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Recycled concrete mixed with waste clay brick powder and brick sand

A technology for recycling concrete and brick powder, which is applied in the field of recycled concrete of brick sand, recycled concrete, and mixed with waste clay brick powder, can solve the problems of pollution, limited quantity of limestone, random mining environment of clay resources, etc., achieves low energy consumption, simple craftsmanship

Inactive Publication Date: 2017-08-08
XINJIANG JINYUXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of limestone that can be used to produce cement in my country is limited, and clay resources cannot be exploited inexhaustibly; and the rapid development of the cement industry has also caused serious environmental pollution. Pollution such as CO2, SO2 and dust directly affect people's lives quality

Method used

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  • Recycled concrete mixed with waste clay brick powder and brick sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A recycled concrete mixed with waste clay brick powder and brick sand is characterized in that it is prepared from the following components by weight:

[0026] Cement: 110 parts, mineral powder: 38 parts, brick powder: 76 parts, quicklime: 8 parts, sandstone: 530 parts, brick sand: 140 parts, water reducer: 1.5 parts, water: 120 parts.

[0027] Wherein, the label of cement is P.042.5, and the mineral powder is grade III mineral powder, with a specific surface area ≥ 400m² / kg; the specific surface area of ​​the brick powder ≥ 200m² / kg, and the brick sand comes from broken clay bricks, and the particle size is 5-16mm, the mass ratio of brick powder to quicklime is 10 / 1.

[0028] In the sand and gravel, the mass ratio of sand particle size 0-4.57mm, small stone particle size 4.75mm-20mm, and large stone particle size 20mm-40mm is 3 / 1 / 4.

[0029] Preparation method steps:

[0030] (1) Put sand, cement, slag powder, brick powder, quicklime, and water into the mixer, and st...

Embodiment 2

[0037] A recycled concrete mixed with waste clay brick powder and brick sand is characterized in that it is prepared from the following components by weight:

[0038] Cement: 110 parts, mineral powder: 38 parts, brick powder: 76 parts, quicklime 8 parts, sandstone: 670 parts, water reducing agent: 1.4 parts, water: 90 parts.

[0039] Wherein, the label of cement is P.042.5, and the mineral powder is grade III mineral powder, with a specific surface area ≥ 400m² / kg; the specific surface area of ​​the brick powder ≥ 200m² / kg, and the brick sand comes from the crushing of clay bricks, and the particle size 5-16mm, the mass ratio of brick powder to quicklime is 10 / 1.

[0040] In the sand and gravel, the mass ratio of sand particle size 0-4.57mm, small stone particle size 4.75mm-20mm, and large stone particle size 20mm-40mm is 3 / 1 / 4.

[0041] Preparation method steps:

[0042] (1) Put sand, cement, slag powder, brick powder, quicklime, and water into the mixer, and stir for 30 se...

Embodiment 3

[0049] A recycled concrete mixed with waste clay brick powder and brick sand is characterized in that it is prepared from the following components by weight:

[0050] Cement: 162 parts, mineral powder: 19 parts, brick powder: 38 parts, quicklime 4 parts, sandstone: 600 parts, brick sand 70 parts, water reducing agent: 1.5 parts, water: 105 parts.

[0051]Among them, the label of cement is P.042.5, the mineral powder is grade III mineral powder, and the specific surface area is ≥ 400m² / kg; the specific surface area of ​​the brick powder is ≥ 200m² / kg, and the brick sand comes from clay brick crushing, and the particle size is 5 -16mm, the mass ratio of brick powder to quicklime is 10 / 1.

[0052] In the sand and gravel, the mass ratio of sand particle size 0-4.57mm, small stone particle size 4.75mm-20mm, and large stone particle size 20mm-40mm is 3 / 1 / 4.

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Abstract

The invention relates to recycled concrete mixed with waste clay brick powder and brick sand, the waste clay brick powder is mixed into concrete for replacing part of cement, the waste clay brick sand is mixed into the concrete for replacing part of natural sandstone aggregate without reducing the performance of the concrete, the recycled concrete is prepared from the waste clay brick powder and brick sand obtained by crushing of waste clay bricks, the dosage of the cement is reduced by 0-55% not including 0, the dosage of the natural sandstone aggregate is reduced by 0-25% not including 0 without changing of concrete strength and workability, the waste clay brick powder and brick sand are obtained by crushing of the waste clay bricks in construction waste, the cost is low, the brick powder has less influence on the compressive strength and the flexural strength of the concrete, and can improve shrinkage of the concrete. The recycled concrete adopts a multi-stage preparation and multi-time feeding method for production, first cement mortar is premixed, according to the granular composition, the brick sand, small stones and large stones are in turn fed in, mixing time and energy consumption are reduced, the strength of the concrete is improved, the homogeneity and the workability of the concrete are improved, and the recycled concrete has important significance for energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a recycled concrete mixed with waste clay brick powder and brick sand, which belongs to the field of building materials, in particular to a recycled concrete mixed with waste clay brick powder and brick sand. Background technique [0002] With the demolition of old buildings, a large amount of construction waste mainly composed of clay bricks is also increasing. Waste clay bricks are a common solid waste in the construction industry and have become one of the main sources of pollution. They not only occupy a large amount of storage space, but also Dust can also cause a great extent to the environment. However, the amount of limestone that can be used to produce cement in my country is limited, and clay resources cannot be exploited inexhaustibly; and the rapid development of the cement industry has also caused serious environmental pollution. Pollution such as CO2, SO2 and dust directly affect people's lives quality. On the ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16
CPCC04B18/16C04B28/04C04B2201/50C04B18/12C04B22/064C04B14/06C04B2103/302Y02W30/91
Inventor 马宏钢王建军
Owner XINJIANG JINYUXIN NEW MATERIAL CO LTD
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