阅读说明：本技术 一种建筑工程地下室防水施工方法 (Waterproof construction method for basement of building engineering ) 是由 黄建忠 陈绍伟 袁斌斌 程智龙 张维文 于 2019-08-12 设计创作，主要内容包括：本发明公开了一种建筑工程地下室防水施工方法,包括以下步骤：S1：清理基层表面的灰尘、杂物、油渍和明水,使其表面平整、干净；S2：在基层上放出卷材铺贴的控制线,以准确控制卷材铺贴位置及搭接宽度,避免在卷材铺设过程中出现错位、歪斜等现象；S3：在基础处理和弹线定位做好的基础上,对阴阳角进行1:2.5防水砂浆的施工,阴阳角应作为圆角,阴阳角R≥50圆弧形。本发明通过设置的PV100防水卷材加强了内层钢筋混凝土的防水性能,且PV100防水卷材能够和浇注的混凝土形成连续永久的满粘结合,有效防止窜水问题,与结构紧密粘接,不受基底不均匀沉降的影响,不需要做保护层,可直接进行下道工序施工。(The invention discloses a waterproof construction method for a basement of a building engineering, which comprises the following steps: s1: cleaning dust, impurities, oil stains and open water on the surface of the base layer to ensure that the surface of the base layer is smooth and clean; s2: a control line for laying the coiled materials is discharged on the base layer so as to accurately control the laying position and the lap joint width of the coiled materials and avoid the phenomena of dislocation, deflection and the like in the laying process of the coiled materials; s3: on the basis of well-finished foundation treatment and elastic line positioning, construction of 1:2.5 waterproof mortar is carried out on the internal and external corners, the internal and external corners are used as rounded corners, and the R of the internal and external corners is more than or equal to 50 circular arcs. The waterproof performance of the inner layer reinforced concrete is enhanced through the PV100 waterproof coiled material, the PV100 waterproof coiled material can form continuous and permanent full-adhesive combination with the poured concrete, the water channeling problem is effectively prevented, the waterproof material is tightly adhered to the structure, the influence of uneven settlement of the substrate is avoided, a protective layer is not required, and the next procedure construction can be directly carried out.)

1. A waterproof construction method for a basement of a building engineering is characterized by comprising the following steps:

s1: cleaning dust, impurities, oil stains and open water on the surface of the base layer to ensure that the surface of the base layer is smooth and clean;

s2: a control line for laying the coiled materials is discharged on the base layer so as to accurately control the laying position and the lap joint width of the coiled materials and avoid the phenomena of dislocation, deflection and the like in the laying process of the coiled materials;

s3: on the basis of well foundation treatment and elastic line positioning, construction of 1:2.5 waterproof mortar is carried out on the internal and external corners, the internal and external corners are used as fillets, and the R of the internal and external corners is more than or equal to 50 circular arcs;

s4: coating the base layer with the base layer treating agent, wherein the base layer treating agent is required to be uniform when coated, a white part is not required to be exposed, repeated coating is not required, and the next procedure can be carried out after drying for more than 4 hours until the foot is not adhered;

s5: after the base layer treating agent is dried, the SBS polyester felt matrix modified asphalt coiled material is spread and adhered at the internal and external corners by hot melting to be used as a waterproof additional layer, and the width of both sides of the center of the internal and external corners is 250mm, as shown in figure 1;

s6: rolling the coiled materials forwards to be paved and compacted by a compression roller, wherein air and foreign matters are not involved during rolling, and an obvious hollowing phenomenon is not allowed to exist, the lapping width is transverse lapping, the longitudinal lapping is not less than 100mm, the blank pressing width of each layer of coiled materials is not less than 100mm, the width of a joint is not less than 100mm, the blank pressing of upper and lower coiled materials are mutually spaced by 1/3 breadth, namely 30-50 cm, and the joint of the upper and lower coiled materials is mutually spaced by one third breadth, namely 30-50 cm;

