Method for preparing regenerated pervious concrete

A technology of permeable concrete and waste concrete blocks, which is applied in ceramic products, sustainable waste treatment, solid waste management, etc. It can solve the problems of poor corrosion, easy clogging of pores, poor durability, etc., and achieve good corrosion resistance and improve The effect of service life

Inactive Publication Date: 2017-09-01
汪逸凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a regenerated permeable concrete for the existing pervious concr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] Weigh 200kg of waste concrete block and add it to jaw crusher to crush. After magnetic separation, the crushed material is soaked in water to remove floating impurities. Then filter residue is obtained by filtering. After natural air drying, the filter residue is added to the crusher for crushing and screening out Granules with a particle size of 5mm, and then add the selected granules to a horizontal grinder to grind for 2 hours to obtain recycled aggregates. Take 0.3kg sodium lauryl sulfate, 0.1kg sodium gluconate, and 0.4kg sodium silicate. , 0.8kg polyacrylamide, add 150L of deionized water, stir at 200r / min for 10min, then add 80kg of recycled aggregate, continue to stir for 20min, then let stand for 1h, then filter to obtain a filter cake, and air dry the filter cake to obtain enhanced regeneration Aggregate, weigh 15kg of discarded oyster shells, wash them with water, place them in a drying box, and dry them to constant weight at 105°C, then trans...

Example Embodiment

[0020] Example 2

[0021] Weigh 250kg of waste concrete blocks and add them to a jaw crusher to crush them. After magnetic separation, the crushed materials are soaked in water to remove floating impurities. Afterwards, they are filtered to obtain filter residue. After natural air drying, the filter residue is added to the crusher to be crushed and filtered out. Granules with a particle size of 8mm are added to the horizontal grinder to grind for 2 hours to obtain recycled aggregates. Take 0.4kg sodium lauryl sulfate, 0.2kg sodium gluconate, and 0.5kg sodium silicate. , 1.0kg polyacrylamide, add 175L deionized water, stir at 250r / min for 15min, then add 90kg of recycled aggregate, continue to stir for 25min, then let stand for 1h, then filter to obtain a filter cake, and air dry the filter cake to obtain enhanced regeneration Aggregate, weigh 18kg of discarded oyster shells, wash them with water, place them in a drying box, and dry them to constant weight at 108°C, then transfer ...

Example Embodiment

[0023] Example 3

[0024] Weigh 300kg of discarded concrete blocks and add them to a jaw crusher to crush them. After magnetic separation, the crushed materials are soaked in water to remove floating impurities. Then filter residues. After natural air drying, the filter residues are added to the crusher to be crushed. Granules with a particle size of 10mm, and then add the selected granules to a horizontal grinder to grind for 3 hours to obtain recycled aggregates. Take 0.5kg sodium lauryl sulfate, 0.3kg sodium gluconate, and 0.6kg sodium silicate. , 1.2kg of polyacrylamide, add 200L of deionized water, stir at 300r / min for 20min, then add 100kg of recycled aggregate, continue to stir for 30min, then let stand for 2h, then filter to obtain a filter cake, the filter cake is naturally air-dried to obtain enhanced regeneration Aggregate, weigh 20 kg of discarded oyster shells, wash them with water, place them in a drying box, and dry them to constant weight at 110°C, then transfer t...

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PUM

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Abstract

The invention discloses a method for preparing regenerated pervious concrete, and belongs to the technical field of building material preparation. The method comprises the following steps: taking waste concrete blocks as a raw material, performing crushing, removing foreign matters, and grinding to obtain recycled aggregate; preparing a solution from lauryl sodium sulfate, sodium gluconate and the like, mixing with the recycled aggregate, filtering, drying filter dregs in air, preparing intensified recycled aggregate, mixing and grinding waste oyster shells, coal ash, silica ash and the like to obtain a mixed powder material, finally stirring the prepared mixed powder material, the intensified recycled aggregate, ordinary Portland cement and the like, further adding a polycarboxylate superplasticizer and deionized water, mixing, and discharging, thereby obtaining the regenerated pervious concrete. On premise that the porosity and the pervious coefficient of the regenerated pervious concrete are remarkably higher than those of common previous concrete, the compression strength of the regenerated pervious concrete is still higher than that of the common previous concrete, good corrosion properties are achieved, and thus the service life of a previous concrete pavement is remarkably prolonged.

Description

technical field [0001] The invention discloses a method for preparing recycled permeable concrete, which belongs to the technical field of building material preparation. Background technique [0002] In modern urban construction, most pavements are paved with stone slabs, cement and cement square bricks. Although the hardened pavement is neat and durable, it lacks the ability to breathe, absorb heat and penetrate rainwater. A series of environmental problems, such as the interruption of the replenishment of groundwater by rainwater during rainfall, make it difficult for the groundwater level to rise. With the loss of rainwater, the surface of the city will become more dry, which will aggravate the hazards of urban dust pollution; on the other hand, when the rainfall is heavy, the urban drainage will be poor, which will easily cause urban floods and serious consequences of poor traffic. Secondly, the hardened pavement will also cause many environmental and ecological negativ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02C04B38/00C04B18/16C04B111/20
CPCC04B20/023C04B28/04C04B2111/00284C04B2111/0075C04B2111/20C04B2201/50C04B16/0625C04B2103/302C04B14/28C04B18/08C04B18/146C04B18/16C04B38/0038C04B38/0074Y02W30/91
Inventor 汪逸凡杨阳孙冬
Owner 汪逸凡
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