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A kind of fine powder of construction waste and its application

A construction waste and fine grinding technology, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as construction waste safety hazards, reduce soil production capacity, and affect air quality, so as to highlight cost advantages , promote the smooth implementation of the sustainable development strategy, and reduce the effect of environmental pollution

Active Publication Date: 2017-02-22
蒋博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, after a large amount of land is piled with construction waste, it will reduce the quality of the soil and reduce the production capacity of the soil; the construction waste is piled in the air, which affects the air quality, and some dust particles will be suspended in the air, which is harmful to human health; Medium and long-term accumulation is the harmful substances of construction waste infiltrating into the groundwater and polluting the water environment; if construction waste is piled up in the city, it is not good for the urban environment and aesthetics; some accidents may happen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Road base subbase lime industrial waste slag stabilized soil with construction waste grinding powder: waste bricks and tiles, waste concrete, waste foamed bricks, after selection, do not contain sawdust, plastics, metals and other sundries, according to 50% of waste bricks and tiles, waste bricks and tiles, waste Concrete 30% and waste foam brick 20% are mixed and crushed by jaw crusher to particle size (30-50) mm, then crushed by cone crusher or sand making machine to 0-5 mm, and then crushed by ball mill As fine as 70% of the product passed through a 0.075mm mesh.

Embodiment 2

[0023] Example 2: 0.8MPa fly ash graded crushed stone

[0024] 1. Material requirements:

[0025] 1. The road base and sub-base lime industrial waste slag stabilized soil with construction waste grinding powder: waste bricks and tiles, waste concrete and waste foamed bricks must not contain sawdust, plastics, metals and other sundries, according to 50% of waste bricks and tiles, 30% of waste concrete %, 20% ratio of waste foam bricks are mixed, the crushing method is the same as that of Example 1, and they are ground together until 70% pass through the 0.075mm sieve hole.

[0026] 2. Quicklime: It meets the technical requirements of "Technical Specifications for Construction of Highway Pavement Base", and the effective calcium and magnesium content is greater than 70%.

[0027] 3. Aggregate: Comply with the technical requirements of "Technical Specifications for Construction of Highway Pavement Base", the maximum particle size shall not exceed 37.5mm.

[0028] 2. Formula (am...

Embodiment 3

[0042] Example 3 0.9MPa fly ash graded crushed stone

[0043] 1. Material requirements:

[0044] 1. The road base and sub-base lime industrial waste slag stabilized soil with construction waste grinding powder: waste bricks and tiles, waste concrete and waste foamed bricks must not contain sawdust, plastics, metals and other sundries, according to 50% of waste bricks and tiles, 30% of waste concrete %, 20% ratio of waste foam bricks are mixed, the crushing method is the same as that of Example 1, and they are ground together until 70% pass through the 0.075mm sieve hole.

[0045] 2. Quicklime: It meets the technical requirements of "Technical Specifications for Construction of Highway Pavement Base", and the effective calcium and magnesium content is greater than 70%.

[0046] 3. Aggregate: Comply with the technical requirements of "Technical Specifications for Construction of Highway Pavement Base", the maximum particle size shall not exceed 37.5mm.

[0047] 2. Formula (amo...

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PUM

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Abstract

The invention belongs to the field of road engineering, and discloses construction waste pulverized powder which comprises pulverized powder of one or more of waste concrete, waste bricks and tiles and waste foamed bricks, wherein the pulverized powder of the waste bricks and tiles accounts for 40-70% of the weight of the construction waste pulverized powder; the pulverized powder of the waste concrete accounts for 20-30% of the weight of the construction waste pulverized powder; the pulverized powder of the waste foamed bricks accounts for 10-30% of the weight of the construction waste pulverized powder. Compared with conventional stabilized soil, the construction waste pulverized powder disclosed by the invention has the characteristics that the overall strength and the compactness are improved, and the construction waste pulverized powder is applicable to high-level road construction, applicable to popularization and application in cities that coal-fired power generation is reduced, and has the cost advantage.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a material containing construction waste and its application. Background technique [0002] According to the definition in "Technical Specifications for Construction of Highway Pavement Base", the road base is the main load-bearing layer paved with high-quality materials under the asphalt surface or concrete layer, and the road sub-base is under the base, paved with inferior materials The secondary load-bearing layer of the building. In the prior art, paving materials used for road base and subbase include cement stabilized soil, lime stabilized soil and lime industrial waste residue stabilized soil. Among them, lime industrial waste stabilized soil refers to a certain amount of lime and fly ash combined with other aggregates (soil, sand, crushed stone, gravel), and an appropriate amount of water is added, which is obtained after mixing, compacting and curing. Mixtur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/16
CPCY02W30/91
Inventor 蒋博
Owner 蒋博
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