Hydration heat regulation composition, as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of concrete admixtures, and particularly relates to a hydration heat regulation composition, as well as a preparation method and application thereof. The hydration heat regulation composition provided by the invention is mainly prepared from a cationic-type acrylic resin, an amino resin, epoxy phosphate, tartaric acid and modified diatomite. According to the prepared hydration heat regulation composition, the release of hydration heat can be effectively inhibited, and hydration speeds in different stages during a cement hydration process can be regulated and controlled at different degrees, so that an effect of reducing the total heat release at an early stage is achieved; meanwhile, the production of hydration heat can be continuously reduced,the phenomenon of concrete cracking can be effectively reduced, and the durability and the safety of concrete components are improved.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, and in particular relates to a hydration heat regulating composition and a preparation method and application thereof. Background technique [0002] Concrete, as the most widely used building material, has been widely used in industrial and civil buildings as well as in major projects. The biggest disadvantage of concrete is that it is prone to cracks, which affects its durability. Although the factors that cause concrete cracking include plastic shrinkage, dry shrinkage, temperature influence and other aspects, in recent decades, it has been found that the temperature deformation caused by the heat release of cement hydration has become the leading cause of concrete cracking. Cement hydration will release a lot of heat. When the heat released by cement hydration in concrete is too late to dissipate, the internal temperature of concrete will rise, and when the hydration stops later, ...

AI Technical Summary

Problems solved by technology

[0007] However, the reduction of the central temperature of concrete with heat of hydration inhibitors is proportional to the reduction of strength. Although the current heat of hydration inhibitors play a role in cooling, they also reduce the strength of concrete.

Moreover, most of the hydration heat control materials are made of starch or dextrin materials through hydrolysis or high-temperature gelatinization modification, and their hydration temperature rise control performance in actual concrete structures can only control the induction period of hydration heat release. It has poor effect on the late hydration exothermic reaction period, which greatly reduces the durability of concrete