Thermal insulating mortar and preparation method thereof

Abstract

The invention discloses a thermal insulating mortar and a preparation method thereof and belongs to the technical field of preparation of building materials. The thermal insulating mortar is preparedfrom the following raw materials including silicate cement, coal ash, limestone powder, polystyrene particles, bentonite, thickener, heavy calcium carbonate powder, tackifier, carboxyethyl methylcellulose, lauryl sodium sulfate, calcium fluoride, styrene maleic anhydride copolymer and organosilicon-polyurethane copolymer, sodium carbonate and hydrochloric acid through the steps of mixing, stirringand the like. The thermal insulating mortar can improve the compressive strength and reduce dry apparent density, heat conductivity coefficient and water absorption per volume.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a thermal insulation mortar and a preparation method thereof. Background technique [0002] At present, my country's civil building energy-saving engineering requirements are getting higher and higher, and a large number of new building energy-saving materials and new processes have emerged in the market; among them, the thermal insulation mortar external wall thermal insulation system has played a very important role in modern high-rise buildings. Its reliable structural treatment has been recognized by the society, and it is one of the external wall thermal insulation methods with the most comprehensive advantages at present. Insulation mortar refers to the dry powder material for building thermal insulation made of inorganic lightweight aggregate, cementitious material, admixtures, fillers, etc. When used, it is mixed with water to make a slur...

AI Technical Summary

Problems solved by technology

This invention has the characteristics of good thermal insulation effect and good integrity of the thermal insulation system, but there are problems of low compressive strength of mortar, high thermal conductivity, dry apparent density and shrinkage rate

The main shortcomings are: (1) The thermal conductivity of the thermal insulation mortar is relatively large, and the thermal insulation performance needs to be improved

(2) The existing mortar preparation methods and equipment cannot meet the special requirements of thermal insulation mortar

The aggregate of thermal insulation mortar has a certain degree of brittleness. In the process of mortar preparation, due to reasons such as unreasonable mixing process, too long stirring time or excessive stirring intensity, etc., the thermal insulation aggregate is damaged and the thermal performance of the thermal insulation mortar is reduced.

(3) At present, the construction method of thermal insulation mortar is mainly manual plastering, which generally survives in multiple times, and the time interval between two plasterings is long. After the construction is completed, the curing and drying time of the thermal insulation layer is longer, and the construction period is long and the efficiency is low.

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