阅读说明：本技术 一种水泥基防水填充材料 (Cement-based waterproof filling material ) 是由 李学虎 李灶林 高红刚 于 2019-06-18 设计创作，主要内容包括：一种水泥基防水填充材料,包括：基料、硅酸钠溶液和水；基料、硅酸钠溶液和水之间的质量配比为基料：硅酸钠溶液：水＝10：(0.5～1.1)：15；基料,按质量分数,包括：82～96％的水泥、0.5～5％早强剂、0.1～1.1％水泥发泡剂、1～2％的丙烯酸胶粉、0.1～1％的抗裂纤维及余量的钙粉；早强剂为甲酸钙、碳酸锂和硫酸锂中的任意一种或组合；水泥发泡剂为α-烯基磺酸钠。本设计为一种防水填充材料,其带丙烯酸胶粉和硅酸钠溶液,两者配合本申请的水泥、早强剂、特定比例的水泥发泡剂、抗裂纤维及钙粉,能在本申请的配方降低吸水率和提高抗压强度。(A cement-based waterproof filler material comprising: base material, sodium silicate solution and water; the mass ratio of the base material, the sodium silicate solution and the water is as follows: sodium silicate solution: water 10: (0.5-1.1): 15; the base material comprises the following components in percentage by mass: 82-96% of cement, 0.5-5% of an early strength agent, 0.1-1.1% of a cement foaming agent, 1-2% of acrylic acid rubber powder, 0.1-1% of anti-cracking fiber and the balance of calcium powder; the early strength agent is any one or combination of calcium formate, lithium carbonate and lithium sulfate; the cement foaming agent is alpha-sodium alkenyl sulfonate. The design is a waterproof filling material, which is provided with acrylic acid rubber powder and a sodium silicate solution, and the acrylic acid rubber powder and the sodium silicate solution are matched with the cement, the early strength agent, the cement foaming agent with a specific proportion, the anti-cracking fiber and the calcium powder, so that the water absorption rate can be reduced and the compressive strength can be improved in the formula.)

1. a cement-based waterproof packing material, comprising: base material, sodium silicate solution and water;

The mass ratio of the base material to the sodium silicate solution to the water is as follows: sodium silicate solution: water 10: (0.5-1.1): 15;

The base material comprises the following components in percentage by mass: 82-96% of cement, 0.5-5% of an early strength agent, 0.1-1.1% of a cement foaming agent, 1-2% of acrylic acid rubber powder, 0.1-1% of anti-cracking fiber and the balance of calcium powder;

The early strength agent is any one or combination of calcium formate, lithium carbonate and lithium sulfate; the cement foaming agent is alpha-sodium alkenyl sulfonate.

2. The cement-based waterproof filling material as claimed in claim 1, wherein the modulus of the sodium silicate solution is 3 to 4.

3. the cement-based waterproof filling material as claimed in claim 1, wherein the mesh number of the calcium powder is 320-330 meshes.

4. the cement-based waterproof filling material as claimed in claim 3, wherein the mesh number of the calcium powder is 325 mesh.

5. The cement-based waterproof filling material as claimed in claim 1, wherein the early strength agent has a mesh size of 120-200 meshes.

6. The cement-based waterproof filling material as claimed in claim 1, wherein the cement is any one or combination of portland cement, aluminate cement and sulpho-alumina cement.

7. The cement-based waterproof filling material as claimed in claim 6, wherein the cement is a combination of portland cement and sulpho-aluminous cement;

wherein the strength grade of the portland cement is 42.5R; the strength rating of the sulpho-aluminous cement is 42.5.

Technical Field

The invention relates to the technical field of cement, in particular to a cement-based waterproof filling material.

Background

With the rapid development of the house and land industry, each real estate market is activated abnormally, but the quality of a building is generally unsatisfactory, and commercial houses purchased at great cost have quality problems, wherein the problem of toilet leakage is the most prominent. The building toilet sedimentation tank is filled with ceramsite, and the ceramsite has low hardness and is not waterproof; mortar is adopted for filling, common mortar is not waterproof, waterproof mortar is adopted, and the price is high. The mortar is heavy, so that the sedimentation tank is easy to sink, crack and leak water.

Disclosure of Invention

The invention aims to provide a cement-based waterproof filling material which utilizes components between acrylic rubber powder and a sodium silicate solution, has the best waterproof effect according to a specific proportion, has low water absorption rate and also has the best compressive strength.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cement-based waterproof filler material comprising: base material, sodium silicate solution and water;

the mass ratio of the base material to the sodium silicate solution to the water is as follows: sodium silicate solution: water 10: (0.5-1.1): 15;

The base material comprises the following components in percentage by mass: 82-96% of cement, 0.5-5% of an early strength agent, 0.1-1.1% of a cement foaming agent, 1-2% of acrylic acid rubber powder, 0.1-1% of anti-cracking fiber and the balance of calcium powder;

The early strength agent is any one or combination of calcium formate, lithium carbonate and lithium sulfate; the cement foaming agent is alpha-sodium alkenyl sulfonate.

Further, the modulus of the sodium silicate solution is 3-4.

Furthermore, the mesh number of the calcium powder is 320-330 meshes.

Further, the mesh number of the calcium powder is 325 mesh.

Furthermore, the mesh number of the early strength agent is 120-200 meshes.

Further, the cement is any one or combination of portland cement, aluminate cement and sulpho-aluminous cement.

More specifically, the cement is a combination of portland cement and sulpho-aluminous cement;

wherein the strength grade of the portland cement is 42.5R; the strength rating of the sulpho-aluminous cement is 42.5.

