Polymer cement waterproof thermal insulation mortar

Abstract

The invention discloses a polymer cement waterproof thermal insulation mortar used on external walls of buildings. A waterproof thermal insulation material and the like are added in the preparation of the mortar. Each 300 grams of the mortar comprises the following main materials by mass: 100 grams of ordinary portland cement, 20 grams of secondary fly ash, 20 grams of 200-mesh hydrated lime, and150 grams of 50 to 70-mesh vitrified micro-beads with the dry density of 110 kg / m3; the mortar comprises the following additives mixed with the 300 grams of the main materials by mass: 6 to 9 grams of re-dispersible polymer rubber powder, 1 to 4 grams of methyl cellulose ether, 0.4 to 1.0 gram of long polypropylene fiber of 9 millimeters, 15 to 20 grams of organic silicon powder, and 15 to 20 grams of zinc stearate powder; the main materials and additives are mixed together, and the mixture is bagged for use. Tests on the polymer cement waterproof thermal insulation mortar show that: after 28days, the compression strength is more than or equal to 0.2 MPa, the thermal conductivity is less than or equal to 0.07 W / (m.k), the dry density is less than or equal to 400 kg / m3, and the water absorption is less than or equal to 1,000 g / m2 in 1 hour and is better than that of 5,000 g / m<2> of an external wall mortar of a common material in 1 hour, so the polymer cement waterproof thermal insulation mortar is a novel building material.

Description

technical field [0001] The invention relates to a polymer cement waterproof and heat-retaining mortar used on building exterior walls, which belongs to building materials. Background technique [0002] At present, the external wall insulation materials of buildings in cold winter and hot summer areas generally use ordinary inorganic thermal insulation mortar materials, but due to the high water absorption of ordinary inorganic thermal insulation mortar, the water absorption in one hour can reach more than 5,000 grams per square meter, which is very easy. Cause the wall to crack, bulge, fall off, and even leak in the house, causing quality and safety hazards and affecting the service life of the building. For this reason, in order to improve the quality of building exterior walls, it is very necessary to develop a material that is different from the commonly used building insulation materials and has both thermal insulation and waterproof properties. Contents of the inventi...

AI Technical Summary

Problems solved by technology

[0002] At present, the external wall insulation materials of buildings in cold winter and hot summer areas generally use ordinary inorganic thermal insulation mortar materials, but due to the high water absorption of ordinary inorganic thermal insulation mortar, the water absorption in one hour can reach more than 5,000 grams per square meter, which is very easy. Cause the wall to crack, bulge, fall off, and even leak in the house, causing quality and safety hazards and affecting the service life of the building