s7: at the joint corner of the waterproof layer of the bottom plate waterproof coiled material PV100 and the waterproof layer of the vertical side wall SBS polyester felt matrix modified asphalt coiled material, a layer of 500mm wide single-sided self-adhesive SAM-930 self-adhesive polymer modified asphalt waterproof coiled material with the thickness of 3mm needs to be added, the single-sided self-adhesive SAM-930 self-adhesive polymer modified asphalt waterproof coiled material can be bonded with the waterproof coiled material PV100 after being slightly baked and heated, and the other side of the single-sided self-adhesive SAM-930 self-adhesive polymer modified asphalt waterproof coiled material can be bonded with;

s8: laying a water swelling and water stopping rubber strip on the surface of the reinforced concrete pile, laying a waterproof coiled material on the surface of the bottom plate, and sealing the joint of the waterproof coiled material and the water swelling and water stopping rubber strip by using a sealing paste, as shown in fig. 3;

s9: chiseling the concrete on two sides of the post-cast strip into a tongue-and-groove of 100mm multiplied by 50mm, and simultaneously chiseling the concrete on two sides; when the bottom plate mold and the beam bottom mold are disassembled at two sides of the post-cast strip, firstly, the two side plate beams of the post-cast strip are supported, a waterproof additional layer is added on the upper part of a concrete cushion layer of a foundation trench of the post-cast strip, the surface of the foundation trench of the post-cast strip is required to be lower than the bottom surface of the bottom plate by more than 250mm, the slopes at two sides are not more than 45 degrees, the widths of the upper parts are respectively more than 150mm of the width of the post-cast strip, the lower part of the post-cast strip of the bottom plate is required to be provided with the waterproof additional layer, and the widths of the two sides;

s10: before the horizontal construction joint is used for pouring concrete, the surface laitance and impurities of the horizontal construction joint are removed, then the neat paste is paved or the materials such as a concrete interface treating agent, a cement-based permeable crystallization type waterproof coating and the like are coated, and then the concrete is paved into a concrete slab with the thickness of 30-50mm and the thickness of 1: 1, cement mortar is poured, and concrete is poured in time; before concrete is poured into the vertical construction joint, the surface of the vertical construction joint is cleaned, then a concrete interface treating agent or a cement-based permeable crystallization type waterproof coating is coated, and the concrete is poured in time;

s11: for the pipeline part penetrating through the structure, the coiled material is laid to the root part of the pipeline, and then sealing treatment is carried out by adopting sealing paste;

s12: constructing waterproof reinforcing layers in the height ranges of 150mm above and below the construction joints of the guide wall, and adding one waterproof reinforcing layer along the construction joints of the guide wall; adding a waterproof additional layer to the round corner part of the root of the guide wall, extending to the horizontal plane of the bottom plate for 20cm outwards, and turning up the guide wall for 60 cm;

s13: the bearing platform steel bar double-layer bidirectional support is arranged on the cushion block to prevent water from seeping upwards along the steel bar; pouring concrete at the post-pouring belt 45 days later than concrete at two corresponding sides, wherein the concrete is micro-expansion concrete with a higher grade than the concrete at the two sides and is internally doped with anti-crack fibers; the post-cast strip is maintained for at least three weeks in a moistening mode, the shoring steel pipes are not detached before the post-cast strip of the top plate is constructed, and the formwork is detached after the concrete strength reaches 28 days; and after the concrete of the outer wall post-cast strip is fully dried, a waterproof reinforcing layer and a waterproof layer are manufactured, the width of the waterproof reinforcing layer exceeds the two sides of the post-cast strip by 25cm respectively, and then the outer wall post-cast strip is painted with a thickness of 20mm, namely 1:2.5 waterproof mortar, and finally building a brick wall with the thickness of 240mm for protection;

s14: the inner side water stop belt of the water stop frame is a rib-free spherical water stop belt, the thickness of the rib-free spherical water stop belt is 30mm, the width of the rib-free spherical water stop belt is 350mm, the diameter of a sphere is 60mm, the water stop belt and a steel cover plate are perforated by a perforating machine according to the distance between bolts, the steel cover plate is subjected to hot galvanizing treatment, the diameter of the steel cover plate is controlled to be 16.5mm, the diameter of the water stop belt is controlled to be 15mm so as to ensure the tight combination with the bolts, meanwhile, a rubber gasket is additionally arranged between a nut and the steel cover plate.

