Concrete air entraining agent with stable structure

Abstract

The invention discloses a concrete air entraining agent with a stable structure. The concrete air entraining agent consists of the following raw materials in parts by weight: 1-1.8 parts of sodium hydroxide, 0.3-0.8 part of calcium lignosulphonate, 0.5-0.8 part of organic hydramine, 5-9 parts of rosin soap, 0.4-0.7 part of sodium acetate, 0.3-0.7 part of disodium cocoyl glutamate, 0.4-0.9 part ofsodium alkyl benzene sulfonate, 1.5-3 parts of sodium carboxymethylcellulose, 0.6-1.6 parts of sulfuric acid, 0.8-1.8 parts of ethylene glycol, 0.8-3 parts of an adhesive, 0.1-0.4 part of polyacrylamide, 0.6-1 part of a melamine sulfonate formaldehyde condensation product, 0.5-1.3 parts of bisphenol A, 0.1-0.4 part of calcium carbonate, 0.3-0.6 part of cellulose propyl sulfonate, 0.3-0.7 part of lauryl sodium sulfate, 0.2-0.7 part of sodium thiosulfate, 0.8-1.3 parts of maleic anhydride, 0.4-0.9 part of pentaerythritol and 0.2-0.7 part of sodium dodecyl benzene sulfonate. The concrete air entraining agent disclosed by the invention has the advantage that the freezing resistance, the salt marsh resistance, the impermeability, the sulfate corrosion resistance, the anti-alkali aggregate reaction properties, and the like of concrete are greatly improved.

Description

technical field [0001] The invention relates to the related technical field of building concrete, in particular to a structurally stable concrete air-entraining agent. Background technique [0002] Concrete air-entraining agent can effectively improve the workability of concrete, reduce the bleeding performance, and greatly improve the anti-freeze and anti-seepage performance of concrete. Concrete roads and bridges with ice and salt are especially important. In addition, fly ash is often used as an active admixture in the configuration of these concretes to improve the workability of fresh concrete and reduce the tendency of large-volume concrete to shrink and crack. However, it has been found that some fly ash with a high loss on ignition often reduces the air-entraining effect of the air-entraining agent because it contains unburned carbon particles. [0003] At present, there are many types of concrete air-entraining agents, including anionic active agents, cationic act...

AI Technical Summary

Problems solved by technology

However, the air-entraining agent of a single substance has great limitations and shortcomings in terms of performance, and cannot comprehensively improve the performance of concrete.

Some air-entraining agents with a single substance have a better air-entraining effect, but the air-entraining agents introduced are not delicate, uniform and stable microscopic bubbles. Such air-entraining agents will significantly reduce the strength and other properties of concrete; some air-entraining agents introduced with a single substance The quality of the air-entraining agent is good, but its air-entraining effect is average, and it cannot introduce enough tiny air-entraining agents. Such an air-entraining agent cannot significantly improve the durability of concrete