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Self-repairing concrete taking recycled coarse aggregate as carrier and preparation method of self-repairing concrete

A recycled coarse aggregate and self-repairing technology, which is applied in the field of special building materials, can solve the problems of thick carrier modifier and inconvenient operation, etc., and achieve the effect of good concrete structure performance

Active Publication Date: 2019-11-08
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its carrier modifier is thick and inconvenient to handle

Method used

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  • Self-repairing concrete taking recycled coarse aggregate as carrier and preparation method of self-repairing concrete
  • Self-repairing concrete taking recycled coarse aggregate as carrier and preparation method of self-repairing concrete
  • Self-repairing concrete taking recycled coarse aggregate as carrier and preparation method of self-repairing concrete

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Embodiment 1

[0041] The self-repairing concrete added with self-repairing regenerated coarse aggregate in this embodiment includes concrete ingredients and self-repairing regenerated coarse aggregate. In terms of volume percentage, the self-repairing regenerated coarse aggregate accounts for 15%, 25%, and 35% of the self-repairing concrete % and 45%; in terms of mass ratio, the mixing ratio of sand, stone, cement and water in concrete is 3.10:1.75:1.00:0.50, and the self-repairing regenerated coarse aggregate is the regenerated coarse aggregate loaded with Bacillus pasteurianus.

[0042] A method for making self-repairing concrete with added self-repairing recycled coarse aggregate, comprising steps:

[0043] Step 1. The recycled coarse aggregate is taken from the concrete construction waste after the demolition of conventional civil and commercial buildings. After crushing, the particle size of the recycled coarse aggregate is 5-10mm gravel, and the apparent density is 2458kg / m 3 , the cr...

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Abstract

The invention discloses self-repairing concrete taking a recycled coarse aggregate as a carrier and a preparation method of the self-repairing concrete. The self-repairing concrete comprises concreteingredients and a self-repairing recycled coarse aggregate, wherein the self-repairing recycled coarse aggregate accounts for 15-45% of the self-repairing concrete in percentage by volume. The self-repairing recycled coarse aggregate is prepared by impregnating a recycled coarse aggregate into a bacillus pasteuricus liquid, wherein the optical density (OD) value of the bacillus pasteuricus liquidis 1-1.2, and the volume mixing amount of the bacillus pasteuricus liquid is 30% based on cement in the concrete. According to the invention, the recycled coarse aggregate carrier is adopted, so thatthe problems of low mechanical strength of carriers, poor retention degree of microbial activity and inconvenient operation in the use processes of other carriers are solved, and the effects that construction wastes are recycled and structural performance of the microbial self-repairing concrete is good are also achieved.

Description

technical field [0001] The invention belongs to the technical field of special building materials, in particular to a self-repairing concrete with recycled coarse aggregate as a carrier and a preparation method thereof. Background technique [0002] With the progress of the times and the continuous advancement of urbanization, a large number of new urban complexes continue to emerge. At the same time, the existing cities are constantly updating the landmark buildings and their radiating areas. This has led to the demand for a large number of building material resources. In addition, the continuous increase in population density has also greatly accelerated the construction waste generated by construction and demolition due to the surge in housing, restaurants, medical services, and other public facilities. Big data statistics in the past ten years around the world indicate that a large amount of construction waste is produced, accompanied by random disposal of construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/16C04B20/10
CPCC04B18/16C04B20/10C04B28/04C04B14/00C04B14/06C04B22/002Y02W30/91
Inventor 刘超吕振源刘化威朱超
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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