Novel sculpture mortar dry powder and preparation method thereof

Abstract

A novel sculpture mortar dry powder and a preparation method thereof, the novel sculpture mortar dry powder comprises 58-70 parts of Yellow River sand, 30-40 parts of cement, 17-27 parts of fly ash, and 0.9-1.9 parts of a self-made binder, and the preparation method comprises the following steps: S1, dissolving polyvinyl alcohol in 6-8 times by weight of water, adding a 30% hydrogen peroxide solution, carrying out a stirring reaction for half an hour, adding dextrin water slurry, carrying out a stirring reaction for half an hour, and carrying out a stirring reaction for half an hour; carrying out spray drying to obtain dextrin modified polyvinyl alcohol particles; s2, adding methyltrimethoxysilane into water of which the weight is 10-15 times that of methyltrimethoxysilane, stirring and dissolving, adjusting the pH value to 2-3, heating to 40-50 DEG C, hydrolyzing for 10-15 hours to obtain a cross-linked solution, adding hydroxypropyl methyl cellulose, stirring and uniformly mixing, and spray-drying to obtain silane modified hydroxypropyl methyl cellulose; and S3, uniformly mixing the products obtained in S1 and S2 according to the mass ratio of (10-15): 1 to obtain the self-made adhesive. The stone-like and wood-like products prepared from the sculpture mortar have the advantages of convenience in operation, good workability, few cracks, stable quality and the like while raw materials are saved and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a novel sculpture mortar dry powder and a preparation method thereof. Background technique [0002] Sculpture mortar is a cement-based thixotropic sculpture material, which belongs to ready-mixed dry mortar. It is a dry powder pre-mixed according to a certain proportion of cement, mineral aggregate, lightweight aggregate, functional additives and pigments. When used, it is packaged to the construction site and used directly after adding water and stirring. At present, the aggregate quartz sand commonly used in sculpture mortar is mostly quartz particles that are processed by crushing quartz stone. On the one hand, the acquisition of quartz sand needs to be crushed and processed, which invisibly increases the cost of sculpture mortar. On the other hand, quartz The massive collection of stones also has a negative impact on the environment, and facing a shortage of resou...

AI Technical Summary

Problems solved by technology

However, due to the high mud content and high water absorption of the Yellow River ultra-fine sand, it is easy to cause cracking of the sculpture, which does not meet the requirements of the sculpture in principle, and there is no technology to solve this problem at present