The invention has the beneficial effects that:

1. the design is a waterproof filling material, which is provided with acrylic acid rubber powder and a sodium silicate solution, and the acrylic acid rubber powder and the sodium silicate solution are matched with the cement, the early strength agent, the cement foaming agent with a specific proportion, the anti-cracking fiber and the calcium powder, so that the water absorption rate can be reduced and the compressive strength can be improved in the formula.

2. when the content of the acrylic rubber powder is 1-2%, the acrylic rubber powder has optimal water absorption and compressive strength performances, so that the designed waterproof filling material is low in density, high in hardness and good in waterproofness, and can effectively solve the problem of sink basin water leakage in a toilet.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments.

A cement-based waterproof filler material comprising: base material, sodium silicate solution and water;

The mass ratio of the base material to the sodium silicate solution to the water is as follows: sodium silicate solution: water 10: (0.5-1.1): 15;

The base material comprises the following components in percentage by mass: 82-96% of cement, 0.5-5% of an early strength agent, 0.1-1.1% of a cement foaming agent, 1-2% of acrylic acid rubber powder, 0.1-1% of anti-cracking fiber and the balance of calcium powder;

The early strength agent is any one or combination of calcium formate, lithium carbonate and lithium sulfate; the cement foaming agent is alpha-sodium alkenyl sulfonate.

The design is a waterproof filling material, which is provided with acrylic acid rubber powder and a sodium silicate solution, wherein the acrylic acid rubber powder and the sodium silicate solution are matched with the cement, the early strength agent, the cement foaming agent with a specific proportion, the anti-cracking fiber and the calcium powder, so that the water absorption rate can be reduced and the compressive strength can be improved in the formula of the application; and when the content of the acrylic rubber powder is 1-2%, the acrylic rubber powder has optimal water absorption and compressive strength performances, so that the designed waterproof filling material is low in density, high in hardness and good in waterproofness, and can effectively solve the problem of sink basin water leakage in a toilet.

In this application, sodium silicate solution is used as the curing agent for curing the binder and water.

The modulus of the sodium silicate solution is 3-4.

the modulus is used for controlling the curing speed and hardness of the waterproof filling material; the modulus can not be too high or too low, because the curing speed is high if the modulus is too high, but because the curing speed is high, the internal components are not completely regulated yet and are cured, and the components have uneven distribution and large internal stress, so that the waterproof filling material is not favorable, and the waterproof filling material is easy to break and the like; and if the modulus is too low, the problems of low curing speed and low hardness are easy to occur, and the final effect of the finished product is not facilitated.

The mesh number of the calcium powder is 320-330 meshes.

The calcium powder belongs to a component with cost, has the optimal filling effect, and can reduce the cost after filling; meanwhile, the application also finds that the mesh number is within the range of 320-330 meshes, and the compressive strength of the material is improved.

The mesh number of the calcium powder is 325 meshes.

the mesh number of the early strength agent is 120-200 meshes.

The cement is any one or combination of portland cement, aluminate cement and sulpho-aluminium cement.

The cement is ordinary portland cement, aluminate cement or sulpho-aluminium cement, etc., and the strength is more than or equal to 42.5 MPa; the invention adopts PO42.5R and sulphoaluminate cement 42.5 as binders, and the added sulphoaluminate cement improves the hardness of the product.

The cement is the combination of Portland cement and sulpho-aluminium cement; wherein the strength grade of the portland cement is 42.5R; the strength rating of the sulpho-aluminous cement is 42.5.

Method for evaluating items:

(1) Dry density

taking 3 test pieces, measuring length values in the length direction, the width direction and the height direction, wherein the length value in each direction is measured 1 time respectively at the two ends and the middle of the test piece, then the length values in the opposite surfaces of the test piece are measured 1 time respectively for 6 times, the accuracy is 1mm, and the average value of the 6 times of measurement is taken as the length value in the direction. The volume V of each specimen was calculated.

Curing 3 test pieces under standard conditions for 27 days, then placing the test pieces in a drying oven at the temperature of (60 +/-5) DEG C for drying until the mass difference between the two test pieces at the interval of 4 hours is less than 1g, taking out the test pieces, placing the test pieces in a dryer, cooling the test pieces to room temperature, weighing the test pieces, and drying the test pieces until the weight is accurate to 1 g.

Calculating dry density:

Dry density is the test piece drying mass/test piece volume;

Several densities less than or equal to 300kg/m³the product is qualified.

(2) Compressive strength

Preparing a film with the standard ratio of 40mm to 160mm, maintaining for 28 days under the standard condition, taking 3 test pieces, and testing by adopting a standard compression testing machine, wherein the compression strength is qualified when the compression strength is more than or equal to 2.0 Mpa.

(3) mass water absorption

Preparing a film of 40mm x 160mm according to a standard proportion, curing for 27 days under a standard condition, then placing the film in a drying oven at the temperature of (60 +/-5) DEG C for drying until the mass difference between the two times of drying is less than 1g, taking out the film, placing the test piece in a dryer, and weighing the dried mass of the test piece after the test piece is cooled to the room temperature to be accurate to 1 g. Putting into a water tank, and completely soaking in water for 24 h. The test piece is taken out from the water and is wiped off the surface moisture by using a wet cloth, and the quality of the test piece in a factory area is required to be 1g immediately.

Calculation of water absorption:

Water absorption rate (mass after specimen water absorption-mass after specimen drying)/mass after specimen drying 100

if the mass water absorption is less than or equal to 5, the product is qualified.