Rice husk heat-insulating porous building block and preparation method thereof

A technology of porous block and rice husk, which is applied in the field of building wall materials, can solve the problems such as the thermal conductivity and pressure strength of the wall are not easy to reach the standard, the amount of rice husk is limited, etc., and achieves good freeze-thaw and shrinkage performance. Convenient construction and transportation, strong bite effect

Active Publication Date: 2013-12-04
江苏协和装饰工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that without compaction and without a certain density of light walls, the amount of rice husks is very limited, and the thermal conductivity and pressure strength of the walls are not easy to meet the standards.

Method used

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  • Rice husk heat-insulating porous building block and preparation method thereof
  • Rice husk heat-insulating porous building block and preparation method thereof
  • Rice husk heat-insulating porous building block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The density of the modified rice husk is 115-125g / L, and the preferred density in this case is 120g / L.

[0018] Original rice husk / modified rice husk=0.79

[0019] The length of the short glass fiber is 20-30mm.

[0020] The amount of modified rice husk added to the wall block is set: 2.2L / kg cement (1kg of cement is mixed with 2.2L of rice husk)

[0021] Setting of basic formula of rice husk insulation porous block:

[0022]

[0023] Taking 1000g of cement as an example, the formula for calculating the weight of water is as follows:

[0024] 1000g (cement)×0.17=170g

[0025] 2.2L (modified rice husk)×0.17×1000g / L (water density)-30g (glue quality)=344g

[0026] The weight of water=170g+344g=514g

[0027] Among them, 0.17 is a constant, which is convenient for calculating the amount of water added when the cement and modified rice husk in the balance formula change, and is suitable for the environment where the molding pressure is 5MPa. When the molding pressur...

Embodiment 2

[0029] Setting of basic formula of rice husk insulation porous block:

[0030] Others are the same as in Embodiment 1, and the changes are as follows:

[0031]

[0032]

[0033] Such as figure 2 As shown, the rice husk heat-insulating porous block prepared by the above-mentioned preparation method of the rice husk heat-insulating porous block includes a brick body, which is provided with a number of through holes, and the porosity is 40%, and the density is 0.7kg / m 3 .

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Abstract

The invention discloses a preparation method of a rice husk heat-insulating porous building block. The preparation method comprises the following steps: a, preparing the following raw materials in parts by weight: 1,000 parts of cement, 264 parts of modified rice husks, 4.4 parts of staple glass fiber, 30 parts of glue, 4 parts of hydrophobic aid and 514 parts of water; b, diluting the glue with water for later use, wherein the mass ratio of the glue to the water is 1:1; c, diluting the hydrophobic aid with water for later use, wherein the mass ratio of the hydrophobic aid to the water is 1:10; d, adding the residual water, the modified rice husks and the staple glass fiber into mixing equipment, and stirring and mixing; e, adding the cement into the mixing equipment and stirring; f, adding the glue which is diluted with water in the step b into the mixing equipment and stirring; g, adding the hydrophobic aid which is diluted with water in the step c into the mixing equipment and stirring; h, adding the mixture into a mold and forming; and i, after mold stripping, performing hydration reaction under the steam environment. The rice husk heat-insulating porous building block provided by the invention is light in weight and small in heat conductivity coefficient and the invention also provides the preparation method of the rice husk heat-insulating porous building block.

Description

technical field [0001] The invention relates to a rice husk thermal insulation porous block and a preparation method thereof, belonging to building wall materials. Background technique [0002] There is a paper "Rice Husk Cement Concrete" that follows the traditional sandstone cement concrete vibration method construction technology, uses barbed wire and steel bars as reinforcing materials to make prefabricated block products, and thinks that this kind of concrete products with rice husks as lightweight aggregates will not be pressed. Ready to shape. It is well known that without compaction and without a certain density of light walls, the amount of rice husks is very limited, and the thermal conductivity and pressure strength of the walls are not easy to meet the standards. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a rice husk thermal insulation porous block with light weight and small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B18/24
CPCY02W30/91
Inventor 王兴存
Owner 江苏协和装饰工程有限公司
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