Multifunctional cement concrete reducing and anti-cracking curing agent

Abstract

The invention provides a multifunctional cement concrete reducing and anti-cracking curing agent, relating to the functional curing agent and reducing agent in the cement concrete admixture. The multifunctional cement concrete reducing and anti-cracking curing agent is composed of reducing compound, penetrant aid, film forming material, film forming material aid and water. The multifunctional cement concrete reducing and anti-cracking curing agent has good reducing and anti-cracking function and obviously increases the early strength of the cement concrete and increases the late strength to some extent, less dosage, good economic return and prevents the compatibility problem with the other additive. The multifunctional cement concrete reducing and anti-cracking curing agent is widely used for pouring component of cement concrete, road-surface maintenance, wall maintenance, thin-walled member or the other work.

Description

technical field [0001] The invention belongs to the technical field of cement concrete, and relates to a functional curing agent and a shrinkage reducing agent of cement concrete admixtures. Background technique [0002] The shrinkage of concrete and the resulting cracking is a persistent problem of concrete engineering quality, and it is also a problem that has been concerned by the academic and engineering circles. The high-performance concrete (HPC) and high-strength concrete (HSC) developed in recent years are characterized by low water consumption, large cement consumption, and the addition of reactive admixtures, so early cementitious materials hydrate very quickly , leading to the rapid consumption of free water inside the concrete, and self-drying while the internal structure is dense, increasing the possibility of shrinkage and cracking of the concrete. The cracking of concrete can be controlled and reduced by strengthening curing and adding admixtures, among which...

AI Technical Summary

Problems solved by technology

The main disadvantages of this curing agent are: single function, only water retention, poor effect on concrete reinforcement

[0004] Shrinkage reducing agent is an admixture to control and reduce concrete shrinkage. Although the use of existing concrete shrinkage reducing agent has obvious shrinkage reduction and anti-cracking effects, it has a large dosage and high price, which has an adverse effect on concrete strength. The capacity is not good, which affects the setting time of concrete and the slump and air content of concrete.

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