Special moisture-holding thickening agent for masonry mortar and production method thereof

Abstract

The invention relates to a special moisture-holding thickening agent for masonry mortar and a production method thereof. The special moisture-holding thickening agent is composed of a moisture-holding thickening component, a water reducing component and an enhancing component, wherein the moisture-holding thickening component is prepared from the following materials in parts by weight: 17-22 parts of desulfurized gypsum, 45-55 parts of secondary fly ash and 25-35 parts of hydroxypropyl methyl cellulose; the water reducing component is prepared from 15-25 parts of wood celluloses in parts by weight; and the enhancing component is prepared from the following materials in parts by weight: 18-22 parts of carbide slag, 7-13 parts of calcium lignosulphonate, 750-830 parts of fine sand and 57-63 parts of primary fly ash. Through applying the special moisture-holding thickening agent to masonry mortar, the adhesiveness and bonding strength between a pressed concrete brick and masonry mortar can be improved, the purposes of reducing the overall shrinkage of a pressed concrete brick masonry and improving the shearing strength of the masonry are achieved, and the problem that micro-cracks appear on wall bodies because the binding power between a pressed concrete brick and masonry mortar is poor can be solved.

Description

technical field [0001] The invention relates to building materials, in particular to a special water-retaining thickener for masonry mortar and a preparation method thereof. Background technique [0002] In accordance with the "Land Administration Law of the People's Republic of China" and other relevant laws and regulations and the requirements of the overall planning of land use, my country strictly controls the scope and scale of soil borrowed by clay brick production enterprises, and it is strictly forbidden to occupy cultivated land to build kilns or borrow soil from cultivated land without authorization. It is forbidden to supply land for new construction, reconstruction, and expansion of solid clay brick production projects, and to restrict land supply for hollow clay product production projects. The original brick kilns are gradually being phased out, and the output of clay bricks is decreasing year by year. There is an urgent need for new building materials to fill ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a special water-retaining thickener for masonry mortar and its production in view of the problems of poor bonding between pressed concrete bricks and ordinary masonry mortar, low masonry shear strength and possible micro-cracks in the wall. method