Concrete water evaporation inhibitor with shrinkage function and preparation method thereof

Abstract

The invention discloses a concrete water evaporation inhibitor with a shrinkage function and a preparation method thereof. The inhibitor is prepared from the following components in percentage by weight: 0.1-10 percent of an amphiphilic compound, 0.2-5 percent of a non-ionic surfactant with a concrete shrinkage reducing function, 0.2-5 percent of an anionic surfactant and the balance of water. A stable amphiphilic compound emulsion is prepared under the synergic action of a nonionic emulsifier having a concrete shrinkage reducing function and an anionic emulsifier. When the inhibitor is applied to a plastic stage concrete surface, the water evaporation of plastic stage concrete can be reduced effectively (the water evaporation of plastic stage concrete can be reduced by over 80 percent in maximum), and the shrinkage of hardened concrete can be effectively reduced simultaneously (the shrinkage can be reduced by 20 percent in maximum). The concrete water evaporation inhibitor has the advantages of simple preparation process, stable performance, convenience for field use, and the like.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a concrete water evaporation inhibitor with shrinkage reduction function and a preparation method thereof. The system can not only greatly reduce the water evaporation on the concrete surface in the plastic stage, but also effectively reduce the shrinkage of hardened concrete. Background technique [0002] The rapid water evaporation in the plastic stage of concrete is not only an important reason for the plastic cracking of concrete, but also an important factor that causes phenomena such as crusting, stickiness, and ash on the concrete surface. How to start from the early stage of construction, that is, when the concrete is still in the plastic stage, greatly reduce the water evaporation on the concrete surface, maintain the plastic state of the concrete, and reduce the plastic cracking of the concrete, which is an urgent problem in construction. [0003] At present, the rapid water eva...

AI Technical Summary

Problems solved by technology

At present, an important method to solve concrete shrinkage in engineering applications is to add shrinkage-reducing admixtures, but due to the high price of this type of admixtures, its further promotion is limited.

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