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Cement base thermal insulation mortar containing rice straw fibers and application method thereof

A thermal insulation mortar and cement-based technology, applied in the field of building materials, can solve the problems of shrinkage cracking and high cost of thermal insulation mortar, and achieve the effects of low production cost, improved workability and water retention, and improved construction performance.

Inactive Publication Date: 2016-08-03
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can solve the problems of high cost and easy shrinkage and cracking of general vitrified microbead thermal insulation mortar

Method used

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  • Cement base thermal insulation mortar containing rice straw fibers and application method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: A cement-based thermal insulation mortar containing rice stalk fibers, according to 42.5 grade ordinary Portland cement 100, calcium hydroxide 30, high calcium fly ash 20, rice husk ash 5, vitrified microbeads 60, rice Shell 10, rice straw fiber 0.7, polyacrylonitrile fiber 0.2, EVA latex powder 5, hydroxypropyl methylcellulose 2.5, sodium lauryl sulfate air-entraining agent 0.25, hydroxypropyl starch ether 0.1 weight ratio preparation and to make. Add water according to 0.95 times of the total weight of the thermal insulation mortar, and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0054] Example 2: A cement-based thermal insulation mortar containing rice stalk fibers, according to 52.5 grade ordinary Portland cement 100, calcium hydroxide 50, high calcium fly ash 20, rice husk ash 15, vitrified microspheres 50, rice Shell 18, rice straw fiber 1.2, polyacrylonitrile fiber 0.3, EVA latex powder 7.5, hydroxypropyl methylcellulose 3.5, sodium lauryl sulfate air-entraining agent 0.3, hydroxypropyl starch ether 0.05 weight ratio preparation and to make. Add water according to 1.2 times the total weight of the thermal insulation mortar, and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0055] Example 3: A cement-based thermal insulation mortar containing rice stalk fibers, according to 42.5 grade ordinary Portland cement 100, calcium hydroxide 35, high calcium fly ash 15, rice husk ash 20, vitrified microbeads 45, rice Shell 8, rice straw fiber 0.5, polyacrylonitrile fiber 0.35, EVA latex powder 6, hydroxypropyl methylcellulose 1.5, sodium lauryl sulfate air-entraining agent 0.4, hydroxypropyl starch ether 0.2 weight ratio preparation and to make. Add water according to 0.85 times of the total weight of the thermal insulation mortar, and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

[0056] Table 1 embodiment performance test result

[0057]

[0058] It can be seen from the above examples that the cement-based thermal insulation mortar containing rice straw fibers proposed by the present invention can be formulated with thermal insulation mortars with different thermal insulation effects according to requ...

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Abstract

The invention belongs to the technical field of construction materials, and specifically relates to a cement base thermal insulation mortar containing rice straw fibers and an application method thereof. The cement base thermal insulation mortar is composed of common silicate cement, calcium hydroxide, high calcium fly ash, rice hull ash, rice straw fiber, polyacrylonitrile fiber, vitrified beads, rice hull, EVA emulsion powder, cellulose ether, an air-entrainer, and starch ether. The problems of common vitrified bead thermal insulation mortar such as high cost, easy shrinkage and cracking, and the like are solved. At the same time, agricultural wastes such as wheat straw and other solid wastes are fully utilized, the production cost is low, the construction is simple and quick, moreover, the provided cement base thermal insulation mortar has the advantages of good workability and mechanical properties, small shrinkage, no cracking, excellent thermal insulation performance and fireproof property, safety, durability, and flameproof property, and the fireproof property can reach the A grade. Good economic benefits and social benefits can be generated, and the mortar is suitable for thermal insulation and energy saving engineering of inner / outer walls.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a cement-based thermal insulation mortar containing rice straw fibers and a use method thereof. Background technique [0002] With the development of building energy conservation in China, the application of building wall insulation system has become one of the important technologies to realize building energy conservation. Buildings are extended to rural buildings, promoting the development of energy-saving buildings in urban and rural areas, and put forward the development and promotion of new energy-saving building materials. Building energy conservation urgently needs safe, environmentally friendly and efficient thermal insulation materials. Insulation mortar is a kind of powder insulation material obtained by mixing light aggregate, cementitious material and chemical additives. Compared with various insulation boards, it has the advantages of convenie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/24
CPCC04B28/04C04B22/062C04B18/08C04B18/101C04B14/22C04B18/248C04B16/0658C04B24/383C04B24/26C04B24/16C04B24/386Y02W30/91
Inventor 张国防王培铭王亚文徐玲琳李好新于龙
Owner TONGJI UNIV
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