阅读说明：本技术 一种建筑物变形缝渗漏维修方法 (Building deformation joint leakage maintenance method ) 是由 姚国友 石小成 吴建港 金鑫 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种建筑物变形缝渗漏维修方法,其特征在于,包括如下步骤：S1、现场勘验清理,S2、打孔灌浆,S3、表面防水处理,S4、压条固定。其中,S2、打孔灌浆包括：在凿除凹槽内钻取位于变形缝两侧的灌浆孔,并在灌浆孔内埋设插入到混凝土基面内的止水针头,向止水针头内灌入丙烯酸盐浆料以对混凝土基面内的缝隙进行封闭。S3、表面防水处理包括：依次在凿除凹槽表面涂覆速凝型水不漏、环氧砂浆、环氧粘结胶,再通过嵌装橡胶止水条来填实凿除凹槽。本发明的变形缝渗漏维修方法能有效隔断变形缝渗水通道的渗漏,耐久止水,适应变形缝的二次变形,可应用于变形缝明水堵漏的耐久性工法。(The invention discloses a building deformation joint leakage maintenance method which is characterized by comprising the following steps: s1, on-site investigation and cleaning, S2, punching and grouting, S3, surface waterproof treatment, and S4, batten fixing. Wherein, S2, the grout that punches includes: and drilling grouting holes on two sides of the deformation joint in the chiseling groove, embedding a water stopping needle head inserted into the concrete base surface in the grouting hole, and pouring acrylate slurry into the water stopping needle head to seal a gap in the concrete base surface. S3, the surface waterproof treatment comprises the following steps: and sequentially coating quick-setting type watertight epoxy mortar and epoxy adhesive on the surface of the chiseled groove, and filling the chiseled groove by embedding a rubber water stop strip. The deformation joint leakage maintenance method can effectively block leakage of the deformation joint water seepage passage, is durable and water-stopping, adapts to secondary deformation of the deformation joint, and can be applied to a durable construction method for deformation joint open water leakage stopping.)

1. A building deformation joint leakage maintenance method is characterized by comprising the following steps: s1, performing on-site investigation and cleaning; s2, punching and grouting; s3, performing surface waterproofing treatment; s4, fixing a pressing strip; wherein the content of the first and second substances,

s1, the on-site investigation and cleaning comprises the following steps: checking and confirming the leakage position of the deformation joint, removing impurities in the deformation joint, and chiseling a concrete base surface at the top end of the deformation joint to form a chiseling groove;

s2, the punching grouting comprises the following steps: drilling grouting holes on two sides of the deformation joint in the chiseling groove, embedding a water stopping needle head inserted into the concrete base surface in the grouting holes, and pouring acrylate slurry into the water stopping needle head to seal a gap in the concrete base surface;

s3, the surface waterproof treatment comprises the following steps: s31, removing the water-stopping needle head, sealing the water-stopping needle head by adopting a quick-setting type water-tight seal and scraping the surface of the chiseled groove to seal the water seepage channel; s32, after the quick-setting type water-tight solidification, carrying out blade coating and repairing on the surface of the chiseled groove coated with the quick-setting type water-tight solidification by using epoxy mortar so as to enable the surface of the chiseled groove to be flat; s33, after the epoxy mortar is solidified, brushing the surface of the chiseled groove coated with the epoxy mortar by using epoxy adhesive; and S34, embedding a rubber water stop strip in the chiseled groove to fill the chiseled groove.

2. A building deformation joint leakage repairing method according to claim 1, wherein in step S1, after the chiseled groove is formed, the bottom wall and the side wall of the chiseled groove are ground and cleaned, and the height difference of the bottom wall of the chiseled groove on both sides of the deformation joint is ensured not to exceed 1 cm.

3. The method for repairing a leakage of a deformation joint of a building according to claim 1, wherein in step S2, the grouting holes at both sides of the deformation joint are staggered, and the distance between two adjacent grouting holes at the same side of the deformation joint is 30-50 cm.

4. The method for repairing a leakage of a deformation joint of a building as claimed in claim 1, wherein in step S32, the thickness of the coating is kept uniform throughout the chiseled groove when the epoxy mortar is coated.

5. The method for repairing a leakage of a deformation joint of a building as claimed in claim 1, wherein the rubber sealing strip is slowly pressed in from the end of the chiseled groove in step S34, and the rapid-hardening type water-tight, epoxy mortar and epoxy adhesive applied to the side wall of the chiseled groove are prevented from being damaged.

6. The method of claim 1, wherein the fixing of the bead includes press fitting the bead of steel plate over the chiseled groove at the top of the concrete base surface in step S4.

