Thermal insulation mortar and manufacturing method thereof

Abstract

The invention discloses thermal insulation mortar. The thermal insulation mortar is prepared from, by weight, 25-35 parts of cement, 30-45 parts of sandy soil, 10-20 parts of lime powder, 8-16 parts of lightweight aggregate, 5-10 parts of swelling agent, 4-8 parts of crack-resistant additives, 2-8 parts of water reducing agent, 8-12 parts of polyvinyl alcohol, 6-9 parts of hydroxypropyl methyl cellulose, 6-13 parts of zeolite powder and 15-20 parts of straw fiber. The thermal insulation mortar has the good thermal insulation property and good mechanical property, by adding the straw fiber, early drying shrinkage of the mortar can be reduced, generation and growth of microcracks are inhibited, cracks are effectively reduced, dielectric material continuity is enhanced, and toughness of the mortar is improved; on the condition that the straw fiber cooperates with the swelling agent, the crack-resistant additives, polyvinyl alcohol and hydroxypropyl methyl cellulose, the adhesion of the mortar is enhanced, and then the cohesion and flexibility of the mortar material are improved; by adding the zeolite powder, the flexural strength of the mortar can be significantly improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a thermal insulation mortar and a manufacturing method thereof. Background technique [0002] Insulation mortar is a kind of ready-mixed dry powder mortar made of various light materials as aggregate, cement as cement, mixed with some modified additives, and mixed by the production enterprise. It is used to construct the insulation layer of the building surface a building material. At present, my country's construction 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 comp...

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Problems solved by technology

[0003] At present, the water retention and thermal insulation properties of the mortar we use are relatively good, but the compressive and flexural strength is not high, the toughness is poor, the tensile strength is low, and it is easy to cause problems such as cracking, which limits the use of mortar.