What exactly is a concrete water-reducing admixture?

Water reducing agent is to reduce the dosage of water. There is no reduction in concrete dosage. Its functional mechanism is: During the mixing process of concrete with water, due to the two components with different charges in the concrete minerals, the positive and negative charges interact with each other to cause the concrete to form a flocculation structure. In this case, this kind of structure will also be formed by the thermal transport of concrete particles in the liquid, causing some of their edges and corners to collide and move with each other. This kind of flocculation structure contains a lot of mixing water, so it cannot provide more water for concrete hydration, thus reducing the workability of fresh concrete. Therefore, in order to hydrate the concrete better at the construction site, a large amount of water must be added. However, water reducing agents can drain the water out of the flocculation structure and reduce the water dosage.

Concrete water-reducing agent is the second generation of performance mode water-reducing agent that has been transformed after the general water-reducing agent represented by lignocalcium and the high-efficiency water-reducing agent represented by naphthalene series. It is a modern This high-efficiency water-reducing agent is a new trend in the world, has the largest technological content, has the most suitable application prospects, and can comprehensively maximize profits.

It refers to the ability to reduce the mixing water demand and improve the rebound of concrete without changing the workability and concrete dosage standards; or to save concrete without changing the workability and strength standards. Dosage of water reducing agent. According to its water-reducing and increasing potential, it is divided into general water-reducing agents (also known as plasticizers) and high-efficiency water-reducing agents (also known as superplasticizers), and they are further divided into first-class products and qualified products. According to the constituent materials, it is divided into: (1) water-based sulfonate salts; (2) polycyclic alicyclic salts; (3) water-soluble resin sulfonate salts. Generally, water reducing agents should be used in concrete with a daily minimum temperature of about 5℃ for decoration projects. High-efficiency water-reducing admixtures are suitable for use in decoration projects where the daily minimum temperature is around 0°C, and are suitable for large-flow concrete, high-strength concrete, and steam-cured concrete. At this stage, the common types of water-reducing agents on the market are: naphthalene series high-efficiency water-reducing agent, aliphatic high-efficiency water-reducing agent, amino rate-limiting performance mode water-reducing agent, water-reducing agitation agent, tritose sodium, wood fiber Sodium sulfonate, lignocellulose sulfonate, swelling agent, etc.

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