7. The method for repairing a leakage of a deformation joint of a building as claimed in claim 1, wherein the expansion rate of the rubber water stop strip is 200-250%.

8. The method for repairing leakage of deformation joint of building according to claim 1, wherein the amount of quick-setting type watertight is 1.5kg/m²The batch scraping thickness is 1 mm.

9. The method for repairing leakage of deformation joint of building as claimed in claim 1, wherein the epoxy mortar is used in an amount of 15kg/m²The thickness of the coating was 10 mm.

10. A method of leak repair of a deformation joint in a building according to claim 1, characterised in that the use of an epoxy adhesive is usedThe amount is 0.1kg/m²The thickness of the brush coating is 0.1 mm.

Technical Field

The invention relates to the field of building construction, in particular to a method for maintaining leakage of a deformation joint of a building.

Background

In industrial and civil buildings, in order to avoid the influence of factors such as air temperature change, uneven foundation settlement, earthquake and the like, the buildings can break structures at deformation sensitive parts in advance, and certain gaps are reserved, so that the buildings at all parts have enough deformation width in the gaps, the buildings cannot be damaged, and the safety of the building structures is ensured. During building construction, waterproof design needs to be carried out on the deformation joint positions, and the waterproof design of the deformation joints at present mainly adopts a rubber water stop belt, a foam plastic rod and other modes to design and construct a waterproof structure according to a relevant method recommended in underground engineering waterproof design specifications. The construction method is limited by construction level, the rubber waterstop and the foam plastic rod are difficult to accurately position and effectively protect in many times, the concrete pouring process can be damaged or shifted, water leakage paths are caused, particularly, underground engineering in the south is prone to rainfall, the water level is high, leakage of deformation joints is easy to occur, and the construction method not only harms the safety and stability of the building structure, but also influences the use function of the building.

As is known, the repair of deformation joints belongs to a building part which is relatively complex and difficult to construct, and the repair of the deformation joints is most likely to occur frequently. For the leakage maintenance of deformation joints, a plurality of different treatment schemes are available on the market, for example, polyurethane grouting materials and water glass are adopted for grouting, cement mortar, sealing paste and waterproof paint are adopted for filling, the treatment effect is unsatisfactory, the treatment effect is mainly reflected in the aspects of material selection, quality and composite treatment effect, the material performance is not suitable for long-term water soaking, deformation and displacement of the deformation joints are easy to occur, the long-term treatment and one-time radical treatment are difficult to achieve due to combined use, and certain leakage risk exists.

Disclosure of Invention

In order to overcome the defects, the invention aims to provide a building deformation joint leakage maintenance method which can effectively block the leakage of a deformation joint water seepage passage, is durable in water stopping, is suitable for secondary deformation of a deformation joint, and can be applied to a durable construction method for deformation joint open water leakage stopping.

In order to achieve the above purposes, the invention adopts the technical scheme that: a building deformation joint leakage maintenance method comprises the following steps: s1, performing on-site investigation and cleaning; s2, punching and grouting; s3, performing surface waterproofing treatment; and S4, fixing the pressing strip. Wherein the content of the first and second substances,

s1, the on-site investigation and cleaning comprises the following steps: checking and confirming the leakage position of the deformation joint, removing impurities in the deformation joint, and chiseling a concrete base surface at the top end of the deformation joint to form a chiseling groove;

s2, the punching grouting comprises the following steps: drilling grouting holes on two sides of the deformation joint in the chiseling groove, embedding a water stopping needle head inserted into the concrete base surface in the grouting holes, and pouring acrylate slurry into the water stopping needle head to seal a gap in the concrete base surface;

s3, the surface waterproof treatment comprises the following steps: s31, removing the water-stopping needle head, sealing the water-stopping needle head by adopting a quick-setting type water-tight seal and scraping the surface of the chiseled groove to seal the water seepage channel; s32, after the quick-setting type water-tight solidification, carrying out blade coating and repairing on the surface of the chiseled groove coated with the quick-setting type water-tight solidification by using epoxy mortar so as to enable the surface of the chiseled groove to be flat; s33, after the epoxy mortar is solidified, brushing the surface of the chiseled groove coated with the epoxy mortar by using epoxy adhesive; and S34, embedding a rubber water stop strip in the chiseled groove to fill the chiseled groove.

