Concrete mortar waterproofing agent, waterproofing mortar formulation

Concrete waterproofing agent significantly has the ability to improve the impermeability and waterproofing of concrete, the impermeability level can reach more than P25, and at the same time has the effects of retardation, early strength, water reduction, crack resistance, etc., and can improve the workability of the new mortar: it can replace lime plaster. It is especially suitable for concrete for bungalow roofs, large-volume waterproof concrete, hydraulic concrete, waterproof mortar, etc.

It can completely ** roof leakage, wall moisture return, and ground water seepage.

Efficient impermeability function: mixed with concrete waterproofing agent, can effectively improve the capillary structure of concrete, and at the same time precipitate gel, block the capillary channel inside the concrete, compared with the non-waterproofing agent, the impermeability can be increased by 5-8 times, with a permanent waterproof effect.

However, I feel that it is more appropriate to construct according to the design drawings, it is a common practice to use waterproofing membrane, it is certainly not wrong, and the waterproof effect of waterproofing membrane is much better than that of concrete with waterproofing agent, if there is uneven settlement of the foundation, the waterproof layer made of concrete will lose its effect, and the ductility of waterproofing membrane is better, so the waterproofing membrane is better.

In order to prevent the waterproof layer of cement mortar from dehydrating in the early stage and producing some dry shrinkage cracks resulting in water seepage, it should be cured in time after the final setting of cement mortar (about 12 24h). (Exterior wall waterproofing agents, waterproofing coatings, kitchen waterproofing).

The maintenance of the waterproof layer of cement mortar is generally to adopt the method of natural curing, that is, under the natural conditions of temperature not less than 5, the method of watering, or watering covered with water-containing materials is used to keep the cement mortar wet, and the curing time is generally not less than 14 days.

When the cement mortar waterproof layer of the polymer fails to reach the hardened state, it must not be watered and cured or directly washed by rainwater, and the curing method of alternating dry and wet should be adopted after hardening, so as to solidify the polymer in a dry state. In a humid environment, it can be maintained under natural conditions.

The use of special cement, admixtures, admixtures and other waterproof mortar, maintenance should be carried out in accordance with the relevant provisions of the product.

The main ingredients are cement, some fine sand and stone. If it is 1kg of cement, you need to prepare 2kg of fine sand, of course, you need to add it according to the actual situation. In addition, there is a waterproofing agent, and the content of the waterproofing agent should account for about 100 kilograms of cement, and a kilogram of waterproofing agent should be added.

1. Waterproof mortar.

The lime-sand ratio is controlled, the water-cement ratio is less than or equal to, and the amount of waterproof agent powder accounts for the amount of cement. In order to ensure that the mixing is uniform, the cement and sand in the ratio of waterproofing agent powder and mortar should be stirred evenly first, and then water should be added.

2. Waterproof concrete.

The amount of waterproofing agent powder accounts for the amount of cement, and the concrete is mixed evenly, which is the same as the ordinary concrete construction method. In order to ensure that the mixing is uniform, cement, sand and gravel should be stirred evenly in the proportion of waterproofing agent powder and concrete, and then mixed with water.

<> main ingredient is cement, with some fine sand and stones. Select whether to add or not to add according to the actual situation. Waterproofing mortar is made by mixing ordinary cement mortar and waterproofing agent.

Among them, the proportion of waterproofing agent and fine sand should reach about 0.5 percent, and chloride needs to be added to cement mortar, and the proportion is generally between 3 percent and 5 percent. Different models of waterproofing mortar have different levels of water seepage, up to P10 level. If it is a special mortar, it is also necessary to add rubber powder to achieve the waterproof effect.

The waterproofing agent is an admixture that is mixed with people in the process of mortar waterproofing and concrete waterproofing concrete, and is used to reduce the water absorption of concrete or the permeability of water permeability under hydrostatic pressure by adjusting the concrete mix ratio, inhibiting or reducing porosity, changing pore characteristics, and increasing the compactness between the interfaces of various raw materials. Mortar waterproofing agent and concrete waterproofing agent is composed of dozens of organic and inorganic chemical substances mixed, dissolved, grinded, dispersed and compounded, each component has different functions, in the process of mixing concrete, after adding powdery, liquid or emulsion waterproofing agent, it can make concrete or mortar seepage, water absorption is reduced; Enhanced waterproofing or hydrophobicity. The waterproofing agent is suitable for the preparation of waterproof concrete or waterproof mortar, which is used in concrete projects such as basements, tunnels, roadways, water supply and drainage pools, and Shuili stations.

Concrete waterproofing agent is to penetrate the surface of concrete with its special small molecule structure, penetrate into the concrete for several millimeters and form a firm protective layer with it, thus greatly improving the waterproofness and comprehensive performance of concrete products.

According to the classification of (GB8075-87), concrete admixtures can be divided into four categories according to their main functions:

1. Admixtures to improve the flow and deformation properties of concrete mixture: including various water reducers, air entraining agents and pumping agents.

2. Admixtures to adjust the setting time and hardening performance of concrete: including retarder, early strength agent, quick-setting agent, etc.

