Mortar reinforcing agent and preparation method thereof

Abstract

The invention provides a mortar reinforcing agent. The mortar reinforcing agent is prepared from the following raw materials in parts by weight: 2 to 10 parts of naphthalene water reducer, 0 to 50 parts of polycarboxylate superplasticizer, 10 to 20 parts of hydroxypropyl methyl cellulose, 10 to 40 parts of calcium silicate powder, 10 to 20 parts of HQS, 5 to 10 parts of calcium chloride, 0 to 50 parts of starch ether, 1 to 10 parts of polyacrylamide, 1 to 10 parts of polyvinyl alcohol powder, 1 to 5 parts of silane hydrophobic agent, 1 to 10 parts of cement reinforcing agent, 1 to 5 parts of mortar plasticizer, and 0 to 50 parts of calcium formate. By adopting the cement mortar reinforcing agent, the physical mechanical performance of mortar can be improved, and the water retaining performance and tensile adhesive strength of the mortar can be improved; since the water retaining rate is higher than the ordinary mortar, the water of the mortar is unlikely to absorb by the aerated concrete, the interface cement of the aerated concrete can be sufficiently hydrated, and the adhesive strength of the mortar and the aerated concrete can be improved, so that the cracking, bubbling and stripping problem of the mortar on the smeared surface of an aerated concrete building block can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of building admixtures, in particular to a mortar reinforcing agent and a preparation method thereof. Background technique [0002] At present, plastering, whitewashing and masonry mortar for construction are mixed with cement, sand and water. During the mixing process, the surface of cement particles contacts with water and begins to hydrolyze and hydrate, forming calcium silicate hydrate and calcium hydroxide, and these new organisms gradually coagulate, and their cohesion is far greater than the infiltration force of water on the interior of cement particles. Bio-agglomerates form aggregates and wrap around cement particles, retarding further hydrolysis and hydration of cement particles, and only a small part of the surface of cement particles has been hydrated, forming a "core" that is difficult to be hydrolyzed and hydrated inside. This leads to poor fluidity and workability of the mortar. In order to ...

AI Technical Summary

Problems solved by technology

This leads to poor fluidity and workability of the mortar. In order to obtain a suitable working degree during the construction process, it is not only necessary to increase the water consumption, but also to mix lime paste, microfoam, lime king or mortar king, etc. into the mortar. Admixtures to improve the fluidity and workability of mortar

[0003] Yet existing admixture more or less all has certain defect, as: lime paste is mixed in plastering, whitewashing or masonry mortar, quality problems such as popping, cracking, hollowing easily occur after a period of time; And Microfoam, Lime King, and Mortar King are mixed into the mortar to easily generate air bubbles, and there are air bubbles in the mortar, which reduces the strength of the mortar

Images