The invention has the beneficial effects that: firstly, breaking the concrete base surface at the leakage position of the deformation joint, then pouring low-viscosity acrylate slurry into a fine gap of the concrete base surface to bond the concrete base surface with the concrete at the fine gap, and completely sealing the internal defects of the concrete base surface by utilizing the stability and good aging resistance of the acrylate in water; in S3, firstly, rapidly stopping the leakage and sealing the water-stopping needle head through rapid-hardening water leakage prevention, and preventing the problems of water leakage and dampness of the concrete base surface on which the groove surface is chiseled; then, the water pressure resistance, permeability resistance, frost resistance, salt resistance and corrosion resistance of the deformation joint can be further improved through blade coating of epoxy mortar with the thermal expansion coefficient close to that of concrete, and the deformation joint is prevented from leakage risk again; the adhesion force among the materials is enhanced by brushing epoxy adhesive, a certain back water pressure can be borne, and finally the last water stopping protection is realized by the rainwater expansion performance of the embedded rubber water stopping strip; the invention can effectively isolate the leakage at the water seepage position of the deformation joint by the combined use of five maintenance materials and the reasonable layout of the working procedures, realizes multiple water stop protection on the deformation joint, effectively inhibits the re-leakage phenomenon of the deformation joint and has good protection durability.

Further, in step S1, after the chiseled groove is formed, the bottom wall and the side wall of the chiseled groove are polished and cleaned, and the height difference between the bottom walls of the chiseled grooves on both sides of the deformation joint is not more than 1 cm.

Further, in step S2, the grouting holes located on both sides of the deformation joint are staggered, and the distance between two adjacent grouting holes located on the same side of the deformation joint is 30-50 cm. The grouting holes arranged in a staggered mode can more comprehensively cover the positions, needing to be waterproof, on the concrete base surface, and the deformation joint waterproof treatment effect is further improved.

Further, in step S32, when the epoxy mortar is scraped, the scraping thickness of the entire chiseling groove needs to be kept uniform, so as to prevent the risk that the rubber sealing strip cannot be completely embedded into the chiseling groove during the subsequent construction.

Further, in step S34, the rubber sealing bar needs to be slowly pressed in from the end of the chiseled groove to prevent damage to the quick-setting water-tight, epoxy mortar and epoxy adhesive applied to the side wall of the chiseled groove.

Further, in step S4, the bead fixing includes press-fitting a steel plate bead covering the chiseled groove on the top end of the concrete base.

Furthermore, the expansion rate of the rubber sealing rod is 200-250%, so that the rubber sealing rod is ensured to expand when encountering water to achieve the purpose of water stopping, and the reduction of the impermeability caused by the reduction of the strength of the rubber sealing rod due to the overlarge expansion rate is avoided.

Further, the amount of the quick-setting type water leakage prevention agent is 1.5kg/m²The batch scraping thickness is 1 mm.

Furthermore, the amount of the epoxy mortar used was 15kg/m²The thickness of the coating was 10 mm.

Furthermore, the amount of the epoxy adhesive is 0.1kg/m²The thickness of the brush coating is 0.1 mm.

Drawings

FIG. 1 is a schematic structural view of a deformation joint after construction according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

In the figure:

1-a concrete base surface; 11-chiseling the groove; 2-deformation joint; 3-grouting holes; 4-water stopping needle head; 5-quick-setting type water leakage prevention; 6-epoxy mortar; 7-epoxy adhesive glue; 8-rubber water stop strips; and 9-pressing strips of steel plates.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Examples

Referring to the attached drawings 1-2, the invention discloses a building deformation joint leakage repairing method, which comprises the following steps: s1, performing on-site investigation and cleaning; s2, punching and grouting; s3, performing surface waterproofing treatment; and S4, fixing the pressing strip.

S1, field investigation and cleaning, specifically comprising: firstly, the leakage position of the deformation joint is checked and confirmed, a built-in water stop belt and a built-in foam board are dismantled and cut, then a concrete base surface 1 at the top end of the deformation joint is chiseled to form a chiseling groove 11, then the bottom wall and the side wall of the chiseling groove 11 are polished and cleaned, and the height difference of the bottom wall of the chiseling groove 11 on two sides of the deformation joint 2 is ensured not to exceed 1 cm.

S2, punching and grouting, specifically comprising: and drilling grouting holes 3 positioned at two sides of the deformation joint in the chiseling groove 11, embedding a water stopping needle head 4 inserted into the concrete base surface 1 in the grouting hole 3, and pouring acrylate slurry into the water stopping needle head 4 to seal a gap in the concrete base surface 1.

When the grouting holes 3 are drilled, the grouting holes 3 on the two sides of the deformation joint 2 are arranged in a staggered mode as far as possible, and the distance between the two grouting holes 3 on the same side of the deformation joint 2 is about 30-50 cm. During drilling, the grouting holes 3 are intersected with the water leakage crack pores and are selected at the position where the water leakage amount is larger. When the water-stopping needle head 4 is buried, the outer wall of the water-stopping needle head 4 is tightly combined with the inner wall of the grouting hole 3, so that water is prevented from overflowing from a gap between the water-stopping needle head 4 and the grouting hole 3.