3. Admixtures to improve the durability of concrete: including air-entraining agents, waterproofing agents, and rust inhibitors.

4. Other admixtures to improve the properties of concrete: including air entraining agents, expansion agents, antifreeze agents, colorants, waterproofing agents and pumping agents.

According to the nomenclature and definition of (GB8075-87) admixtures, admixtures can be divided into 16 names, each of which is customized as follows:

1. Ordinary superplasticizer: an admixture that can reduce the amount of water used for mixing under the condition that the collapse degree of concrete is basically the same;

2. Early strength agent: an admixture that accelerates the early strength development of concrete;

3. Retarder: an admixture that prolongs the setting time of concrete;

4. Air entraining agent: an admixture that can introduce a large number of evenly distributed, stable and closed tiny bubbles in the process of mixing concrete;

5. High-efficiency superplasticizer: an admixture that can greatly reduce the amount of water used in the mixture under the same condition of concrete collapse;

6. Early strength superplasticizing agent: superplasticizer with both early strength and water reduction functions;

7. Retarding superplasticizer: superplasticizer with both retarding and water reducing functions;

8. Air entrainment superplasticizer: an admixture with both air entrainment and water reduction functions;

9. Waterproofing agent: admixture that can reduce the permeability of concrete under hydrostatic pressure;

10. Rust inhibitor: an admixture that can inhibit or alleviate the corrosion of steel bars or other embedded metals in concrete;

11. Aerator: an admixture that releases gas due to chemical reaction in the process of concrete preparation, which can make the concrete form a large number of pores;

12. Expansion agent: an admixture that can make the volume of concrete expand to a certain extent;

13. Antifreeze: an admixture that can harden concrete at negative temperature and reach sufficient antifreeze strength within a specified time;

14. Colorant: an admixture that can prepare concrete with stable color;

15. Quick-setting agent: an admixture that can make concrete harden quickly;

16 Pumping agent: an admixture that can improve the pumping performance of concrete mixtures.

Concrete external additives include concrete waterproofing agent, at present, Tsinghua waterproof qhbq nano waterproof liquid material, can replace all external additives, a material can be mixed with a variety of external additives, quickly reduce the cost of external additives, so that the impermeability level of concrete reaches more than P20, and through professional proportioning to make concrete achieve the best workability.

Cement mortar waterproofing agent waterproof effect is good Hello Adhesion: Waterproofing agent has a strong adhesion to red bricks, various concrete, and other materials. Water resistance:

Through the strong physical and chemical action between the emulsion particles and the cement, the waterproofing agent inhibits or reduces the voids in the cement mortar, prevents the penetration of moisture into the world, and has strong waterproofness. abrasion resistance; The fatty acid waterproofing agent and mortar cement form a rigid waterproof layer limb, which has excellent wear resistance. antiseptic; The mortar waterproof layer has alkali resistance, corrosion resistance, and can prevent damage caused by climate and other factors.

Non-toxic; Fatty acid waterproofing agent, to solve the use of asphalt, tar and other solvent-based waterproof materials caused by the environmental pollution and harm to human health, Laoyer mortar waterproofing agent is pure, has passed the national disease control oral non-toxic identification.

Mortar is a raw material made by mixing cement and other materials with water, and cement can be used for wall building or caulking, there is a waterproof mortar, what is the specific formula? How does it differ from ordinary mortar?

1. What is the ratio of waterproof mortar?

1. Waterproof mortar is made by mixing ordinary cement mortar and waterproofing agent, which is mainly composed of cement, some fine sand, and stones will also be added. Of course, you need to add it according to the actual situation, or you can choose not to add it. In addition, there are waterproofing agents, in which the ratio of cement and fine sand should reach 2:

3. The content of waterproofing agent is about to be accounted for. Chloride also needs to be added to the cement mortar, and the proportion of chloride should generally reach between 3% or 5%.

2. There are also different models of waterproof mortar, such as M10 or M15, and its water impermeability level is also different, and the highest can reach P10 level. If it is an ordinary waterproof mortar, the waterproof effect can be achieved after adding a waterproofing agent. If it is a special mortar, it also needs to add rubber powder to achieve the waterproof effect, of course, the waterproof nature is more prominent.

2. What is the difference between waterproof mortar and ordinary mortar?

1. The composition of the two is different, if the waterproof mortar is also added with waterproofing agent, or there are some emulsifiers, etc., the waterproof effect can be achieved. And ordinary mortar is cement and water mixed evenly, and there is some gypsum in it, so the composition is very different.

2. The use is also different, if it is a waterproof mortar, generally speaking, it can be used for the painting of internal and external walls, especially for external walls, and the range is more extensive, including basements or water towers, because its waterproof performance is more prominent, including water conservancy and electrical engineering, because it has a waterproof effect, so it is widely used.

Ordinary mortar can generally be used for wall masonry or plastering, and the scope of use is limited.

Summary: If the waterproof mortar is configured, we need to match it according to the proportion of the strict base calendar, so that it can reach the waterproof level, because the waterproof mortar itself is still very different from the ordinary mortar.