Organic composite concrete antifreeze

Abstract

The invention relates to an organic composite concrete antifreeze, which is mainly composed of an organic acid, an amide compound, a polyol, an organic ketone, triethanolamine and the like. The organic composite concrete antifreeze is high in durability, good in fluidity, environmentally friendly and pollution-free, can greatly increase the temperature of concrete critical strength, and exerts an action of preventing concrete from freezing damage.

Description

technical field [0001] The invention relates to an organic compound concrete antifreeze agent, which belongs to the field of concrete building materials. Background technique [0002] In recent years, with the rapid development of concrete engineering, the quality problems caused by concrete winter construction problems have become increasingly prominent. This is mainly due to the difference between the temperature of concrete and the outside air temperature, and heat exchange will occur between the concrete and the ambient temperature. When the ambient temperature is very low When the temperature is lowered, this heat exchange will quickly reduce the temperature of the concrete. For fresh concrete, the speed of temperature reduction determines the size of the hydration temperature. The faster the temperature drops, the slower the increase in concrete strength. When the concrete is over After being frozen earlier, the strength will no longer increase, the higher the free moi...

AI Technical Summary

Problems solved by technology

[0003] Antifreeze is an admixture to solve concrete construction in winter. It can effectively reduce the freezing point of water and promote the strength growth of concrete and mortar under negative temperature conditions. According to the current domestic and foreign reports, antifreeze is mainly chlorine salt. , nitrite, nitrate, carbonate, etc., and their compounds. In other words, the current antifreeze is mainly some inorganic salts and their compounds. The effect is good, but it has different degrees of adverse effects on the durability of concrete; for example, chloride ions cause steel bar corrosion, sodium ions cause alkali aggregate reaction, and at the same time, the addition of a large amount of inorganic salts, especially nitrite, has great Strong toxicity, pollution to buildings and the surrounding environment, the current development trend of concrete worldwide is developing towards high strength, high durability, high fluidity and non-polluting green concrete, therefore, changing the current common use of inorganic salts The status quo of antifreeze has a very positive meaning