Concrete waterproof compacting agent

Abstract

The invention discloses a concrete waterproof compacting agent, and belongs to the field of building material additives. According to the present invention, silicon grease rock and a macromolecular component are combined to form a hydrophobically-associated double cross-linked hydrogel component, such that the internal mechanical strength is stably increased while the product has self-repairing property, the internal dispersion of the system is improved, the shrinkage degree of concrete can be controlled to a certain extent, and the occurrence of cracking can be avoided; with the application of the concrete waterproof compacting agent in concrete, the concrete waterproof compacting agent is mixed with water to produce heat release effect so as to promote the compacting agent component to generate the solid-solid phase transformation, such that the shrinkage rate cannot be increased too much; by combining with the filling effect of calcium carbonate particles generated by calcium ions,the compacting effect is improved; through the synergistic action, the stable nano-emulsion is formed so as to increase the contact angle with concrete and avoid cracking while achieve water resistance, shrinking and compacting; and with the concrete waterproof compacting agent of the present invention, the problem that the currently used concrete waterproof compacting agent has poor waterproof effect, and easily causes increased concrete shrinkage rate and concrete cracking after the use can be solved.

Description

technical field [0001] The invention belongs to the field of building material additives, in particular to a concrete waterproof compacting agent. Background technique [0002] With the increase of modern concrete engineering quantity and the shortening of engineering period, some problems are inevitably exposed, such as some dams and bridge decks have penetrating cracks within 2~3 days after pouring, and many cast-in-place beams and slabs Different degrees of cracks appeared within 6~12 hours after the formwork was removed or even poured. The cracks were mainly caused by non-stress deformation such as temperature stress and concrete shrinkage. Among them, early cracking of concrete is particularly important, because late cracking develops and evolves after the durability of concrete is damaged by external forces (load, external environment erosion, etc.) on the basis of early cracking or early potential cracking. Therefore, reducing the risk of concrete cracking by control...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a concrete waterproof compacting agent for the poor waterproof effect of the commonly used concrete waterproof compacting agent, which is easy to cause the increase of concrete shrinkage and cracking after use.