Concrete permeation and sealing composite waterproof construction method

文档序号：774577 发布日期：2021-04-09 浏览：36次中文

阅读说明：本技术 一种混凝土渗透与密封复合防水施工方法 (Concrete permeation and sealing composite waterproof construction method ) 是由郑磊于 2020-12-30 设计创作，主要内容包括：本发明属于建筑工程技术领域,涉及一种混凝土渗透与密封复合防水施工方法。其技术要点如下：包括如下操作步骤：S1.基层处理；S2.整体喷洒水使混凝土表面润湿；S3.将完全浸渍了无机防水剂的无纺布贴于混凝土表面；S4.在无纺布表面均匀涂刷2～3遍无机防水剂；S5.在无纺布表面均匀涂刷有机丙烯酸酯混合溶液；S6.揭下无纺布；S7.将半干的有机丙烯酸混合溶液用刮刷刮平；S8.涂刷密封固化剂；S9.常温自然固化养生。本发明提高无机防水剂在混凝土中的渗透率以及无机防水剂与有机丙烯酸酯之间的粘结力,进而提高混凝土内部以及表面的强度和抗压强度。(The invention belongs to the technical field of building engineering, and relates to a concrete permeation and sealing composite waterproof construction method. The technical points are as follows: the method comprises the following operation steps: s1, base layer treatment; s2, integrally spraying water to wet the surface of the concrete; s3, sticking the non-woven fabric completely soaked with the inorganic waterproof agent on the surface of the concrete; s4, uniformly coating an inorganic waterproof agent on the surface of the non-woven fabric for 2-3 times; s5, uniformly brushing an organic acrylate mixed solution on the surface of the non-woven fabric; s6, uncovering the non-woven fabric; s7, scraping the semi-dry organic acrylic acid mixed solution by using a scraping brush; s8, brushing a sealing curing agent; s9, natural curing at normal temperature. The invention improves the permeability of the inorganic waterproofing agent in concrete and the binding power between the inorganic waterproofing agent and the organic acrylate, thereby improving the strength and the compressive strength of the interior and the surface of the concrete.)

1. A concrete permeation and sealing composite waterproof construction method is characterized by comprising the following operation steps:

s1. base layer processing: after concrete pouring or mortar plastering is finished for more than 48 hours, treating the surface of the base layer, removing the defects of bulges, pits, cracks and looseness of the surface of the base layer, which are more than 0.4mm, and sweeping away dust and impurities on the surface;

s2, spraying water on the whole to wet the surface of the concrete and ensure that no water drop floats on the surface of the concrete;

s3, sticking the non-woven fabric completely soaked with the inorganic waterproof agent on the surface of the concrete, and using a scraping brush to drive out pores and bubbles between the non-woven fabric and the concrete so as to completely stick the non-woven fabric and the surface of the concrete;

s4, uniformly brushing an inorganic waterproof agent for 2-3 times on the surface of the non-woven fabric;

s5, uniformly brushing the organic acrylate mixed solution on the surface of the non-woven fabric;

s6, when the organic acrylate mixed solution is semi-dry, the non-woven fabric is uncovered;

s7, scraping the half-dried organic acrylic acid mixed solution by using a scraping brush;

s8, brushing a sealing curing agent after the organic acrylic acid mixed solution is completely dried;

s9, natural curing at normal temperature.

2. The concrete infiltration and sealing composite waterproof construction method according to the claim 1, wherein in the step S4, painting operations of different times are performed crosswise.

3. The method as claimed in claim 1, wherein the step S4 is performed by painting a second inorganic waterproof agent when the non-woven fabric is semi-dry.

4. The concrete infiltration and sealing composite waterproof construction method according to the claim 1 or 2, characterized in that in the step S5, the painting times of the organic acrylate mixed solution is more than 3 times.

5. The concrete infiltration and sealing composite waterproof construction method according to claim 4, wherein the second painting of the organic acrylate mixed solution is performed when the first painting of the organic acrylate mixed solution is half-dry.

6. The concrete penetration and sealing composite waterproof construction method according to claim 1, characterized in that the sealing curing agent is brushed for 2-3 times, and brushing operations of different times are performed in a cross manner.

