Light anti-cracking plastering mortar

Abstract

The invention provides light anti-cracking plastering mortar, and relates to the technical field of building materials and construction. The light anti-cracking plastering mortar comprises, by weight, 20-30% of ordinary Portland cement, 20-30% of graded sand and stone, 3-15% of glazed hollow beads, 5-25% of ground calcium carbonate powder, 0.1-0.5% of modified polyoxyethylene, 0.01-0.2% of modified cellulose ester water retaining agent, 0.05-0.1% of anti-cracking fiber, 0.3-0.5% of inorganic bentonite, 0-0.01% of sodium dodecyl benzene sulfonate and 0.1-0.2% of powder shrinkage reducing (PSR) agent. By means of the light anti-cracking plastering mortar, the construction performance and crack resistance of the mortar are obviously improved; the light anti-cracking plastering mortar has good heat preservation and sound insulation effects; raw materials can be easily purchased, the production process is simple, mechanized construction is achieved, market application prospects are wide, and the light anti-cracking plastering mortar has the social significance of the refined synergism effect on building energy conservation materials.

Description

technical field [0001] The invention relates to the field of building materials and construction technology, in particular to a lightweight crack-resistant plastering mortar. Background technique [0002] Autoclaved aerated concrete blocks are made of siliceous and calcareous materials as the main raw materials, aluminum powder as the gas-generating agent, mixed with water to form a slurry, cast into shape, and made by pre-curing, cutting, autoclaving and other processes. porous silicate blocks. Because of its light weight, good waterproof, sound insulation, heat insulation, thermal insulation and other unparalleled properties, it has been widely used in building exterior walls, interior partitions and roofs. The use of such blocks is becoming more and more widespread. During the construction process, the thin grout dry masonry process was adopted, and the wall surface has high flatness, which meets the effect of thin plastering construction. However, the traditional plast...

AI Technical Summary

Problems solved by technology

During the construction process, the thin grout dry masonry process was adopted, and the wall surface has high flatness, which meets the effect of thin plastering construction. However, the traditional plastering mortar has poor construction performance on this kind of block, and the bonding strength with the block is low and after drying Easy to crack, seriously affecting the quality of construction