What is the role of concrete water reducer?

1. What is concrete admixture

Concrete admixture is an admixture added during concrete mixing, mainly to improve the performance of concrete. From the point of view of the proportion of additives, generally no more than 5%. Although the content is relatively small, it has played a positive role in improving the performance of concrete and has become an indispensable part of concrete development. The admixtures used in concrete mainly refer to different types of water reducers. The wide application of concrete admixtures has greatly improved the shortcomings of poor concrete strength, strong brittleness, and heavy weight. , Improve the applicability of concrete construction.

2. Performance analysis of commonly used concrete water-reducing agents

Water reducing agent is mainly to ensure the workability of concrete on the basis of ensuring the reduction of water consumption. Or improve the workability of concrete without changing the water consumption. The water reducing agent can improve the strength and deformation ability of concrete, and at the same time help to improve the anti-seepage ability, will not corrode the steel bar, and is beneficial to the anti-rust treatment of the steel bar. Water-reducing agents can be divided into ordinary water-reducing agents and high-efficiency water-reducing agents.

The influence of superplasticizer on concrete performance mainly includes the following aspects

(1) The performance of fresh concrete. For the water reducing effect of the superplasticizer, the molecular size and specific structure type of the superplasticizer should also be considered. The aeration effect of water reducer is affected by surface tension. In terms of concrete setting time, naphthalene and melamine can advance the setting time of concrete, and sulfamic acid water reducer can slow down the setting time. Cement, but through the use of superplasticizers, segregation and bleeding can be reduced. By adding a superplasticizer, the slump of concrete can be improved. The specific collapse time and extent are determined by the type and quantity of water reducing agent used.

(2) Influence on the hardening performance of concrete. Adding superplasticizer can increase the hydration degree of cement and comprehensively improve the compressive and flexural strength of concrete. The superplasticizer can also reduce the value of concrete by changing the shrinkage rate.

(3) Influence on the durability of concrete. The superplasticizer has a high water reduction rate and a small amount of entrained air, which can effectively improve the freeze-thaw resistance of concrete. The superplasticizer can effectively improve the freeze-thaw resistance of concrete. The ability of concrete to resist sulfuric acid corrosion. The test results show that the corrosion resistance of sulfuric acid is no worse than that of rough concrete.

(4) The influence on the corrosion of steel bars. The concrete with high-efficiency water-reducing agent adheres well to the steel bar, and the 7-day bonding force between the straight sliding steel bar and the concrete increases from 1.2mpa to 8.5mpa. The bonding force between bent steel bars and concrete can be increased from 15 MPa to 27.5 MPa within 7D. Experiments show that the plasticized reinforced concrete with superplasticizer has almost no corrosion to the steel bars after 4 years of static treatment. Therefore, the superplasticizer can effectively protect the steel bars in the concrete.

Overview of polycarboxylic acid water-reducing agent concrete water-reducing agent

Polycarboxylic acid superplasticizer is a powdered polycarboxylic acid superplasticizer prepared by a new process.It has excellent comprehensive index, good dispersibility,high water reduction rate,good adaptability to various cements,and no pollution to green.High-performance environmentally friendly products.

Performance of polycarboxylate superplasticizer

The polycarboxylic acid superplasticizer powder of this product accounts for 0.16-0.3% of the total amount of gelling materials, and the water reduction rate is> 25%.

Polycarboxylic acid superplasticizer does not contain harmful ingredients and does not pollute the environment. No chlorine,low alkali.

Product advantages

1.It has good compatibility with various cements, and the slump retention performance of concrete is good, which prolongs the construction time of concrete.

2.Low dosage, high water reduction rate and small shrinkage.

3.Significantly improve the early and late strength of concrete.

4.This product has low chloride ion content and low alkali content, which is conducive to the durability of concrete.

5.The production process of this product is pollution-free and does not contain formaldehyde. It conforms to the ISO14000 international standard for environmental protection management and is a green and environmentally friendly product.

6.Using polycarboxylate type water reducing agent, more slag or fly ash can be used to replace cement, thereby reducing costs.

Polycarboxylic acid water reducer concrete water reducer application

Polycarboxylic acid superplasticizers are mainly used in ready-mixed dry mortar and unshaped refractory materials,including cement-based non-shrinking self-leveling materials,cement-based non-shrinking grouting materials,pore pressure grouting,emery wear-resistant flooring,etc.;Used for self-compacting concrete with high fluidity.

Polycarboxylate Superplasticizer (Polycarboxylate Superplasticizer) is a high-performance water-reducing agent and a cement dispersant in the application of cement concrete.It is widely used in highways,bridges,dams,tunnels,high-rise buildings and other projects.

The product is environmentally friendly,non-flammable,non-explosive,and can be safely transported by trains and cars.

It is suitable for precast and cast-in-place concrete,reinforced concrete and prestressed concrete for high-speed railways,passenger dedicated lines,industrial and civil buildings,roads,bridges,ports,airports,and other projects.

It is especially suitable for projects that require a long construction time for preparing concrete and high requirements for maintaining concrete slump, such as nuclear power projects.

The price of polycarboxylic acid water reducer concrete water reducer

The price of polycarboxylic acid water-reducing agent concrete water-reducing agent will vary randomly with the production cost,transportation cost, international situation,and the market supply and demand of polycarboxylic acid water-reducing agent concrete water-reducing agent.Tanki New Materials Co. Ltd aims to help all industries and chemical wholesalers find high-quality,low-cost nanomaterials and chemicals by providing a full set of customized services.If you are looking for polycarboxylic acid water reducer concrete water reducer,please feel free to send an inquiry to get the latest price.

Suppliers of polycarboxylic acid water reducer in concrete water reducer

As a global polycarboxylate water-reducing agent concrete water-reducing agent supplier,Tanki New Materials Co. Ltd has extensive experience in the performance,application and cost-effective manufacturing of advanced and engineering materials.The company has successfully developed a series of powder materials (including water-based stearic acid emulsion,water-based calcium stearate,zinc stearate,etc.),high-purity targets,functional ceramics and structural devices,and provides OEM services.