7. The concrete penetration and sealing composite waterproof construction method according to claim 1, wherein the sealing curing agent comprises the following components in parts by weight: 50-70 parts of active silicate, 10-20 parts of magnesium fluosilicate, 1-3 parts of zinc fluosilicate, 1-3 parts of hydrofluoric acid, 1-3 parts of polymeric guanidine salt and 1-3 parts of calcium zincate.

8. The concrete penetration and sealing composite waterproof construction method according to claim 1, wherein the inorganic waterproof agent is prepared from the following components in parts by weight: 20-30 parts of silicate, 10-15 parts of carbonate, 5-8 parts of sodium hydroxide, 3-5 parts of inorganic silicon, 2-5 parts of manganese dioxide, 2-4 parts of polyurethane and 50-60 parts of water.

9. The concrete penetration and sealing composite waterproof construction method according to claim 1 or 8, characterized in that the organic acrylate mixed solution comprises the following components in parts by weight: 20-30 parts of polyethylene glycol diacrylate, 10-15 parts of sugar-reduced chrome tanning liquid and 5-8 parts of polyethyleneimine.

10. The method as claimed in claim 9, wherein the step S5 is performed while the inorganic waterproofing agent is semi-dried by applying the organic acrylate mixed solution.

Technical Field

The invention belongs to the technical field of building engineering, and relates to a concrete permeation and sealing composite waterproof construction method.

Background

In the engineering field, concrete and mortar are widely used as the most common fixed and fabricated structures, and the construction and construction of concrete and mortar are widely applied no matter in the construction field, the road and bridge engineering field or other engineering fields. Among them, many concrete structures are constructed in damp, watery, even acid, alkali oil salt and other various environments which are obviously harmful to the concrete and mortar structures, so the requirements of seepage prevention and water prevention need to be fully considered when constructing the concrete and mortar structures, and the technical problems which are continuously solved by the technical personnel in the field are ensured to ensure the construction quality of the concrete and the long durability of the engineering.

In addition, an anti-seepage agent is sprayed on the surface of the concrete or mortar, so that the phenomenon that water, acid and alkali or other substances harmful to the concrete structure permeate the surface of the concrete or mortar structure and are coated with taxed high molecular compounds is also a commonly adopted mode in the industry, but because the coating layer is often damaged by external factors, a good waterproof and anti-seepage effect cannot be achieved frequently.

In view of the defects in the existing concrete waterproof construction, the inventor develops a concrete permeation and sealing composite waterproof construction method based on years of abundant experience and professional knowledge of the materials, and by matching with theoretical analysis and research and innovation, the waterproof and anti-seepage effect of concrete is obviously improved, the construction quality is optimized, and the service life of the concrete is prolonged.

Disclosure of Invention

The invention aims to provide a concrete permeation and sealing composite waterproof construction method, which ensures the wettability of the surface of concrete in the coating process of a mixed solution of an inorganic waterproof agent and organic acrylate by using non-woven fabrics as a medium, thereby improving the permeability of the inorganic waterproof agent in the concrete and the binding power between the inorganic waterproof agent and the organic acrylate, further improving the strength and the compressive strength of the interior and the surface of the concrete, simultaneously improving the anti-seepage and waterproof performance of the concrete, and having simple and safe construction and environmental protection.

The technical purpose of the invention is realized by the following technical scheme:

the invention provides a concrete permeation and sealing composite waterproof construction method, which comprises the following operation steps:

s1, base layer treatment: after concrete pouring or mortar plastering is finished for more than 48 hours, treating the surface of the base layer, removing the defects of bulges, pits, cracks and looseness of the surface of the base layer, which are more than 0.4mm, and sweeping away dust and impurities on the surface;

s2, integrally spraying water to wet the surface of the concrete and ensuring that no water drops float on the surface of the concrete;

s3, adhering the non-woven fabric completely soaked with the inorganic waterproof agent to the surface of the concrete, and using a scraping brush to drive out pores and bubbles between the non-woven fabric and the concrete so as to completely adhere the non-woven fabric to the surface of the concrete;

s4, uniformly coating an inorganic waterproof agent on the surface of the non-woven fabric for 2-3 times;

s5, uniformly brushing an organic acrylate mixed solution on the surface of the non-woven fabric;

s6, when the organic acrylate mixed solution is semi-dry, removing the non-woven fabric;

s7, scraping the semi-dry organic acrylic acid mixed solution by using a scraping brush;

s8, brushing a sealing curing agent after the organic acrylic acid mixed solution is completely dried;

s9, natural curing at normal temperature.

