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Construction waste recycled brick and manufacturing process thereof

A technology of construction waste and regenerated bricks, which is applied in the field of construction waste recycling and can solve the problems of low compressive strength

Pending Publication Date: 2021-09-14
长沙工研院环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low compressive strength existing in existing construction waste bricks, the object of the present invention is to provide a construction w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Firstly, the construction waste is manually sorted to remove large objects (including steel bars, scraps, wood blocks, etc.), and the recycled coarse aggregate with a particle size of 150-200mm is obtained after primary crushing, and then the recycled coarse aggregate is processed One-time iron removal to remove iron filings in the recycled coarse aggregate; part of the recycled coarse aggregate after the first-time iron removal is subjected to secondary crushing to obtain recycled fine aggregate, and then the recycled fine aggregate is subjected to secondary iron removal to further remove the recycled fine aggregate. Iron filings in aggregate; regenerated fine aggregate after secondary iron removal is sieved to obtain 0-0.3mm, 0.3-0.6mm, 0.6-1.18mm, 1.18-2.36mm, 2.36-4.75mm and 4.75-8mm six The fine aggregates of different particle sizes in each interval are graded (the mass ratio of fine aggregates in six different particle size intervals is 5%: 10%: 20%: 30%: 20%:...

Embodiment 2

[0024] (1) Firstly, the construction waste is manually sorted to remove large objects (including steel bars, scraps, wood blocks, etc.), and the recycled coarse aggregate with a particle size of 150-200mm is obtained after primary crushing, and then the recycled coarse aggregate is processed One-time iron removal to remove iron filings in the recycled coarse aggregate; part of the recycled coarse aggregate after the first-time iron removal is subjected to secondary crushing to obtain recycled fine aggregate, and then the recycled fine aggregate is subjected to secondary iron removal to further remove the recycled fine aggregate. Iron filings in aggregate; regenerated fine aggregate after secondary iron removal is sieved to obtain 0-0.3mm, 0.3-0.6mm, 0.6-1.18mm, 1.18-2.36mm, 2.36-4.75mm and 4.75-8mm six The fine aggregates of different particle sizes in each interval are graded (the mass ratio of fine aggregates in six different particle size intervals is 10%: 10%: 30%: 30%: 10%...

Embodiment 3

[0028] (1) Firstly, the construction waste is manually sorted to remove large objects (including steel bars, scraps, wood blocks, etc.), and the recycled coarse aggregate with a particle size of 150-200mm is obtained after primary crushing, and then the recycled coarse aggregate is processed One-time iron removal to remove iron filings in the recycled coarse aggregate; part of the recycled coarse aggregate after the first-time iron removal is subjected to secondary crushing to obtain recycled fine aggregate, and then the recycled fine aggregate is subjected to secondary iron removal to further remove the recycled fine aggregate. Iron filings in aggregate; regenerated fine aggregate after secondary iron removal is sieved to obtain 0-0.3mm, 0.3-0.6mm, 0.6-1.18mm, 1.18-2.36mm, 2.36-4.75mm and 4.75-8mm six The fine aggregates of different particle sizes in each interval are graded (the mass ratio of fine aggregates in six different particle size intervals is 5%: 10%: 20%: 30%: 20%:...

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Abstract

The invention discloses a construction waste recycled brick and a manufacturing process thereof. The construction waste recycled brick is prepared from recycled aggregate, cement, a mineral admixture, an additive and water, wherein the mass ratio of the recycled aggregate to the cement to the mineral admixture to the additive to the water is 1: (1-2): (0.2-0.6): (0.5-1): (5-10); the particle size of the recycled aggregate is divided into six sections, namely, 0 to 0.3 mm, 0.3 to 0.6 mm, 0.6 to 1.18 mm, 1.18 to 2.36 mm, 2.36 to 4.75 mm and 4.75 to 8 mm, and the mass ratio of the sections is (5-10%): (10-15%): (20-30%): (30-40%): (10-20%): (10-15%). The construction waste baking-free brick with the compressive strength not less than 15MPa can be obtained by taking the construction waste as a raw material.

Description

technical field [0001] The invention belongs to the technical field of construction waste recycling, and in particular relates to a construction waste regenerated brick and a manufacturing process thereof. Background technique [0002] With the improvement of the overall quality and living standards of our people, people's awareness of the rational use of land resources and environmental protection has been further enhanced, especially the materials used in the construction industry are developing towards green and environmental protection. As a substitute material for natural soil, construction waste is used to make bricks, which greatly reduces the dependence of bricks on natural soil, thus effectively protecting the natural soil and fundamentally curbing the problem of excessive soil digging. However, due to the aggregate grading, batching formula, brick-making process and other reasons for the preparation of bricks from construction waste, the compressive strength is low...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/16
CPCC04B28/04C04B18/16C04B2201/50C04B18/141C04B24/24Y02W30/91
Inventor 贺升万飞何曦
Owner 长沙工研院环保有限公司
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