Wet-mixed mortar modifier

Abstract

The invention provides a wet-mixed mortar modifier. Every 1,000 parts of the wet-mixed mortar modifier comprises 15-20 parts of sodium tripolyphosphate, 1-2 parts of sodium hexametaphosphate, 4-5 parts of phosphonobutane tricarboxylic acid, 32-44 parts of glucose, 24-33 parts of citric acid, 50-80 parts of zeolite powder, 80-100 parts of silica fume, 200 parts of heavy calcium carbonate, 10-15 parts of starch ether, 20-40 parts of hydroxyethyl methyl cellulose ether, 1-2 parts of sodium dodecyl sulfate, 28-50 parts of a polycarboxylate superplasticizer, 20-25 parts of a polycarboxylate slump retaining agent, 40-80 parts of a naphthalene-based superplasticizer, 20-25 parts of redispersible latex powder, 8-10 parts of beta-cyclodextrin and the balance of fly ash. The plasticity-maintaining time of the wet-mixed mortar modifier is prolonged to 36 h, the later strength and bondability of the wet-mixed mortar are improved simultaneously, the mortar durability is improved, the problems of high probability of hollowing, cracking, leaking and the like of plastering mortar are solved, and the wet-mixed mortar modifier has low energy consumption and is free of chemical and radioactive contamination.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a modifier for wet-mixed mortar. Background technique [0002] Wet-mixed mortar refers to the mixture of cement, sand, mineral admixtures, additives and water in a certain proportion after being measured and mixed in a professional production plant, transported to the place of use, and used within a specified time. Wet-mixed mortar can minimize dust pollution during mortar production, transportation, and use. Combined with mechanical construction, it can greatly improve construction efficiency and shorten the construction period. However, mortar construction is different from concrete, which requires manual or mechanical layer-by-layer construction, so that wet-mixed mortar needs to be stored at the construction site for a certain period of time. The length of time mainly depends on the number of mortar construction teams, construction efficiency, and construction afte...

AI Technical Summary

Problems solved by technology

[0009] The main component of the water reducer of the two-component liquid wet-mix mortar modifier is a polycarboxylate water reducer, which is easily absorbed by the clay with a high content in the sand, thus affecting its water reducing effect on cement hydration. poor adaptability