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Glass bead and wheat straw composite thermal insulation mortar

A technology of composite thermal insulation mortar and wheat straw, which is applied in the field of building energy-saving thermal insulation materials, can solve the problems of smooth surface of straw and poor adhesion of cement slurry, and achieve the effects of improving water retention of mortar, improving construction performance, and protecting the environment

Inactive Publication Date: 2015-01-07
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome or alleviate the inhibitory effect of carbohydrates in wheat straw on the hydration and hardening of cement, the smooth surface of straw and the poor adhesion of cement slurry, etc., and use the waste stone powder produced by granite stone to provide a glass Chemical beads-wheat straw composite thermal insulation mortar and preparation method thereof

Method used

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  • Glass bead and wheat straw composite thermal insulation mortar
  • Glass bead and wheat straw composite thermal insulation mortar
  • Glass bead and wheat straw composite thermal insulation mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Table 1 Composition of raw materials of vitrified bead-wheat straw composite thermal insulation mortar

[0027]

[0028] As shown in Table 1, the ingredients of each raw material are calculated by weight percentage.

Embodiment 2

[0030] Table 2 Composition of raw materials of vitrified microbead-wheat straw composite thermal insulation mortar

[0031]

[0032] As shown in Table 2, the ingredients of each raw material are calculated by weight percentage.

Embodiment 3

[0034] Table 3 Composition of raw materials of vitrified microbead-wheat straw composite thermal insulation mortar

[0035]

[0036] As shown in Table 3, the ingredients of each raw material are calculated by weight percentage.

[0037] Table 4 Performance test data of the thermal insulation mortar prepared in Examples 1 to 3

[0038]

[0039] Comparing Table 1 and Table 2, there are more vitrified microbeads in Example 1 than in Example 2, and there is no alkali-treated wheat straw in Example 1. It can be seen from Table 4 that the thermal conductivity of Example 2 is lower than that of Example 1, and the thermal insulation performance is good, which shows that the thermal insulation properties of wheat straw are brought into play. However, the compressive strength, bonding strength, and linear shrinkage rate are significantly lower than those of Example 1, indicating that alkali treatment still cannot eliminate the negative effects of sugars in straw.

[0040] Comparing Table 1 and...

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Abstract

The invention discloses glass bead and wheat straw composite thermal insulation mortar. The thermal insulation mortar comprises 23-27% of cement, 14-16% of coal ash, 9-11% of granite powder, 4.5-5.5% of medium sand, 36-45% of glass beads, 1-9% of wheat straws, 1-1.1% of redispersible latex powder, 0.3-0.5% of cellulose ether and 0.3-0.5% of polyvinyl alcohol fibers. The wheat straws are subjected to alkali treatment, so that the cement hydration and hardening obstruction is relieved; and the granite powder is doped after being sieved by using an 80-mu m sieve. The composite thermal insulation mortar disclosed by the invention retains the favorable construction performance, heat insulation effect, crack resistance and the like of inorganic thermal insulation mortar, and crop straws and waste granite powder obtained in stone exploitation can be utilized, so that the glass bead and wheat straw composite thermal insulation mortar is an energy-saving, waste-utilizing and environment-friendly thermal insulation material and can be applied to thermal insulation construction of buildings.

Description

1. Technical Field [0001] The invention belongs to the field of building energy-saving insulation materials and relates to a composite insulation mortar of vitrified microbeads and wheat straw. 2. Background technology [0002] With the development of society, people's concept of environmental protection has been continuously strengthened, and they have begun to extensively and in-depth study the recycling of socially produced waste. The field of construction materials can provide a broad space for the use of garbage and waste in social production. Building energy conservation is an important part of energy conservation and emission reduction in the entire society. At present, the energy conservation systems used in my country mainly include inorganic thermal insulation mortar systems, expanded polystyrene board systems, extruded polystyrene board systems, polyurethane systems, etc. Although expanded polystyrene board system, extruded polystyrene board system, polyurethane system...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/24C04B14/22C04B14/04C04B16/06C04B24/38C04B24/26
CPCY02W30/91
Inventor 刘福胜张琳高文涛周广发崔兆彦孙雷
Owner SHANDONG AGRICULTURAL UNIVERSITY