Wherein the formula of the acrylate slurry is as follows: according to the mass percentage, the material comprises 20-40% of magnesium acrylate, 2-6% of diethanol diacrylate, 0.2-0.5% of ammonium persulfate, 0.2-0.5% of tetramethyl ethylene diamine and 60-80% of water.

S3, surface waterproofing treatment, specifically:

s31, removing the water-stopping needle 4, sealing the water-stopping needle 4 by adopting the quick-setting type water-tight seal 5 and scraping the surface of the chiseling groove 11, wherein the using amount of the quick-setting type water-tight seal 5 is 1.5kg/m²The batch scraping thickness is 1 mm.

Wherein, the formula of the quick-setting type water leakage prevention device 5 is as follows: comprises 30-45% of ordinary Portland 425 cement, 30-45% of calcium sulphoaluminate cementing material, 8-15% of anhydrite powder, 1-3% of sodium silicate, 0.2-0.5% of HPMC and 5-10% of rubber powder by mass percentage.

S32, after the quick-setting watertight seal 5 is solidified, carrying out blade coating repair on the surface of the chiseled groove 11 coated with the quick-setting watertight seal by adopting epoxy mortar 6 so as to enable the surface of the chiseled groove 11 to be flat, wherein the using amount of the epoxy mortar 6 is 15kg/m²The thickness of the coating was 10 mm.

When scraping the epoxy mortar 6, the scraping thickness in the whole chiseling groove 11 needs to be kept uniform and consistent, so that the risk that the rubber water stop strip 8 cannot be completely embedded into the chiseling groove 11 during subsequent construction is avoided.

Wherein, the formula of the epoxy mortar 6 is as follows: comprises the following components in percentage by mass: 85% of 128 epoxy resin and 15% of reactive diluent; and (2) agent B: modifying polyether amine; c, agent C: 33% of cement and 67% of fine sand, wherein the ratio of the agent A to the agent B to the agent C is 10:3: 48.

S33, after the epoxy mortar 6 is solidified, using the epoxy adhesive 7 to chisel coated with the epoxy mortarThe surface of the groove 11 is removed and brushed, and the dosage of the epoxy adhesive 7 is 0.1kg/m²The thickness is 0.1 mm.

Wherein, the formula of the epoxy adhesive glue 7 is as follows: comprises the following components in percentage by mass: 40% 128 epoxy resin, 5% 622 reactive diluent, 5% AGE reactive diluent, 50% alumina; and (2) agent B: TX-801 elastic epoxy curing agent, and the ratio of the agent A to the agent B is 5: 2.

S34, embedding a rubber water stop 8 with an expansion rate of 200 and 250% into the chiseling groove 11 to fill the chiseling groove 11.

The rubber sealing strip 8 needs to be slowly pressed in from the end of the chiseled groove 11, and the quick-setting type water-tightness 5, the epoxy mortar 6 and the epoxy adhesive 7 coated on the side wall of the chiseled groove 11 are prevented from being damaged.

S4, fixing a pressing strip, specifically: and pressing the steel plate pressing strip 9 covering the chiseled groove 11 on the top end of the concrete base surface 1, and recovering the decorative panel.

Firstly, breaking the concrete base surface at the leakage position of the deformation joint, then pouring low-viscosity acrylate slurry into a fine gap of the concrete base surface to bond the concrete base surface with the concrete at the fine gap, and completely sealing the internal defects of the concrete base surface by utilizing the stability and good aging resistance of the acrylate in water; in S3, firstly, rapidly stopping the leakage and sealing the water-stopping needle head through rapid-hardening water leakage prevention, and preventing the problems of water leakage and dampness of the concrete base surface on which the groove surface is chiseled; then, the water pressure resistance, permeability resistance, frost resistance, salt resistance and corrosion resistance of the deformation joint can be further improved through blade coating of epoxy mortar with the thermal expansion coefficient close to that of concrete, and the deformation joint is prevented from leakage risk again; the adhesion force among the materials is enhanced by brushing epoxy adhesive, a certain back water pressure can be borne, and finally the last water stopping protection is realized by the rainwater expansion performance of the embedded rubber water stopping strip; the invention can effectively isolate the leakage at the water seepage position of the deformation joint by the combined use of five maintenance materials and the reasonable layout of the working procedures, realizes multiple water stop protection on the deformation joint, effectively inhibits the re-leakage phenomenon of the deformation joint and has good protection durability.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.