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Building garbage concrete-brick mixed self-repairing concrete and preparation method thereof

A self-healing, concrete technology, applied in the field of intelligent building materials, can solve problems such as unreported

Active Publication Date: 2019-11-15
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the research on the preparation of self-healing concrete by combining the interface of recycled coarse aggregate and the porosity of brick aggregate has not been reported.

Method used

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  • Building garbage concrete-brick mixed self-repairing concrete and preparation method thereof
  • Building garbage concrete-brick mixed self-repairing concrete and preparation method thereof
  • Building garbage concrete-brick mixed self-repairing concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment includes the following steps:

[0042] Recycled coarse aggregate and recycled brick aggregate are obtained from residential or commercial construction waste:

[0043] (1) Regenerated coarse aggregate and recycled brick aggregate are crushed stone and brick crushed by a jaw crusher, and the sieved particle size is 5-15mm;

[0044] (2) Bacillus Pasteurella was purchased from Shaanxi Provincial Institute of Microbiology. The microbial culture medium was cultured according to the conventional culture method, with a pH value of 7, shake culture for 12 hours, and place it at low temperature (0-4°C) for 12 hours before vacuum impregnation. Hours later, the bacterial solution was diluted to an OD value of 1.3, and the concentration of Bacillus pasteurianus was 10 10 cell / mL. The microbial culture medium is composed of organic protein mixed with sodium carbonate solution and sodium bicarbonate solution. The mass ratio of organic protein and inorganic sodium sal...

Embodiment 2

[0050] This embodiment provides a self-repairing concrete mixed with concrete and bricks in construction waste, wherein the mass ratio of water, cement, sand and stone is 0.41:1.00:1.14:2.94.

[0051] The preparation method of the concrete-brick mixed self-repairing concrete is basically the same as that of Example 1; the difference is that the total volume of the self-repairing recycled concrete-brick mixture accounts for 15% of the raw materials for self-repairing concrete preparation.

Embodiment 3

[0053] This embodiment provides a self-repairing concrete mixed with concrete and bricks in construction waste, wherein the mass ratio of water, cement, sand and stone is 0.41:1.00:1.14:2.80.

[0054] The preparation method of the above-mentioned concrete-brick mixed self-repairing concrete is basically the same as that of Example 1; the difference is that the total volume of the self-repairing recycled concrete-brick mixture accounts for 45% of the raw materials for preparing the self-repairing concrete.

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Abstract

The invention discloses building waste concrete-brick mixed self-repairing concrete and a preparation method thereof. The preparation raw materials of the self-repairing concrete comprise a concrete and self-repairing recycled concrete-brick mixture, and the self-repairing recycled concrete-brick mixture accounts for 15%-45% of the self-repairing concrete in percentages by volume; the volume ratioof self-repairing recycled coarse aggregates to self-repairing recycled brick aggregates is 1-4: 1-3; the self-repairing recycled coarse aggregates are prepared by impregnating the recycled coarse aggregates with bacillus pasteurii liquid, and the self-repairing recycled brick aggregates are prepared by impregnating recycled brick aggregates with the bacillus pasteurii liquid; the OD value of thebacillus pasteurii liquid is 1-1.3; in terms of mass percentage, the mass content of the bacillus pasteurii liquid accounts for 0.065% of the recycled coarse aggregates, and the mass content of the bacillus pasteurii liquid accounts for 0.085% of the brick aggregates. The building waste concrete-brick mixed self-repairing concrete has the advantages of being high in repairing efficiency and beneficial to recycling application of construction wastes.

Description

technical field [0001] The invention belongs to the technical field of intelligent building materials, in particular to construction waste concrete-brick mixed self-repairing concrete and a preparation method thereof. Background technique [0002] With the continuous development of my country's urbanization process, the demolition of a large number of old buildings has brought an astonishing amount of construction waste, and the problem of ecological environment protection has become increasingly prominent. According to nationwide statistics, as of 2018, the total stock of construction waste in my country reached 3 billion tons, and it is estimated that by 2020, the total amount of construction waste in my country will exceed 5 billion tons. The traditional landfill method not only has high economic costs, but also brings secondary pollution to soil and groundwater resources due to the landfill of construction waste. Recycled coarse aggregate and bricks in construction wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/34
CPCC04B28/04C04B2111/00017C04B2111/343C04B2201/50C04B14/02C04B14/06C04B18/16C04B2103/0001
Inventor 刘超刘化威吕振源朱超
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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