, 0.5-1 part of tartaric acid and 0.5-1 part of defoaming agent;

(6) planting bars; firstly, tamping an anchoring adhesive into a drill hole, and then inserting a reinforcing steel bar into the drill hole; for vertical drilling, when the steel bars are planted, the anchoring glue directly flows into the holes in a tamping mode; for horizontal drilling, holes are drilled in a mode of ramming glue into the holes when the ribs are planted; for the inverted vertical drilling hole, the anchoring glue is inserted into the hole in a mode of being stuffed and being added when the ribs are planted;

(7) curing and protecting; the curing temperature of the anchoring adhesive is kept at 5-25 ℃, and the steel bars cannot be disturbed within 12-24 hours after the steel bars are planted;

(8) checking; and 3-4 days after the bar planting work is finished, checking and accepting the quality of the bar planting, randomly performing a drawing test on the bar planting according to the sampling rate of 1-2 per mill, and making a drawing test record.

In the step (1), if the stressed steel bars exist at the positions of the chemical steel bar planting, the drilling positions can be properly adjusted and positioned at the inner sides of the stirrups or the inner sides of the distributed bars; and (4) erecting steel pipe type scaffolds when the height of the drilled holes or the inserted bars exceeds 1.4 meters.

In the step (2), the hole is drilled by an electric hammer.

In the step (3), the drilled holes are kept dry, and if waste holes exist, the drilled holes are cleaned and filled with anchor glue.

In the step (4), steel rust removal is carried out by adopting an angle grinder and a steel wire wheel sheet, wherein the rust removal length is greater than the anchoring length by 5-8 cm; and the steel bars after rust removal are stacked orderly.

In the step (5), mechanical stirring is adopted during preparation of the anchoring adhesive, the stirrer consists of an electric hammer and stirring teeth, and the stirring teeth are made by welding crossed phi 10-15 steel bars at the end part of a drill bit of the electric hammer; or manually stirring with a steel bar.

In the step (6), for horizontal drilling, glue is pounded into the hole by matching thin steel bars with phi 6-phi 8 with a clean glue supporting plate during bar planting, or prepared anchoring glue is agglomerated and is stuffed into the pounded drilling hole; the reinforcing steel bar can be inserted into the drill hole in a rotating or hand hammer beating mode, and the filling amount of the anchoring adhesive is required to ensure that a little adhesive overflows from the periphery after the reinforcing steel bar is inserted.

In the step (7), protection work is carried out on the inserted reinforcing steel bars to prevent the reinforcing steel bars from being swayed or collided in the curing process of the anchoring adhesive; if the swing or the collision is larger, the steel bars are needed to be replanted; the anchoring adhesive can bear the design load after being cured for 2 to 4 days, and the anchoring force continues to increase along with the time.

In order to further improve the technical effect of the invention, in this embodiment, the nano anti-settling material comprises the following components in parts by weight: 40-45 parts of nano bentonite, 15-20 parts of nano zinc oxide, 15-18 parts of nano carbon silicide, 15-18 parts of coupling agent, 8-10 parts of nano titanium dioxide, 8-10 parts of stearamide, 5-8 parts of hydroxymethyl, 1-2 parts of sodium silicate,

The nano anti-settling material provided by the invention is reasonable in formula and can effectively prevent the settling of the anchoring adhesive; the preparation method is simple and quick, and is suitable for industrial production.

The nano bentonite is prepared by the following method:

(1) adding 5-8 times of purified water by weight of natural bentonite, stirring at high speed for 2-3h, standing for 3-5h, removing impurities, then adding 5-8% of stearic acid monoglyceride by weight of natural bentonite, stirring at high speed for 2-3h, standing for 6-8h, drying, grinding, and sieving with 500-mesh and 800-mesh sieve to obtain the product.

(2) Adding 5-8 times of purified water by weight of the product in the step (1), adding 10-12% of Glan Hamames salt by weight of the product in the step (1), reacting for 2-3h at 55-60 ℃, and stirring at high speed for 15-30 min; after drying, grinding, and sieving with a sieve of 500-800 meshes to obtain the product.

(3) Adding purified water 12-15 times the weight of the product in the step (2), adding cetrimide 10-12% of the weight of the product in the step (2), reacting at 45-50 ℃ for 2-3h, and stirring at high speed for 15-30 min; filtering, drying, grinding, and sieving with 1100-1200 mesh sieve to obtain nanometer bentonite.

The nano bentonite has good heat resistance, good compatibility, good dispersibility and easy processing, is more beneficial to maintaining mechanical property, can improve the mechanical property of materials mixed with the nano bentonite, and can reduce the cost.

In addition, in order to ensure the technical effect of the invention, the technical schemes of the above embodiments can be reasonably combined.

According to the embodiment, the construction method can be used for the construction of the upper end part and the lower end part of the constructional column in the house construction, the connection of the lintel and the frame column, the connection of the wall body and the frame column as well as the shear wall and other parts, and avoids the damage to the template caused by the embedded steel bars when the frame column and the beam slab are constructed; inaccurate positions of the embedded steel bars are avoided; construction progress of frame columns, beam plates and the like is effectively accelerated; the accuracy of the bar planting position is effectively solved, and the construction progress and the construction quality are improved.

The invention solves the common problems of the embedded steel bars, really improves the accuracy of the position of the tie bar and the construction quality and realizes the internal and external beauty.

The anchor adhesive provided by the invention is fast-setting, the splitting tensile strength after curing reaches 12-15MPa, the breaking strength reaches 58-60MPa, the basic performance completely meets the related requirements of GB 50728-.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.