S15: the concrete at the water stop frame part adopts fine stone concrete with the same strength, is vibrated by a vibrating spear with the diameter of 30mm, and is strictly operated according to the requirements of operation regulations; when the reinforcing steel bars are bound, the thickness of a reinforcing steel bar protective layer is ensured, particularly the thickness of an outer protective layer is not less than 30mm, so that a seepage channel is prevented from being generated through the side wall of the reinforcing steel bar; if the concrete is not compacted and the water-stopping frame is empty, the hole which can be filled is formed by chiseling immediately, and the plugging agent is added into the waterproof fine stone concrete for plugging.

2. The waterproof construction method for the basement of the construction engineering according to claim 1, wherein template positioning steel bars are arranged on the outer side of the battens for reinforcement when the erecting templates are poured for the first time in the step S3, and the reinforcing steel bars are arranged one by one at intervals of 1 meter as shown in fig. 2; and no reinforcing steel bar is needed to be arranged when the formwork is erected in the second pouring.

3. The waterproof construction method for the basement in the building engineering according to claim 1, wherein if the base layer in the step S1 leaks, plugging and drainage treatment should be performed in advance to avoid affecting the construction of the waterproof layer, and if the flatness of the base layer does not meet the requirement, the method comprises the following steps of 1:2.5 filling and leveling cement mortar, if there are sharp objects of the reinforcing bar head and the bolt lamp protruding out of the surface of the base layer, cutting off and leveling.

4. The waterproof construction method for the basement in the building engineering as claimed in claim 1, wherein in the step S6, before the roll material is laid in a large area, trial laying is performed, and when the first PV100 polymer self-adhesive film pre-laid roll material is laid, the roll material is positioned and laid on the base surface in a blank manner according to an elastic reference line, and the smooth surface of the roll material faces the base layer, so that the position of the roll material is carefully corrected. Long limit overlap joint width 70mm tears the barrier paper that the coiled material reserved self-adhesion overlap joint during the overlap joint operation earlier, and self-adhesion overlap joint limit should keep clean, dry, no dust, when carrying out the overlap joint bonding operation, air in the overlap joint limit of discharging on one side glues the jail with the compression roller compaction on one side, and the minor face overlap joint adopts the hot-blast rifle to shovel off coiled material surface particle, adopts supporting special double-sided tape to paste and the compaction glues the jail, and overlap joint width 80 mm.

5. The waterproofing construction method for basement in construction engineering according to claim 1 wherein, when the waterproofing roll is applied to the large plane in step S6, nails are mechanically fastened to the overlapping edge part every 3-5 m during the application process to prevent extreme situations, and the nail holes are covered by the lower secondary roll.

6. The waterproof construction method for the basement of the construction engineering according to claim 1, wherein in the step S9, the two sides of the post-cast strip, the bottom plate concrete and the reinforcing steel bars in the post-cast strip need to be cleaned up and wetted for 24 hours before casting; when pouring, no sundries or water need to be left.

7. The waterproof construction method for the basement in the building engineering according to claim 1, wherein in the step S6, the large-area coiled material is laid according to a far-end-to-near laying method so as to ensure that the constructor does not excessively tread the finished waterproof layer of the coiled material, and the next procedure of construction can be performed on the laid waterproof layer of the coiled material by laying a temporary protection layer on the waterproof layer.

Technical Field

The invention relates to a waterproof construction method, in particular to a waterproof construction method for a basement of building engineering.

