Beijing Dongke United Technologies Co.,Ltd.

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Polycarboxylic acid superplasticizer water reducing agent manufacturer

Polycarboxylic acid high performance water reducing agent The Dongke Group is a specialized manufacturer of water reducing agents. For reference, specific information on high performance polycarboxylated water reducing agents and water reducing agents for concrete additives is provided below. As an additive for concrete, the reducing agent of water is an indispensable raw material.

First, you need to understand what a water reducer is. A water reducing agent is a material that increases workability without increasing the water content of freshly mixed mortar or concrete or maintains workability with a small amount of water.

PCE High Performance Water Reducer is a manufacturer of composite polyester carboxylate water reduction solutions. The use of high performance water reducing agents (high quality water reducing agents) has become a very common practice. Mix the dry mortar. Excellent dispersion capacity. Reactive macromer.

Water reducing agents are special chemicals added before the concrete mix is ​​poured. They belong to the same product family as retarders. The first class of water reducing agents is lignosulfonate, which has been used since the 1930s. These cheap products originated from the wood and paper industry, but are now being replaced by other synthetic sulfonates and polycarboxylates, also known as high-performance water reducing agents.

Water reducing agents offer numerous benefits in their use, as illustrated below.

1. Reduces water content by 5-10%

2. Reduce the porosity of the concrete

3. Increases the strength of concrete by up to 25% (because less water is required for the concrete mix to function)

4. Improve workability (assuming a constant amount of free water)

5. Reduces permeability (because less water is used)

6. It reduces the diffusion of abrasive substances in the concrete and increases the durability of the concrete

7. Improve surface quality (for all of the above)

Many important properties of concrete are affected by the ratio (density) of water used in the mixture and cementious material (g / cm). Reducing the amount of water increases the density of the cement paste and improves the quality of the paste. High quality mastic, high compressive and tensile strength, low permeability, excellent resistance to surface cracks, excellent bond between concrete and stability, excellent volume change due to drying and wetting is low, tendency to decrease due to reduction of cracks (PCA, 1988).

Reducing the water content of the concrete mix must be done in order to achieve a complete hydration process of the cement and to maintain the proper functioning of the concrete for position and stability during construction. G / cm needed for cement to complete the hydration process varies between 0.22 and 0.25. Additional water should be added to the mixture to assist in drying and finishing (perfect performance) of concrete. Decreasing the water content of the dough can make the dough harder, less functional and can lead to position problems.

High performance thinners, retarders and thinners are additives for concrete and are added to reduce the water content of the mix and slow down the speed of setting of the concrete while maintaining the fluidity of the concrete mix. Additives are used to alter the properties of concrete and mortar to make it suitable for other purposes such as crafts and mechanical energy saving.

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