High-strength alkali-inhibiting construction waste regenerated water permeable brick and preparation method thereof

A technology of construction waste and permeable bricks, applied in the field of building materials, can solve the problems of poor mechanical properties of recycled aggregates, low strength of recycled permeable bricks, high alkalinity, etc., to improve performance and service life, good pan-alkali resistance, Strong water absorption effect

Inactive Publication Date: 2021-11-02
BCEG RESOURCES RECYCLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention solves the problems of low strength and easy efflorescence of recycled permeable bricks due to poor mechanical properties and high alkalinity of recycled aggregates from construction waste

Method used

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  • High-strength alkali-inhibiting construction waste regenerated water permeable brick and preparation method thereof
  • High-strength alkali-inhibiting construction waste regenerated water permeable brick and preparation method thereof
  • High-strength alkali-inhibiting construction waste regenerated water permeable brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-strength anti-alkali construction waste recycled permeable brick, the permeable brick includes a base layer and a surface layer, and the base layer includes the following raw material components in parts by weight: 55 parts of recycled coarse aggregate from construction waste, 20 parts of recycled fine aggregate from construction waste , 25 parts of cement, 15 parts of fly ash, 10 parts of water, 0.02 part of reinforcing agent, 1.0 part of alkali suppressant, the surface layer includes the following raw material components in parts by weight: 75 parts of natural sand, 25 parts of cement, reinforcing agent 0.02 parts, 1.0 parts of base inhibitor.

[0029] The regenerated coarse aggregate of construction waste in this embodiment is the aggregate obtained by crushing and screening construction waste with a particle size of 5-10 mm, and the regenerated fine aggregate of construction waste is the particle size obtained after crushing and screening of construction waste...

Embodiment 2

[0036] A high-strength anti-alkali construction waste recycled permeable brick, the permeable brick includes a base layer and a surface layer, and the base layer includes the following raw material components in parts by weight: 60 parts of recycled coarse aggregate from construction waste, 5 parts of recycled fine aggregate from construction waste , 28 parts of cement, 3 parts of fly ash, 8 parts of water, 1.0 part of reinforcing agent, 0.02 part of alkali suppressant, described surface layer comprises the raw material component of following weight part: 72 parts of natural sand, 22 parts of cement, strengthening agent 1.0 part, 0.02 part of base inhibitor.

[0037]The regenerated coarse aggregate of construction waste in this embodiment is the aggregate obtained by crushing and screening construction waste with a particle size of 5-10 mm, and the regenerated fine aggregate of construction waste is the particle size obtained after crushing and screening of construction waste w...

Embodiment 3

[0041] A high-strength anti-alkali construction waste recycled permeable brick, the permeable brick includes a base layer and a surface layer, and the base layer includes the following raw material components in parts by weight: 77 parts of recycled coarse aggregate from construction waste, 15 parts of recycled fine aggregate from construction waste , 20 parts of cement, 5 parts of fly ash, 9 parts of water, 0.5 part of reinforcing agent, 0.5 part of alkali inhibitor, and described surface layer comprises the raw material component of following weight part: 80 parts of natural sand, 20 parts of cement, strengthening agent 0.5 parts, alkali inhibitor 0.5 parts.

[0042] The regenerated coarse aggregate of construction waste in this embodiment is the aggregate obtained by crushing and screening construction waste with a particle size of 5-10 mm, and the regenerated fine aggregate of construction waste is the particle size obtained after crushing and screening of construction wast...

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Abstract

The invention relates to a high-strength alkali-inhibiting construction waste recycled water permeable brick, which comprises a base layer and a surface layer, and the base layer comprises the following raw material components by weight: 50-80 parts of construction waste recycled coarse aggregate, 5-20 parts of construction waste recycled fine aggregate, 15-30 parts of cement, 3-15 parts of fly ash, 8-10 parts of water, 0.02-1.0 part of a reinforcing agent, and 0.02-1.0 part of an alkali inhibitor. The surface layer comprises the following raw material components in parts by weight: 70-85 parts of natural sand, 15-30 parts of cement, 0.02-1.0 part of a reinforcing agent and 0.02-1.0 part of an alkali inhibitor. According to the recycled water permeable brick prepared from the construction waste recycled aggregate, reduction and recycling of waste construction waste are achieved, and the recycled water permeable brick is green, energy-saving, high in porosity, high in water absorption, free of saltpetering, high in water permeability and high in compressive strength, the water permeability coefficient can reach 2.0 * 10 <-2 > cm / s or above, and the compressive strength can reach 40 MPa or above.

Description

technical field [0001] The invention relates to a high-strength alkali-suppressing construction waste recycled permeable brick and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] According to statistics, the discharge of construction waste in my country accounts for 30% to 40% of the total amount of urban waste, and more than 300 million tons of construction waste are newly generated every year. Part of the generated construction waste is used for backfilling, and most of it is directly transported to the suburbs or villages, where it is stacked in the open air or landfilled. This not only occupies arable land, consumes a lot of construction costs such as garbage removal and landfill, but also causes serious pollution to the atmosphere and waters, and destroys the natural ecological environment. With the continuous increase of national sponge city construction, permeable brick pavement, as the most common p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/06C04B28/08C04B28/02C04B28/26C04B18/16
CPCC04B28/04C04B28/06C04B28/08C04B28/021C04B28/26C04B18/16C04B2111/00612C04B2201/50C04B2111/00284C04B18/08C04B2103/302C04B18/146C04B14/068C04B24/04C04B7/32C04B18/12C04B14/303C04B14/106Y02W30/91
Inventor 王淼陈向杰李岩凌何强刘文才周伟
Owner BCEG RESOURCES RECYCLING CO LTD
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