According to the invention, the inorganic waterproof agent is uniformly covered on the surface of the concrete through the non-woven fabric, so that the long-time wettability of the surface of the concrete is improved, and further, the permeability of the inorganic waterproof agent in the concrete is improved, more pores in the concrete are filled, and the waterproof performance of the concrete is greatly improved; and simultaneously, the organic acrylate mixed solution is coated on the surface of the inorganic waterproof agent, and the inorganic waterproof agent is coated when the last layer of the inorganic waterproof agent is semi-dry, so that the adhesive force between the inorganic waterproof agent and the organic acrylate mixed solution can be improved. During construction, the penetration and absorption of the inorganic waterproof agent are promoted through the water retention effect of the non-woven fabric, the organic acrylate mixed solution is synchronously sprayed to form a macromolecule layer, the inorganic waterproof agent is sealed, the advantages of rigid waterproof and flexible waterproof are combined, the seepage-proofing and waterproof performance of concrete is improved, and the construction is simple and safe, green and environment-friendly.

Further, in step S4, the brushing operations of different passes are performed crosswise, which can make the brushing more uniform.

Further, in step S4, the inorganic water repellent is applied again for the second time while the nonwoven fabric is half-dried. When the non-woven fabric is semi-dry, the first inorganic waterproof agent completely permeates into the concrete but is not solidified, and the second inorganic waterproof agent can push the first inorganic waterproof agent into deeper concrete through osmotic pressure, so that the permeability of the inorganic waterproof agent is greatly improved.

Further, in step S5, the number of brushing passes of the organic acrylate mixed solution is more than 3.

Further, the second painting of the organic acrylate mixed solution is painting while the first painting of the organic acrylate mixed solution is semi-dry. And brushing the organic acrylate mixed solution for the second time when the organic acrylate mixed solution for the first time is half-dried so as to ensure the binding power between the organic acrylate mixed solution and the inorganic waterproof agent and ensure that the organic acrylate mixed solution can be slowly cured, so that the cured coating is more uniform and compact.

Further, the sealing curing agent is coated for 2-3 times, and the coating operation of different times is performed in a transverse and vertical crossing mode.

Further, the sealing curing agent comprises the following components in parts by weight: 50-70 parts of active silicate, 10-20 parts of magnesium fluosilicate, 1-3 parts of zinc fluosilicate, 1-3 parts of hydrofluoric acid, 1-3 parts of polymeric guanidine salt and 1-3 parts of zincate. The addition of the components can obviously improve the strength and the hydrophobicity of the concrete structure and simultaneously has certain antibacterial and antiseptic functions.

Further, the zincate is any one of sodium zincate, magnesium zincate and potassium zincate. Wherein, the magnesium zincate forms magnesium hydroxide colloid after being dissolved in water, and forms stable brucite crystal with silicate and quicklime in cement, and has the functions of resisting thermal expansion and cold contraction, weathering corrosion, abrasion and ultraviolet aging.

Further, the inorganic waterproof agent is prepared from the following components in parts by weight: 20-30 parts of silicate, 10-15 parts of carbonate, 5-8 parts of sodium hydroxide, 3-5 parts of inorganic silicon, 2-5 parts of manganese dioxide, 2-4 parts of polyurethane and 50-60 parts of water. The addition of the inorganic waterproof agent can utilize the principle of permeation to enable free alkali in concrete to react with a catalyst in a solution to form crystals, fill all tiny pores in the concrete, and further become a part of the whole structure of the concrete, so that the corrosion of external water, acid, alkali oil salt and other various harmful substances to the concrete is completely prevented, the looseness and cracks of the concrete are improved, the inorganic waterproof agent can permeate into the deep layer of the concrete through the slow release effect of non-woven fabrics, and further the strength of the concrete is improved.