Technical Field

Along with the development of cities, basements are widely applied, for example, two underground layers are frequently used as parking lots in commercial cities and residential areas, and because the basements are positioned below the ground and the top surface, the side surfaces and the bottom surface are all positioned in a water environment, the construction method is not emphasized, water leakage of the basements is easily caused, and the use is influenced;

at present, a basement waterproof construction method generally comprises the steps of arranging a concrete cushion layer and cement mortar on a plain soil layer, then pasting an asphalt waterproof coiled material, then arranging a concrete protective layer, finally pouring a waterproof reinforced concrete bottom plate and a building surface layer, and performing double waterproofing through the asphalt waterproof coiled material and the waterproof reinforced concrete bottom plate, wherein the concrete cushion layer is easy to permeate water, so that the asphalt waterproof coiled material is in contact with water for a long time, the viscosity is easy to reduce or the waterproof performance is poor, and the waterproof reinforced concrete is easy to reduce

Cracks are easily caused by the shrinkage of concrete in the pouring process, or water seepage is caused by construction joints which appear due to different pouring time.

Disclosure of Invention

The invention aims to provide a waterproof construction method for a basement in building engineering, which has the characteristics of enhancing the waterproof performance of inner-layer reinforced concrete, effectively preventing the problem of water channeling and effectively reducing and avoiding the generation of later cracks.

In order to achieve the purpose, the invention provides the following technical scheme: a waterproof construction method for a basement of a building engineering comprises the following steps:

s1: cleaning dust, impurities, oil stains and open water on the surface of the base layer to ensure that the surface of the base layer is smooth and clean;

s2: a control line for laying the coiled materials is discharged on the base layer so as to accurately control the laying position and the lap joint width of the coiled materials and avoid the phenomena of dislocation, deflection and the like in the laying process of the coiled materials;

s3: on the basis of well foundation treatment and elastic line positioning, construction of 1:2.5 waterproof mortar is carried out on the internal and external corners, the internal and external corners are used as fillets, and the R of the internal and external corners is more than or equal to 50 circular arcs;

s4: coating the base layer with the base layer treating agent, wherein the base layer treating agent is required to be uniform when coated, a white part is not required to be exposed, repeated coating is not required, and the next procedure can be carried out after drying for more than 4 hours until the foot is not adhered;

s5: after the base layer treating agent is dried, the SBS polyester felt matrix modified asphalt coiled material is spread and adhered at the internal and external corners by hot melting to be used as a waterproof additional layer, and the width of both sides of the center of the internal and external corners is 250mm, as shown in figure 1;

s6: rolling the coiled materials forwards to be paved and compacted by a compression roller, wherein air and foreign matters are not involved during rolling, and an obvious hollowing phenomenon is not allowed to exist, the lapping width is transverse lapping, the longitudinal lapping is not less than 100mm, the blank pressing width of each layer of coiled materials is not less than 100mm, the width of a joint is not less than 100mm, the blank pressing of upper and lower coiled materials are mutually spaced by 1/3 breadth, namely 30-50 cm, and the joint of the upper and lower coiled materials is mutually spaced by one third breadth, namely 30-50 cm;

s7: at the joint corner of the waterproof layer of the bottom plate waterproof coiled material PV100 and the waterproof layer of the vertical side wall SBS polyester felt matrix modified asphalt coiled material, a layer of 500mm wide single-sided self-adhesive SAM-930 self-adhesive polymer modified asphalt waterproof coiled material with the thickness of 3mm needs to be added, the single-sided self-adhesive SAM-930 self-adhesive polymer modified asphalt waterproof coiled material can be bonded with the waterproof coiled material PV100 after being slightly baked and heated, and the other side of the single-sided self-adhesive SAM-930 self-adhesive polymer modified asphalt waterproof coiled material can be bonded with;

s8: laying a water swelling and water stopping rubber strip on the surface of the reinforced concrete pile, laying a waterproof coiled material on the surface of the bottom plate, and sealing the joint of the waterproof coiled material and the water swelling and water stopping rubber strip by using a sealing paste, as shown in fig. 3;

