Recycled brick aggregate permeable concrete and preparation method thereof

A technology of permeable concrete and recycled bricks, applied in the field of building materials, can solve the problems of polluting the environment, occupying land resources, urban environmental protection and adverse effects of construction, etc., achieving good effects, improving the density of the slurry, and improving the water storage capacity. Effects of Water Ability

Inactive Publication Date: 2019-10-15
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These construction wastes occupy a large amount of land resources and seriously pollute the environment, causing serious adverse effects on urban environmental protection and construction.

Method used

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  • Recycled brick aggregate permeable concrete and preparation method thereof
  • Recycled brick aggregate permeable concrete and preparation method thereof
  • Recycled brick aggregate permeable concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] A recycled brick aggregate water-permeable concrete, the proportion of recycled brick-aggregate water-permeable concrete in terms of mass includes:

[0033]

[0034] The preparation process of the recycled brick aggregate permeable concrete is as follows:

[0035] According to the saturated water absorption rate of the recycled brick aggregate, the recycled brick aggregate is pre-wet 20h in advance, and then placed in a mixer. The cement, lithium slag powder and silica fume are weighed in proportion and added to the forced mixer at a rate of 30r / min. Stir for 60s under the conditions, then add the recycled brick aggregate weighed in proportion and continue to stir for 90s, add water, polycarboxylic acid high-performance water reducing agent, and hydroxypropyl methylcellulose to the mixer at the same time and stir for 120s. Recycled brick aggregate permeable concrete.

example 2

[0037] A recycled brick aggregate concrete. The ratio of recycled brick aggregate concrete by mass includes:

[0038]

[0039]

[0040] The preparation process of the recycled brick aggregate concrete is as follows:

[0041] According to the saturated water absorption rate of the recycled brick aggregate, the recycled brick aggregate is pre-wet 24h in advance, and then placed in the mixer. The cement, lithium slag powder and silica fume are weighed in proportion and added to the forced mixer at a rate of 30r / min. Stir for 30s under the conditions, then add the recycled brick aggregate weighed in proportion and continue to stir for 60s. Add water, polycarboxylic acid high-performance water reducing agent, and hydroxypropyl methylcellulose into the mixer at the same time and stir for 150s. Recycled brick aggregate permeable concrete.

example 3

[0043] A recycled brick aggregate water-permeable concrete, the proportion of recycled brick-aggregate water-permeable concrete in terms of mass includes:

[0044]

[0045] The preparation process of the recycled brick aggregate concrete is as follows:

[0046] According to the saturated water absorption rate of the recycled brick aggregate, the recycled brick aggregate is pre-wet 30h in advance, and then placed in a mixer. The cement, lithium slag powder and silica fume are weighed in proportion and added to the forced mixer at a rate of 30r / min. Stir for 30s under the conditions, then add the recycled brick aggregate weighed in proportion and continue to stir for 90s, add water, polycarboxylic acid high-performance water reducing agent, and hydroxypropyl methylcellulose into the mixer at the same time and stir for 150s. Recycled brick aggregate permeable concrete.

[0047] Implementation Effect:

[0048]

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Abstract

The invention relates to recycled brick aggregate permeable concrete and a preparation method thereof. The recycled brick aggregate permeable concrete comprises the following components in parts by mass: 1150-1184 parts of a recycled brick aggregate, 201.3-276.3 parts of cement, 71.9-98.7 parts of lithium slag powder, 14.4-19.7 parts of silica fume, 72-98.7 parts of water, 0.06-0.08 part of hydroxypropyl methylcellulose and 0.92-1.26 parts of a polycarboxylate superplasticizer. The preparation method is as follows: 1) weighing the cement, the silica fume and the lithium slag powder according to proportion and mixed evenly; 2) weighing the recycled brick aggregate in proportion, adding the mixture obtained in the step 1), and stirring and mixing uniformly; (3) weighing the water, the hydroxypropyl methylcellulose and the polycarboxylate superplasticizer in proportion and adding into the mixture obtained in the step (2), and stirring and mixing evenly to obtain the recycled brick aggregate permeable concrete. The recycled brick aggregate permeable concrete has good adhesiveness, low dead weight, high water absorption, good water retention, good water purification effect, capability of adsorbing heavy metal ions and low cost, and can be widely applied to places such as river banks, slope protection, road base pavement and the like.

Description

Technical field [0001] The invention relates to a recycled brick aggregate water-permeable concrete and a preparation method thereof, and belongs to the technical field of building materials. Background technique [0002] With the advancement of China's urban modernization process, the construction solid waste generated in the process of urban construction, transformation and demolition is increasing, of which more than 40% are waste masonry and concrete blocks. These construction wastes occupy a large amount of land resources and seriously pollute the environment, causing serious adverse effects on urban environmental protection and construction. In addition, as the city's original ground is gradually covered by buildings and cement roads, more and more rainy days have "waterlogged" in the city, and the government has promoted the construction of "sponge cities". Based on the background of construction solid waste disposal and sponge city construction, aiming at the main charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00284C04B2201/50C04B18/16C04B18/144C04B18/146C04B24/383C04B24/24
Inventor 高建明杨锋陈雪梅陈高丰
Owner SOUTHEAST UNIV
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