Heat retaining masonry mortar and preparation method thereof

Abstract

The invention discloses a heat retaining masonry mortar and a preparation method thereof. The heat retaining masonry mortar comprises raw material components based on parts by weight: 20-30 parts of silicate cement, 0-20 parts of medium sand, 0-20 parts of pulverized fuel ash, 0.02-0.05 part of additive and 30-70 parts of industrial furnace slag, or 1-10 parts of closed cell perlite, or 1-10 parts of EPS polyphenyl granules or the mixture of the industrial furnace slag, the closed cell perlite and the EPS polyphenyl granules; the raw material components are stirred and evenly mixed. The invention can improve the heat-insulating property, the facility value and the bonding strength of the mortar, and has low cost and simple production technique.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a thermal insulation masonry mortar and a preparation method thereof. Background technique [0002] Ordinary masonry mortar is generally cement mortar or mixed mortar. Its apparent density is generally greater than 1800kg / m 3 , the thermal conductivity is about 0.93w / (m.k); while the apparent density of self-insulating blocks is generally 950kg / m 3 , The thermal conductivity is 0.15~0.45w / (m.k). When the self-insulating block wall is built with ordinary masonry mortar, due to the large difference in thermal conductivity between the two, there is a cold "hot" bridge phenomenon in the entire masonry, and the energy loss caused by the masonry mortar joints is very large. There may even be condensation on the wall, which will shorten the service life of the building and reduce the use function. [0003] At present, the quality of mortar prepared on the construction site is unsta...

AI Technical Summary

Problems solved by technology

When the self-insulating block wall is built with ordinary masonry mortar, due to the large difference in thermal conductivity between the two, there is a cold "hot" bridge phenomenon in the entire masonry, and the energy loss caused by the masonry mortar joints is very large. There may even be condensation on the wall, which will shorten the service life of the building and reduce the use function.

[0003] At present, the quality of mortar prepared on the construction site is unstable, and the strength is difficult to meet the requirements, which may easily lead to problems such as wall cracking and leakage.