The high-efficiency waterproofing agent of the water-reducing agent manufacturer is composed of self-waterproof dense materials, naphthalene-based high-efficiency water-reducing agent and an appropriate amount of retarding and anti-segregation ingredients. As early as the 1940s, the development and research of lignin-based water-reducing agents and various water-reducing agents with equivalent effects have been developed. In the early 1960s, the second generation of high-efficiency water-reducing agents represented by naphthalene-based water-reducing agents Water additives came out, and in the 1980s, the third generation of high-performance water-reducing agents represented by polycarboxylic acid-based water-reducing agents appeared. As an ideal replacement product for second-generation water-reducing agents such as naphthalene series, the performance improvement of polycarboxylic acid-based high-efficiency water-reducing agents is comprehensive, and there is a qualitative leap in terms of water-reducing effect and technical performance. It can simultaneously solve the comprehensive properties of high water reduction, pumpability, slump loss over time of fresh concrete, and self-waterproofing of hardened concrete. It is a multi-functional and efficient pumping waterproof admixture, and an ideal admixture for solving various technical problems at the same time. Today I would like to briefly talk to you about their differences.
The aliphatic retarding high-efficiency water-reducing agent is a carbonyl pyroaldehyde synthesized by the sulfonation of acetone. The hydrophobic main chain is an aliphatic hydrocarbon-based high-efficiency water-reducing agent and an appropriate amount of retarding and reinforcing components. , with the functions of efficient water reduction, retardation, slump protection and reinforcement. The product has strong adaptability to cement, low dosage, and is easy to use. It is especially suitable for concrete projects that require efficient water reduction and retardation. The water reduction rate is 18% to 25%.
Lignosulfonate: This is a relatively common water-reducing agent. Its dosage is lignin. Most of its raw materials are substances extracted from coniferous trees and other tree species. This kind of After the water-reducing agent is mixed into the mortar, it can improve the fluidity of the mortar and enhance the coagulation force of the mortar. Its water-reducing rate is about 5 to 10 percent.
Naphthalene sulfonate water-reducing agent: This This kind of water-reducing agent is the earliest water-reducing agent used in my country. It is a product of naphthalene reacting with sulfuric acid and then fused with formaldehyde. It is a relatively special water-reducing agent. This water-reducing agent can present powdery objects of different colors from light to dark according to the visibility. It is highly water-soluble and has a good dispersing effect on a series of powdery building materials such as cement. The water-reducing rate is higher than that of lignin. An increase of about ten percent.
Polycarboxylic acid-based high-performance water-reducing agent: It can be seen from the length of the name of this water-reducing agent that it is by no means an ordinary water-reducing agent. This water-reducing agent is the latest development with the highest scientific and technological content. , a kind of water-reducing agent with the strongest comprehensive performance. This water-reducing agent is a product made of a rare chemical substance mixed with other additives. Compared with other water reducing agents, its comprehensive performance and technical indicators are all at an excellent level.
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