s9: chiseling the concrete on two sides of the post-cast strip into a tongue-and-groove of 100mm multiplied by 50mm, and simultaneously chiseling the concrete on two sides; when the bottom plate mold and the beam bottom mold are disassembled at two sides of the post-cast strip, firstly, the two side plate beams of the post-cast strip are supported, a waterproof additional layer is added on the upper part of a concrete cushion layer of a foundation trench of the post-cast strip, the surface of the foundation trench of the post-cast strip is required to be lower than the bottom surface of the bottom plate by more than 250mm, the slopes at two sides are not more than 45 degrees, the widths of the upper parts are respectively more than 150mm of the width of the post-cast strip, the lower part of the post-cast strip of the bottom plate is required to be provided with the waterproof additional layer, and the widths of the two sides;

s10: before the horizontal construction joint is used for pouring concrete, the surface laitance and impurities of the horizontal construction joint are removed, then the neat paste is paved or the materials such as a concrete interface treating agent, a cement-based permeable crystallization type waterproof coating and the like are coated, and then the concrete is paved into a concrete slab with the thickness of 30-50mm and the thickness of 1: 1, cement mortar is poured, and concrete is poured in time; before concrete is poured into the vertical construction joint, the surface of the vertical construction joint is cleaned, then a concrete interface treating agent or a cement-based permeable crystallization type waterproof coating is coated, and the concrete is poured in time;

s11: for the pipeline part penetrating through the structure, the coiled material is laid to the root part of the pipeline, and then sealing treatment is carried out by adopting sealing paste;

s12: constructing waterproof reinforcing layers in the height ranges of 150mm above and below the construction joints of the guide wall, and adding one waterproof reinforcing layer along the construction joints of the guide wall; adding a waterproof additional layer to the round corner part of the root of the guide wall, extending to the horizontal plane of the bottom plate for 20cm outwards, and turning up the guide wall for 60 cm;

s13: the bearing platform steel bar double-layer bidirectional support is arranged on the cushion block to prevent water from seeping upwards along the steel bar; pouring concrete at the post-pouring belt 45 days later than concrete at two corresponding sides, wherein the concrete is micro-expansion concrete with a higher grade than the concrete at the two sides and is internally doped with anti-crack fibers; the post-cast strip is maintained for at least three weeks in a moistening mode, the shoring steel pipes are not detached before the post-cast strip of the top plate is constructed, and the formwork is detached after the concrete strength reaches 28 days; and after the concrete of the outer wall post-cast strip is fully dried, a waterproof reinforcing layer and a waterproof layer are manufactured, the width of the waterproof reinforcing layer exceeds the two sides of the post-cast strip by 25cm respectively, and then the outer wall post-cast strip is painted with a thickness of 20mm, namely 1:2.5 waterproof mortar, and finally building a brick wall with the thickness of 240mm for protection;

s14: the inner side water stop belt of the water stop frame is a rib-free spherical water stop belt, the thickness of the rib-free spherical water stop belt is 30mm, the width of the rib-free spherical water stop belt is 350mm, the diameter of a sphere is 60mm, the water stop belt and a steel cover plate are perforated by a perforating machine according to the distance between bolts, the steel cover plate is subjected to hot galvanizing treatment, the diameter of the steel cover plate is controlled to be 16.5mm, the diameter of the water stop belt is controlled to be 15mm so as to ensure the tight combination with the bolts, meanwhile, a rubber gasket is additionally arranged between a nut and the steel cover plate.

S14: the concrete at the water stop frame part adopts fine stone concrete with the same strength, is vibrated by a vibrating spear with the diameter of 30mm, and is strictly operated according to the requirements of operation regulations; when the reinforcing steel bars are bound, the thickness of a reinforcing steel bar protective layer is ensured, particularly the thickness of an outer protective layer is not less than 30mm, so that a seepage channel is prevented from being generated through the side wall of the reinforcing steel bar; if the concrete is not compacted and the water-stopping frame is empty, the hole which can be filled is formed by chiseling immediately, and the plugging agent is added into the waterproof fine stone concrete for plugging.

