Why can water-reducing agent improve the fluidity of concrete mixture?
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Author : Lzh
Update time : 2023-02-06 12:18:23
What is water-reducing agent? Water-reducing agentis the most important type of concrete admixture. According to its water-reducing rate, it can be divided into ordinary water-reducing agents (represented by lignosulfonate), high-efficiency water-reducing agents (including naphthalene series, melamine series, sulfamate series, aliphatic series, etc.) and high-performance water-reducing agent (represented by polycarboxylic acid series high-performance water-reducing agent). In 2007, the total output of various water-reducing agents was about 2.8454 million tons, of which the average water-reducing agent was 1.751 million tons, accounting for 6.2%; High-efficiency water-reducing agent is 2.256 million tons, accounting for 79.3%; High-performance water-reducing agent is 414300 t, accounting for 14.6%. The high-performance water-reducing agent has certain air entrainment, a high water-reducing rate, and good slump retention performance. Compared with other water-reducing agents, the high-performance water-reducing agent has obvious technical advantages and high-cost performance when preparing high-strength and high-durability concrete.
Preparation of water-reducing agent-polycarboxylic acid series high-performance water-reducing agent Post-polymerization functionalization method First forms the main chain and then introduces the side chain. Generally, the existing polycarboxylic acid with known molecular weight is used for esterification with polyether under the action of a catalyst at a higher temperature. The problem with this method is that the compatibility of polycarboxylic acid and polyether is not good, and the phase separation of water generated in the esterification process is difficult. Therefore, selecting a polyether with good compatibility with polycarboxylic acid becomes the synthesis key.
Application status of water-reducing agent-polycarboxylic acid series high-performance water-reducing agent Polycarboxylic acid series high-performance water-reducing agent was developed in Japan in the mid-1980s. It was applied to concrete engineering in 1985 and was widely used in the 1990s. By the end of 1998, Japanese polycarboxylic acid series products had accounted for more than 6010 of all high-performance water-reducing agent products, and its consumption accounted for more than 9010 of the high-performance water-reducing agent. In recent years, North American and Europe countries have also launched a polycarboxylic acid series, high-performance water-reducing agent products. For example, Grace's A<1v a series and M BT's the.
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 usor inquire at any time.
