Why water reducer is the most important type of concrete admixture?
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Author : Lzh
Update time : 2023-02-06 12:03:15
What is water-reducing agent? Water-reducing agent is composed of the hydrophilic and hydrophobic groups. When the cement is mixed with water, there is no water-saving technology. Due to the role of molecular cohesion between the cement particles, the cement will form a storage structure, fall into the cement slurry, and add water-reducing agent, The water-mixing group of the water-reducing agent is directionally adsorbed on the cement. In addition, the water-reducing agent can also form a layer of a solvated water mill on the surface of the cement particles.
Water-reducing agent-sulfamate series superplasticizer The chemical name is aromatic aminosulfonate polymer, produced from sodium p-aminobenzenesulfonate and phenol as raw materials through addition and polycondensation to finally produce a large polymer with a certain degree of polymerization. Its water reduction rate is up to 30%, its cost is high, and it is easy to bleed. It is often used with naphthalene series superplasticizers, which can solve the compatibility problem of naphthalene series superplasticizers and cement.
Preparation of aminosulfonate series superplasticizer The synthesis process is to modify the aminosulfonate series water reducer through the condensation polymerization of the aminosulfonate water reducer with polyolefin compounds or catalytic grafting with other compounds, such as lignosulfonate. The aminosulfonate series water reducer modified by the condensation polymerization of polyolefin compounds combines the advantages of the two types of water reducers, which have good workability and early strength, but the raw materials are expensive; the production cost is on the high side. The graft copolymerization of lignosulfonate and sulfamic superplasticizer can reduce the production cost and improve the segregation and bleeding of sulfamic superplasticizer. For example, Yang Dongjie and others synthesized modified sulfamic superplasticizer ASM by grafting and copolymerization of sulfamic superplasticizer and lignosulfonate, reducing the production cost of sulfamic superplasticizer; at the same time, with the same dosage of amino sulfonic acid series superplasticizer, the bleeding rate is reduced, and the water reduction rate is increased. The concrete mixed with SAM meets the requirements of high-strength concrete in terms of slump loss and compressive strength.
Price of water-reducing agent Water-reducing agent particle size and purity will affect the product's price, and the purchase volume can also affect the cost of the water-reducing agent. A large amount of large amount will be lower. The price of the water-reducing agent can be found on our company's official website.
Water-reducing agent supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including water-reducing agents, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for a high-quality and cost-effective water-reducing agent, you are welcome tocontact us or inquire at any time.