Further, if the base layer in the step S1 has leakage, plugging and drainage treatment should be performed in advance to avoid affecting the construction of the waterproof layer, and if the flatness of the base layer does not meet the requirements, the method of 1:2.5 filling and leveling cement mortar, if there are sharp objects of the reinforcing bar head and the bolt lamp protruding out of the surface of the base layer, cutting off and leveling.

Further, before the coiled material is laid in a large area in the step S6, trial laying is performed, when the first PV100 polymer self-adhesive film pre-laid coiled material is laid, the coiled material is positioned and laid on the base surface in a blank manner according to the elastic reference line, the smooth surface of the coiled material faces the base layer, and the position of the coiled material is carefully corrected. Long limit overlap joint width 70mm tears the barrier paper that the coiled material reserved self-adhesion overlap joint during the overlap joint operation earlier, and self-adhesion overlap joint limit should keep clean, dry, no dust, when carrying out the overlap joint bonding operation, air in the overlap joint limit of discharging on one side glues the jail with the compression roller compaction on one side, and the minor face overlap joint adopts the hot-blast rifle to shovel off coiled material surface particle, adopts supporting special double-sided tape to paste and the compaction glues the jail, and overlap joint width 80 mm.

Further, when the waterproof roll is laid on the large plane in the step S6, in order to prevent extreme situations, nails may be mechanically fixed at the overlapping edge position every 3 to 5 meters during the laying process, and the nail holes are covered by the lower auxiliary roll.

Further, in the step S9, the two sides of the post-cast strip, the bottom plate concrete and the reinforcing steel bars in the post-cast strip need to be cleaned up, and the post-cast strip needs to be wetted for 24 hours before casting; when pouring, no sundries or water need to be left.

Furthermore, in the step S6, the large-area coil needs to be laid according to a far-end-to-near laying method to ensure that the constructor does not excessively tread the finished waterproof layer of the coil, and the next procedure of construction can be performed by laying a temporary protection layer on the laid waterproof layer.

Compared with the prior art, the invention has the beneficial effects that: according to the waterproof construction method for the basement of the building engineering, the waterproof performance of the reinforced concrete at the inner layer is enhanced through the PV100 waterproof coiled material, the PV100 waterproof coiled material can form continuous and permanent full-adhesion combination with the poured concrete, the water channeling problem is effectively prevented, the waterproof construction method is tightly adhered to a structure, is not influenced by uneven settlement of a substrate, does not need to be provided with a protective layer, and can be used for directly carrying out next procedure construction; filling treatment and waterproof treatment are carried out on the construction joint in the later period, so that the problem possibly occurring in the later period of the construction joint is avoided; the adoption of sectional pouring is favorable for the stability of the internal structure and the generation of later cracks is avoided; the SBS polyester felt matrix modified asphalt coiled material has the excellent performances of large longitudinal and transverse tension, good elongation, strong toughness, low temperature resistance, aging resistance, ultraviolet ray resistance, temperature difference change resistance, self-healing force adhesion and the like; the SAM-930 self-adhesive polymer modified asphalt waterproof coiled material has excellent tensile strength, fatigue resistance, puncture resistance, corrosion resistance, larger elongation rate and strong adaptability to the expansion or cracking deformation of a base layer.

Drawings

FIG. 1 is a schematic view of a waterproof structure of a waterproof node for internal and external corners according to the present invention;

FIG. 2 is a schematic view of a waterproof structure of the contact surface between the bottom plate and the side elevation of the present invention;

FIG. 3 is a schematic view of the waterproof structure of the pile head and the periphery of the pile head according to the present invention;

FIG. 4 is a schematic view of the waterproof structure of the post-cast strip of the frame bottom plate according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.