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Pavement brick prepared from construction waste recycled aggregate and preparation process thereof

A technology of recycled aggregates and construction waste, applied in the field of building materials, can solve problems such as low strength levels, achieve the effects of reducing production costs, reducing environmental pollution, and improving durability

Inactive Publication Date: 2021-02-09
BCEG RESOURCES RECYCLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the present invention aims at the problem that the strength grade of pavement bricks prepared from existing brick and tile recycled aggregates is not high, and provides a pavement brick prepared from construction waste recycled aggregates with high compressive strength, and also provides pavement bricks in the technical solution of the present invention preparation process

Method used

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  • Pavement brick prepared from construction waste recycled aggregate and preparation process thereof
  • Pavement brick prepared from construction waste recycled aggregate and preparation process thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0049] The utility model relates to a pavement brick prepared from construction waste recycled aggregate, which is composed of a surface layer and a bottom layer.

[0050] Wherein, the surface layer is made of the following raw materials in mass percentage: 25% of cement, 62% of tailing sand and 13% of water. Among them, the particle size of tailings sand is less than 5mm.

[0051] The bottom layer is made of the following raw materials in mass percentage: 12% of cement, 48% of brick-concrete mixed recycled aggregate, 26% of concrete recycled aggregate, 4% of mineral admixture, and 10% of water.

[0052] Among them, the mineral admixture is composed of 47% limestone powder, 33% natural pozzolan and 20% slag.

[0053] The particle size of the brick-concrete mixed recycled aggregate is less than 5mm, and the particle size of the concrete recycled aggregate is 3-8mm.

[0054] The total thickness of the above-mentioned paving bricks is 50mm, wherein the thickness of the surface ...

Embodiment 2

[0062] The utility model relates to a pavement brick prepared from construction waste recycled aggregate, which is composed of a surface layer and a bottom layer.

[0063] Wherein, the surface layer is made of the following raw materials in mass percentage: 22% of cement, 68% of tailing sand and 10% of water. Among them, the particle size of tailings sand is less than 5mm.

[0064] The bottom layer is made of the following raw materials in mass percentage: 14% of cement, 46% of brick-concrete mixed recycled aggregate, 29% of concrete recycled aggregate, 3% of mineral admixture, and 8% of water.

[0065] Among them, the mineral admixture is composed of 55% limestone powder, 31% natural pozzolan and 14% slag.

[0066] The particle size of the brick-concrete mixed recycled aggregate is less than 5mm, and the particle size of the concrete recycled aggregate is 3-8mm.

[0067] The total thickness of the above-mentioned paving bricks is 50mm, wherein the thickness of the surface l...

Embodiment 3

[0075] The utility model relates to a pavement brick prepared from construction waste recycled aggregate, which is composed of a surface layer and a bottom layer.

[0076] Wherein, the surface layer is made of the following raw materials in mass percentage: 29% of cement, 63% of tailing sand and 8% of water. Among them, the particle size of tailings sand is less than 5mm.

[0077] The bottom layer is made of the following raw materials in mass percentage: 15% of cement, 47% of brick-concrete mixed recycled aggregate, 25% of concrete recycled aggregate, 5% of mineral admixture, and 8% of water.

[0078] Among them, the mineral admixture is composed of 45% limestone powder, 34% natural pozzolan and 21% slag.

[0079] The particle size of the brick-concrete mixed recycled aggregate is less than 5mm, and the particle size of the concrete recycled aggregate is 3-8mm.

[0080] The total thickness of the above-mentioned paving bricks is 63mm, wherein the thickness of the surface la...

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Abstract

The invention provides a pavement brick prepared from construction waste recycled aggregate and a preparation process of the pavement brick. The pavement brick is a recycled aggregate pavement brick with a surface layer. The surface layer mainly comprises the following raw materials in percentage by mass: 22-29% of cement, 62-70% of natural aggregate and 6-13% of water. And the bottom layer mainlycomprises the following raw materials in percentage by mass: 12-15% of cement, 46-52% of brick-concrete mixed recycled aggregate, 21-29% of concrete recycled aggregate, 3-6% of mineral admixture and8-10% of water. The pavement brick provided by the invention has better appearance quality, higher compressive strength, higher freezing resistance and lower water absorption, the construction waste is fully utilized while the pavement brick with excellent performance is prepared, and the full utilization of resources is ensured.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a pavement brick prepared from recycled construction waste aggregates and a preparation process thereof. Background technique [0002] With the rapid development of urban infrastructure and the continuous strengthening of people's awareness of environmental protection, the effective management of construction waste has become one of the important contents that cannot be ignored in urban development. As a solid material with a certain strength, construction waste has gradually been recognized by people, and it is regarded as "misplaced resources". [0003] Cement-based materials (ordinary concrete, lightweight aggregate concrete, cement mortar, etc.), sintered materials (sintered bricks, clay tiles, ceramic tiles, etc.), and natural stone materials contained in construction waste can be recycled, processed and strengthened. The obtained recycled products can be used as new concr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/10C04B18/16B28B1/087B28B17/02
CPCC04B28/04C04B28/10C04B18/16B28B1/0873B28B17/02C04B2201/50C04B2111/0075C04B18/12C04B22/002C04B7/02C04B14/28C04B18/141C04B14/14Y02W30/91
Inventor 王淼李岩凌周伟刘文才何强
Owner BCEG RESOURCES RECYCLING CO LTD
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