Durable and permeable concrete based on multistage recycled aggregate and preparation method of concrete

A technology of permeable concrete and recycled aggregate, applied in the field of building materials, can solve the problems that the performance of permeable concrete is difficult to guarantee and affect the use effect, etc., and achieve the effects of precisely controlling water permeability and strength, improving compactness, and preventing cracks

Inactive Publication Date: 2017-03-08
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above prior art that in order to improve the utilization rate of resources in various industries, various wastes can be used to prepare pervious concrete. Although the utilization rate of resources can be improved, the performance of pervious concrete is difficult to guarantee, especially its durability. Therefore, it is necessary to make full use of waste and improve the durability of permeable concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Mix waste bricks from construction waste with a strength higher than 10MPa and waste concrete at a mass ratio of 1:0.8, manually crush them, and sieve them into three ranges of 5-10mm, 10-20mm, and 20-30mm, and then wash and dry to form Regenerated aggregate, wherein the mass ratio of 5-10mm grade, 10-20mm grade and 20-30mm grade in the recycled aggregate is 1:1:1.5.

[0027] (2) In parts by weight, wash and dry 20 parts of slag and 15 parts of steel slag, mix with 10 parts of silica fume, 20 parts of polyethylene oxide and 30 parts of water, and stir evenly to form a binder. Then, the ratio of solid to liquid is 1g:3ml, add recycled aggregate, stir evenly, and let it stand for 20 minutes to form modified recycled aggregate.

[0028] (3) In parts by weight, add 10 parts of natural aggregate to 20 parts of modified recycled aggregate, stir well, add 30 parts of fly ash portland cement, 5 parts of polyethylene fiber, 1 part The superplasticizer and 20 parts of water ...

Embodiment 3

[0034] (1) Mix waste bricks from construction waste with a strength higher than 10MPa and waste concrete at a mass ratio of 1:1, manually crush them, and sieve them into three ranges of 5-10mm, 10-20mm, and 20-30mm, and then wash and dry to form Regenerated aggregate, wherein the mass ratio of 5-10mm grade, 10-20mm grade and 20-30mm grade in the recycled aggregate is 1:1.1:1.6.

[0035] (2) In parts by weight, wash and dry 25 parts of slag and 20 parts of steel slag, mix with 12 parts of silica fume, 30 parts of polyethylene oxide and 40 parts of water, and stir evenly to form a binder. Then, the ratio of material to liquid is 1g:4ml, add recycled aggregate, stir evenly, and let it stand for 50 minutes to form modified recycled aggregate.

[0036] (3) In parts by weight, add 15 parts of natural aggregate to 30 parts of modified recycled aggregate, stir well, add 40 parts of fly ash Portland cement, 10 parts of polyethylene fiber, 2 parts The superplasticizer and 25 parts of w...

Embodiment 4

[0038](1) Mix waste bricks from construction waste with a strength higher than 10MPa and waste concrete at a mass ratio of 1:1.1, manually crush them, and sieve them into three ranges of 5-10mm, 10-20mm, and 20-30mm, and then wash and dry to form Regenerated aggregate, wherein the mass ratio of 5-10mm grade, 10-20mm grade and 20-30mm grade in the recycled aggregate is 1:1.1:1.8.

[0039] (2) In parts by weight, wash and air-dry 25 parts of slag and 18 parts of steel slag, mix with 12 parts of silica fume, 35 parts of polyethylene oxide and 45 parts of water, and stir evenly to form a binder. Then, the ratio of solid to liquid is 1g:3.5ml, add recycled aggregate, stir evenly, and let it stand for 30 minutes to form modified recycled aggregate.

[0040] (3) In parts by weight, add 15 parts of natural aggregate to 30 parts of modified recycled aggregate, stir well, add 45 parts of fly ash Portland cement, 8 parts of polyethylene fiber, 2 parts The superplasticizer and 27 parts o...

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Abstract

The invention provides a preparation method of durable and permeable concrete based on multistage recycled aggregate. The method comprises steps as follows: construction waste bricks and waste concrete are manually crushed, sieved in three ranges of 5-10 mm, 10-20 mm and 20-30 mm, washed and aired to form recycled aggregate; industrial waste slag and steel slag are washed clean, aired and mixed with silica fume, polyethylene oxide and water to form an adhesive after stirring, recycled aggregate is added, and the mixture is stirred and left to stand to form modified recycled aggregate; natural aggregate is added to the modified recycled aggregate and turned over uniformly, cement, polyethylene fibers, a water reducer and water are added, the mixture is stirred and subjected to layering mold charging, stirring formation, compaction and curing, and the durable and pervious concrete based on the multistage recycled aggregate is obtained. The permeable concrete prepared with the method contains multistage pores and has good water permeability, mechanical strength and excellent durability.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a durable permeable concrete based on multi-stage recycled aggregates and a preparation method thereof. Background technique [0002] With the progress of society and the continuous innovation of science and technology, in order to meet the convenience of people's work and life, many technologies and concepts have emerged as the times require, and the utilization of resources is becoming more and more diversified. Moreover, with the construction and development of the city, the surface of the city is gradually covered by reinforced concrete, and the impermeable pavement hinders the circulation of surface water and groundwater, resulting in a large waste of instantaneous water resources and the depletion of groundwater, so permeable concrete has become the main improvement Ways, permeable concrete can make the city elastic like a sponge, adapt to environmental changes and respond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B18/16C04B20/00C04B16/06C04B111/40
CPCC04B16/0625C04B18/16C04B20/0076C04B28/021C04B2111/00284C04B2111/40C04B2201/50C04B18/141C04B18/142C04B18/146C04B24/281C04B22/002C04B14/02C04B2103/302Y02W30/91
Inventor 王文庆
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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