Gypsum base swelling perlite heat-insulating mortar dry powder and its usage method

Abstract

The invention relates to a gypsum base swelling perlite heat-insulating mortar dry powder, wherein each unit of the thermal insulating mortar dried powder comprises the following raw material as the components: expanded perlite 0.9-1.1m3, beta CaSO4*1 / 2H2O 145-165kg, common silicate cement 18-22kg, grade I coal ash and / or grade II coal ash and / or high calcium ash 45-65kg, polypropylene fiber 0.4-1kg, 80-100 mesh heavy calcium powder and / or calcium carbonate powder 1.3-1.7kg, cellulose methyl and / or methylcellulose propylene glycol ether 1.5-2.5kg, gypsum retarder 3.0-5.0kg and sodium dodecyl silicate 0.008-0.013kg.

Description

technical field [0001] The invention relates to a kind of thermal insulation mortar dry powder applied in the field of building energy saving, in particular to a gypsum-based expanded perlite thermal insulation mortar dry powder applied to an external wall internal thermal insulation system, a roof thermal insulation system and a stair thermal insulation system, and provides a kind of thermal insulation mortar dry powder. How to use dry mortar powder. Background technique [0002] At present, the country is vigorously advocating the construction of an energy-saving society, and buildings must take building energy conservation as their development direction. External wall thermal insulation is an important technical means of building energy saving, and has become a hot spot of building energy saving. However, the building energy-saving method of external thermal insulation has its own limitations. Taking into account the requirements of safety performance such as fire prote...

AI Technical Summary

Problems solved by technology

In the current market, cement-based expanded perlite insulation mortar has a relatively high share due to its advantages of low cost, convenient construction, and high fire resistance. Although polystyrene board has the disadvantages of high cost, complicated construction, and low fire resistance, its The thermal insulation effect has obvious advantages, so it has still been applied to a certain extent, and the market share of cement-based expanded perlite thermal insulation mortar is second.

However, both of the above two internal insulation types have common shortcomings. Their anti-cracking effect is poor, and harmful cracks on the surface are difficult to control, which not only affects the energy-saving effect of the building, but also is not beautiful, and even poses a safety hazard.