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Method for preparing lightweight high-strength cast-in-place concrete partition wall by using building waste

A technology for construction waste and concrete, which is applied in building structures, buildings, building components, etc., to achieve the effects of low cost, reduced construction cost, and reduced building load

Inactive Publication Date: 2018-08-14
东莞市中森环源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the deficiencies in the design and construction of the existing internal partition wall of the building

Method used

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  • Method for preparing lightweight high-strength cast-in-place concrete partition wall by using building waste
  • Method for preparing lightweight high-strength cast-in-place concrete partition wall by using building waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The formula of pouring slurry is: construction waste sand powder 85%, cement 10%, foaming agent 2.5%, concrete waterproofing agent 1.5%, fiber 0.5%, concrete additive 0.5%. The strength of the partition wall reaches 7.5MPa.

[0036] 1) Grind waste concrete and bricks to the state of sand powder (particle size below 2mm), and use them as the main raw materials for wall materials;

[0037] 2) Refer to the design drawings, design according to the wall form, load size, foundation soil type, construction equipment and material supply, build the formwork and its brackets, and set the steel mesh in the formwork; waterproof the sand powder, cement and concrete in the factory Mixing agent, fiber, and concrete additives according to the ratio to obtain dry concrete, which is transported to the construction site;

[0038] 3) Prepare foam slurry: add foaming agent and water into the foaming tank, inflate and pressurize for 5 minutes, and pressurize the air compressor to 0.7MPa to ...

Embodiment 2

[0044] The formula of pouring slurry is: construction waste sand powder 82%, cement 13%, foaming agent 2.5%, concrete waterproofing agent 1.5%, fiber 0.5%, concrete additive 0.5%. The strength of the partition wall reaches 10MPa.

[0045] 1) Grind waste concrete and bricks to the state of sand powder (particle size below 2mm), and use them as the main raw materials for wall materials;

[0046]2) Refer to the design drawings, design according to the wall form, load size, foundation soil type, construction equipment and material supply, build the formwork and its brackets, and set the steel mesh in the formwork; waterproof the sand powder, cement and concrete in the factory Mixing agent, fiber, and concrete additives according to the ratio to obtain dry concrete, which is transported to the construction site;

[0047] 3) Prepare foam slurry: add foaming agent and water into the foaming tank, inflate and pressurize for 5 minutes, and pressurize the air compressor to 0.7MPa to ob...

Embodiment 3

[0053] The formula of pouring slurry is: construction waste sand powder 88%, cement 7%, foaming agent 2.5%, concrete waterproofing agent 1.5%, fiber 0.5%, concrete additive 0.5%. The strength of the partition wall reaches 5MPa.

[0054] 1) Grind waste concrete and bricks to the state of sand powder (particle size below 2mm), and use them as the main raw materials for wall materials;

[0055] 2) Refer to the design drawings, design according to the wall form, load size, foundation soil type, construction equipment and material supply, build the formwork and its brackets, and set the steel mesh in the formwork; waterproof the sand powder, cement and concrete in the factory Mixing agent, fiber, and concrete additives according to the ratio to obtain dry concrete, which is transported to the construction site;

[0056] 3) Prepare foam slurry: add foaming agent and water into the foaming tank, inflate and pressurize for 5 minutes, and pressurize the air compressor to 0.7MPa to obt...

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Abstract

The invention discloses a method for preparing a lightweight high-strength cast-in-place concrete partition wall by using building waste, wherein the raw materials comprise, by weight, 65-95% of building waste sand powder, 3-20% of cement, 0.1-5% of a foaming agent, 0.1-5% of a concrete waterproofing agent, 0.1-5% of a concrete additive, and 0.1-5% of fiber. According to the present invention, thepartition wall is prepared by using the disassembly-free cast-in-place method, has advantages of light weight, high strength, water resistance, impermeability, good shock resistance and good integrity, and can improve the construction efficiency and reduce the construction cost; after the casting, the partition wall is flat and smooth without the coating with mortar; and the cast-in-place foam concrete comprises Portland cement or ordinary Portland cement, building waste regenerated sand powder, concrete foaming agent, concrete waterproofing agent and the like.

Description

technical field [0001] The invention relates to a technique for preparing a cast-in-place lightweight high-strength concrete partition wall at a building construction site by using waste concrete and bricks contained in construction waste ground to sand powder as the main material. Background technique [0002] In 1999, the General Office of the State Council forwarded the document "Several Opinions on Promoting the Modernization of the Housing Industry and Improving Housing Quality" (Guobanfa [1999] No. 72) issued by the Ministry of Construction and other departments. Before 2013, the cumulative area of ​​prefabricated buildings was less than 18 million square meters. In 2014, it reached 20 million square meters nationwide, and in 2015, it was nearly 40 million square meters. [0003] In 2016, the State Council issued the "Several Opinions of the Central Committee of the Communist Party of China and the State Council on Further Strengthening the Management of Urban Planning...

Claims

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Application Information

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IPC IPC(8): C04B38/10C04B28/04C04B40/02E04B2/84
CPCC04B28/04C04B40/0277C04B2201/50E04B2/84C04B18/16C04B14/42C04B2103/302C04B2103/0068C04B38/10
Inventor 张瑞军刘光潘志东
Owner 东莞市中森环源环保科技有限公司
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