Different Water reducing agents

With the rapid development of our country industrial and civil construction, the concrete application is more and more widely used in the construction. The brand as well as the kind of admixture and many USES is becoming more and more widely. But from the mixture ratio design method to differentiate, only divided into water-based additive and the outside water reduction agent, reduction and compound admixture three categories.

Reduce water admixtures such as water reducing agent, high efficiency water reducing agent, the reduction of water admixtures such as air-entraining agent, early strength agent, anti-rust agent, expansive agent, etc., before the compound water reducing agent is of two kinds of synthesis. Such as: high water reducing agent, retarded water reducing agent, etc.

Water reducing agent are divided into common water reducing agent and high efficiency water reducing agent. Ordinary water reducing can be divided into (1) department of lignin water-reducer (lignin sulfonic acid salts, wood calcium magnesium, wood, wood sodium, etc.) (2) humic type (3) sugar mill type (4) extract and waste residue extraction material, etc.

Its main function is:

(1) under the condition of concrete workability and strength of the same, can save 5% - 6% cement.

(2) on the workability of concrete and the cement dosage of the same conditions, not can reduce water consumption by about 10%, concrete strength increased by 5% - 6%.

(3) in concrete under the constant water usage and dosage of cement, concrete can increase the liquidity.

High efficiency water reducing agent can be divided into:

1) polycyclic aromatic sulfonate (sulfonated coal tar water reducing agent)

(2) water soluble resin sulfonate (sulfonated melamine resin, sulfonated kumar lung resin)

Main functions:

(1) in guarantee under the constant workability of concrete and the dosage of cement, reduce water consumption by about 15%, concrete strength increased by 20% to the left.

(2) under the condition of the water concrete and cement unchanged, can greatly improve the concrete mixing liquid.

(3) under the condition of invariable water cement ratio, can save water by 10% - 20%.

The above introduction, you can see that more is to add water reducing agent in the concrete engineering is to achieve three purposes.

(1) improve the strength of the concrete

(2) the strength of the cement saving