Alkali seepage-resistant enhanced back adhesive for stone materials

Abstract

The invention provides an alkali seepage-resistant enhanced back adhesive for stone materials. The back adhesive is formed by mixing a liquid component and a solid component; the liquid component comprises the following materials by weight: 15-35 parts of ethylene-vinyl acetate copolymer (EVA) emulsion or acrylic emulsion, and 0.5-3 parts of bactericide; the solid component comprises the following materials by weight: 3-8 parts of staple fiber, and 60-80 parts of powder material (one or combination of cement, quartz sand or powder, calcium carbonate sand or powder, wollastonite sand or powder, kaolin and zeolite powder). The back adhesive has the beneficial effects that addition of staple fiber avoids adhesive cracking and greatly improves strength; the addition of polymer emulsion achieves the effects of more firm adhesion, water resistance, and alkali seepage resistance, and effectively avoids stone diseases of whitening, water spots, alkali efflorescence, etc. The adhesive improves adhesion between stone material and cement floor, effectively avoids bulging problem, lowers cost, and simplifies construction process.

Description

technical field [0001] The invention relates to a stone adhesive, in particular to an enhanced anti-seepage alkali adhesive for stone. Background technique [0002] In the prior art, when the stone is wet-pasted with cement, during the cement curing process, the water carries the dissolved alkaline substances in the cement and volatilizes through the capillary pores or cracks of the stone, resulting in white alkali spots or discoloration (commonly known as back-alkali). , Baihua), resulting in stone lesions. In addition, in order to strengthen and strengthen the stone material, so as to facilitate stone material transportation, processing, installation, etc., the previous technology is to add back mesh glue and back mesh on the back of the stone. Before installation, in order to effectively bond with cement and avoid hollowing, the back mesh needs to be shoveled off. It is also necessary to use the back protection agent to prevent alkali seepage, anti-air drum, etc. The pro...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when the stone is wet-pasted with cement, during the cement curing process, the water carries the dissolved alkaline substances in the cement and volatilizes through the capillary pores or cracks of the stone, resulting in white alkali spots or discoloration (commonly known as back-alkali). , Baihua), resulting in stone lesions

In addition, in order to reinforce and strengthen the stone, so as to facilitate stone transportation, processing, installation, etc., the previous technology is to add back mesh glue and back mesh on the back of the stone. Before installation, in order to effectively bond with cement and avoid hollowing, it is necessary to shovel off the back mesh. It is also necessary to use the back protection agent to prevent alkali seepage, anti-air drum, etc. The process is very cumbersome and easily causes stone damage, which is not conducive to the rapid paste construction of stone