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Self-repairing facing mortar taking recycled fine aggregate as carrier and preparation method

A technology for regenerating fine aggregate and veneer mortar, applied in the field of intelligent building materials, can solve the problems of thick carrier modifier and inconvenient operation, and achieve the effect of improving the serviceability of the structure

Active Publication Date: 2019-11-22
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its carrier modifier is thick and inconvenient to handle
At the same time, there is no practical application of self-repairing mortar, and most of them use the method of plastering the surface after cracking, but this is difficult to solve the fundamental problem of internal cracks

Method used

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  • Self-repairing facing mortar taking recycled fine aggregate as carrier and preparation method
  • Self-repairing facing mortar taking recycled fine aggregate as carrier and preparation method
  • Self-repairing facing mortar taking recycled fine aggregate as carrier and preparation method

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Embodiment 1

[0036] The self-repairing finishing mortar added with self-repairing regenerated fine aggregate of the present embodiment includes finishing mortar ingredients and self-repairing regenerated fine aggregate, and by volume percentage, the self-repairing regenerated fine aggregate accounts for 10% of the self-repairing facing mortar %, 20% and 30%; the self-repairing recycled fine aggregate is the recycled fine aggregate loaded with Bacillus pasteurianus.

[0037] A method for making a self-repairing facing mortar with self-repairing recycled fine aggregate, comprising steps:

[0038] Step 1. The recycled fine aggregate is taken from the concrete waste after the demolition of conventional civil and commercial buildings, and the particle size of the recycled fine aggregate is 0.25-0.95mm; the apparent density is 2387kg / m 3 , bulk density is 1323kg / m 3 , the crush index is 23.6%, and the void ratio is 47.2%;

[0039] Step 2. The self-repairing regenerated fine aggregate is made b...

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Abstract

The invention discloses self-repairing facing mortar taking a recycled fine aggregate as a carrier and a preparation method. The self-repairing facing mortar comprises facing mortar ingredients and the self-repairing recycled fine aggregate, wherein the self-repairing recycled fine aggregate accounts for 10%-30% of the self-repairing facing mortar in percentage by volume; the self-repairing recycled fine aggregate is prepared by dipping the recycled fine aggregate into a Bacillus pasteurii liquid; the OD value of the Bacillus pasteurii liquid is 1-1.2; and the volume mixing amount of the Bacillus pasteurii liquid is 30% by taking cement in concrete as a calculation reference. The recycled fine aggregate carrier is adopted, the problems that when facing mortar cracks, plastering covering can only be conducted again in the later period, maintenance operation is inconvenient, and the surface is not attractive in the prior art are solved, and the self-repairing facing mortar achieves effects of improving the structure serviceability, and effects of construction waste recycling and microorganism self-repairing.

Description

technical field [0001] The invention belongs to the technical field of intelligent building materials, in particular to a self-repairing facing mortar with recycled fine aggregate as a carrier and a preparation method thereof. Background technique [0002] With the construction of urban and rural areas and the location of a large number of hardcover infrastructure, a large amount of sand and gravel resources are in demand. In addition, people's increasing material and cultural needs stimulate the growth of catering, entertainment facilities and other public facilities, which also greatly accelerates the process of construction and demolition cycle, which leads to the scarcity of natural resources. Non-standard disposal of construction waste will lead to lack of landfill space and environmental degradation. Recycled fine aggregate, taken from abandoned buildings, is a product formed after hydration and condensation of natural aggregate with a particle size of less than 5mm a...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B20/10C04B111/72
CPCC04B20/1018C04B28/02C04B2111/00508C04B2111/72C04B18/16C04B14/06C04B2103/0001
Inventor 刘超余伟航吕振源
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY