Lightly calcined dolomite thermal insulation mortar

Abstract

The invention relates to lightly calcined dolomite thermal insulation mortar, which comprises the following components in part by weight: 20 to 60 parts of lightly calcined dolomite, 1 to 60 parts of flyash, 5 to 35 parts of retarding agent, 1 to 40 parts of strengthening and thickening agent, 1 to 20 parts of kieselguhr, 5 to 35 parts of expanded aggregate, 0.5 to 5 parts of polystyrene foam particle, 0.01 to 0.2 part of polypropylene fiber, 0.5 to 8 parts of water resistance additive, and 0.05 to 2 parts of water reducer. The thermal insulation mortar has the advantages of excellent thermal insulation property, good compression strength, freezing resistance and water resistance, good volume stability, low production cost, energy conservation, environmental friendliness and the like. The construction process is simple; and after construction, the lightly calcined dolomite thermal insulation mortar is not hollowed or cracked, and is particularly suitable for a thermal insulation material for building walls.

Description

technical field [0001] The invention relates to a mortar in the technical field of construction engineering, in particular to a light-burned dolomite thermal insulation mortar. Background technique [0002] At present, the country is vigorously developing and promoting environmental protection and energy-saving building structures. The implementation of building energy conservation must greatly improve the thermal performance of maintenance structures, especially external walls. Generally speaking, there are two main energy-saving methods for building maintenance structures: one is to directly select the thermal insulation wall structure; the other is to apply a layer of thermal insulation mortar on the outer layer of the wall. In comparison, the outer layer of the wall is painted with thermal insulation mortar, and the construction is simple, especially for the existing building structure, its advantages are more obvious. Therefore, the method that building exterior wall ...

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Problems solved by technology

Chinese invention patent application 200710130956.3 discloses a kind of anti-cracking and waterproof polystyrene particle thermal insulation slurry. Aiming at the lack of easy cracking and durability of thermal insulation mortar, it is proposed to use infrared reflective material, polypropylene short fiber and polymer emulsion to modify and prepare The thermal insulation material has the characteristics of high adhesion, no cracking and deformation, and strong anti-leakage ability. However, compared with other thermal insulation mortar materials, its price is more expensive and the construction period is longer.

Through the analysis of the existing thermal insulation mortar materials, the cementitious materials used are basically cement matrix. After setting and hardening, they have large drying shrinkage characteristics, easy to crack, poor frost resistance, not easy to construct in winter, and hardening is relatively slow. Slow, and the ability to bond with the substrate is limited, which is limited in practical engineering applications

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