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Chopped straw fiber-toughened inorganic thermal insulation mortar and using method thereof

A technology of inorganic thermal insulation mortar and straw fiber, applied in the field of building materials, can solve the problems of large brittleness, large shrinkage, hollow cracking, etc., and achieve the effects of low production cost, reduced dry apparent density, and improved crack resistance.

Inactive Publication Date: 2015-05-27
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at some performance disadvantages of vitrified microbead thermal insulation mortar such as high brittleness, large shrinkage and hollow cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1, a crushed straw fiber toughened inorganic thermal insulation mortar, according to 42.5 grade ordinary Portland cement 100, fly ash 20, superfine fly ash 3, waste porcelain powder 20, fluorogypsum 5, vitrified microspheres 70, prepared by weight ratio of crushed straw fiber 0.1, rice husk 8, starch ether 0.2, and calcined diatomite 5. According to 100% of the total weight of the inorganic thermal insulation mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0048] Example 2, a crushed straw fiber toughened inorganic thermal insulation mortar, according to 52.5 grade ordinary Portland cement 100, fly ash 60, superfine fly ash 10, waste porcelain powder 5, fluorine gypsum 10, vitrified microspheres 150, crushed straw fiber 0.7, rice husk 20, starch ether 0.7, and calcined diatomaceous earth 25. According to 130% of the total weight of the inorganic thermal insulation mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0049] Example 3, a crushed straw fiber toughened inorganic thermal insulation mortar, according to 52.5 grade ordinary Portland cement 100, fly ash 40, ultrafine fly ash 5, waste porcelain powder 15, fluorine gypsum 1, vitrified microspheres 120, crushed straw fiber 1.5, rice husk 30, starch ether 0.6, and calcined diatomaceous earth 20. According to 150% of the total weight of inorganic thermal insulation mortar, add water and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

[0050] Table 1 Example performance test results

[0051] Performance Example 1 Example 2 Example 3 28d compressive strength / MPa 0.9 0.8 0.5 Dry apparent density / (kg / m 3 ) 420 340 240 Thermal conductivity / (W / (m k)) 0.10 0.08 0.06 28d shrinkage rate / % 0.20 0.15 0.12 Tensile bond strength / MPa 0.22 0.28 0.31 Softening coefficient 0.65 0.65 0.60

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PUM

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Abstract

The invention belongs to the technical field of building materials and particularly relates to chopped straw fiber-toughened inorganic thermal insulation mortar and a using method thereof. The chopped straw fiber-toughened inorganic thermal insulation mortar is prepared from ordinary portland cement, coal ash, superfine coal ash, waste ceramic powder, fluorgypsum, glass bead, chopped straw fiber, rice husk, starch ether and roasted diatomite. The chopped straw fiber-toughened inorganic thermal insulation mortar is suitable for masonry and plastering construction of interior and exterior walls, and has the characteristics of being excellent in construction, free of hollow protuberances and cracking, good in bonding performance with a wall body, excellent in thermal insulation and heat insulation, and the like. The chopped straw fiber-toughened inorganic thermal insulation mortar is energy-saving, environmentally friendly, low in production cost, convenient to construct, and relatively good in economic benefits and social benefits, and crop wastes are sufficiently utilized.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a crushed straw fiber toughened inorganic thermal insulation mortar and a use method thereof. Background technique [0002] With the development of domestic building energy conservation, various organic and inorganic thermal insulation systems have been widely used. Due to the disadvantages of poor weather resistance, poor stability and poor fire resistance of organic thermal insulation materials, inorganic thermal insulation mortars, especially vitrified bead thermal insulation mortars, are more and more widely used in the market. Aiming at some performance disadvantages of vitrified microbead thermal insulation mortar such as high brittleness, large shrinkage and hollowing and cracking. It is imperative to find crack-resistant fibers that can improve the brittleness and shrinkage of vitrified microbead insulation mortar. [0003] At present, there is a ...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B28/04C04B18/24
CPCY02W30/91
Inventor 孙振平张丽华
Owner TONGJI UNIV
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