Further, the organic acrylate mixed solution comprises the following components in parts by weight: 20-30 parts of polyethylene glycol diacrylate, 10-15 parts of sugar-reduced chrome tanning liquid and 5-8 parts of polyethyleneimine. The sugar-reduced chrome tanning liquid in the organic acrylate mixed solution has metal ion coordination capacity, can generate coordination reaction with an inorganic waterproof agent, and combines the inorganic waterproof agent and the organic acrylate mixed solution together, so that the concrete has hydrophobic and waterproof capacity, the seepage-proofing and waterproof performance of the concrete is further improved, the service life of the concrete is prolonged, and meanwhile, through the co-permeation of a polymerization component of the sugar-reduced chrome tanning liquid and the inorganic waterproof agent, the crosslinking of cement is promoted, and the mechanical binding power and the cohesive force in the concrete are improved.

Further, in step S5, the organic acrylate mixed solution is applied while the inorganic water repellent is semi-dry. When the inorganic waterproofing agent is semi-dry, heat can be released when the inorganic waterproofing agent reacts with concrete, the temperature of the surface of the concrete is increased, and the reaction between metal ions in the inorganic waterproofing agent and the sugar-reduced chrome tanning liquid is promoted, so that the binding power between the inorganic waterproofing agent and organic acrylate is improved.

In conclusion, the invention has the following beneficial effects:

the invention ensures the wettability of the concrete surface in the coating process of the inorganic waterproofing agent and organic acrylate mixed solution by taking the non-woven fabric as a medium, thereby improving the permeability of the inorganic waterproofing agent in the concrete and the binding power between the inorganic waterproofing agent and the organic acrylate, further improving the strength and the compressive strength of the interior and the surface of the concrete, simultaneously improving the anti-seepage and waterproof performances of the concrete, and having simple and safe construction and being green and environment-friendly.

Detailed Description

To further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the concrete infiltration and sealing composite waterproof construction method according to the present invention, the specific implementation, characteristics and effects thereof are described in detail as follows.

Concrete permeation and sealing composite waterproof construction method

1. A concrete penetration and sealing composite waterproof construction method comprises the following operation steps:

s2, integrally spraying water to wet the surface of the concrete and ensuring that no water drops float on the surface of the concrete;

s4, uniformly coating the inorganic waterproofing agent on the surface of the non-woven fabric for 3 times, wherein the coating operations of different times are performed in a transverse and vertical crossing manner, and the inorganic waterproofing agent is coated for the second time when the non-woven fabric is semi-dry;

s5, uniformly brushing the organic acrylate mixed solution on the surface of the non-woven fabric for 3 times, wherein brushing operations of different times are performed in a transverse and vertical crossing mode, and when the organic acrylate mixed solution is semi-dry, a second time of inorganic waterproof agent is brushed;

s6, when the organic acrylate mixed solution is semi-dry, removing the non-woven fabric;

s7, scraping the semi-dry organic acrylate mixed solution by using a scraping brush;

s8, brushing a sealing curing agent after the organic acrylate solution is completely dried, brushing the curing agent for 3 times, and performing brushing operations of different times in a transverse and vertical crossing manner;

s9, natural curing at normal temperature.

Example 1

All starting materials referred to in this example are commercially available.

1. A concrete penetration and sealing composite waterproof construction method comprises the following operation steps:

s2, integrally spraying water to wet the surface of the concrete and ensuring that no water drops float on the surface of the concrete;

s4, uniformly coating the inorganic waterproofing agent on the surface of the non-woven fabric for 3 times;

s5, uniformly brushing an organic acrylate mixed solution on the surface of the non-woven fabric;

s6, when the organic acrylate mixed solution is semi-dry, removing the non-woven fabric;

s7, scraping the semi-dry organic acrylic acid mixed solution by using a scraping brush;

s8, brushing a sealing curing agent after the organic acrylic acid mixed solution is completely dried;

s9, natural curing at normal temperature.

Calculating according to parts by weight:

the inorganic waterproof agent comprises the following components: 20 parts of sodium silicate, 10 parts of potassium carbonate, 5 parts of sodium hydroxide, 3 parts of inorganic silicon, 2 parts of manganese dioxide, 2 parts of polyurethane and 50 parts of water.

The organic acrylate mixed solution comprises the following components: 20 parts of polyethylene glycol diacrylate, 10 parts of sugar reduction chrome tanning liquid and 5 parts of polyethyleneimine.

The sealing curing agent comprises the following components: 50 parts of active silicate, 10 parts of magnesium fluosilicate, 1 part of zinc fluosilicate, 3 parts of hydrofluoric acid, 3 parts of hexamethyl polymeric monoguanidine and 3 parts of magnesium zincate.

Example 2