Self-repairing load-bearing block with recycled fine aggregate as carrier and preparation method thereof

Abstract

The invention discloses a self-repairing load-bearing block with recycled fine aggregate as a carrier and a preparation method thereof. The raw materials for preparing the self-repaired load-bearing block include concrete ingredients and self-repaired regenerated fine aggregate, calculated by volume percentage, The self-repairing regenerated fine aggregate accounts for 15% to 30% of the raw materials for the preparation of self-repairing load-bearing blocks; the self-repairing regenerated fine aggregate is made by impregnating the regenerated fine aggregate into a Bacillus pasteurian bacteria liquid; The OD value of the liquid is 1.25-1.40, and the cement in the concrete batching is used as the calculation basis, and the volume dosage of the bacillus pasteurian liquid is 35%. The invention creatively solves the problem that the load-bearing block cracks under the normal use limit load and cannot be effectively repaired, such as durability recovery, impermeability recovery and apparent crack filling, etc., and at the same time reduces the number of times The huge cost of manual repair.

Description

technical field [0001] The invention belongs to the field of green building materials, in particular to a self-repairing load-bearing block with recycled fine aggregate as a carrier and a preparation method thereof. Background technique [0002] With the continuous development of economy and society and the acceleration of urbanization in my country, urban scale and new building systems are constantly emerging. At the same time, existing urban building complexes are constantly being updated to accommodate the explosive growth of the population. All of the above have resulted in a large amount of urban construction waste, which in turn has caused serious harm to the environment. Western countries such as the United States and Japan are the first countries to use construction waste for recycling. They recycled, crushed and sorted the waste concrete from abandoned buildings to obtain recycled fine aggregates to make medium and low-strength C20-C50 concrete. my country has for...

AI Technical Summary

Problems solved by technology

[0005] At present, various internal and external factors can cause cracks in the wall. However, most of the repair methods after such cracks are passive and purposeful artificial repairs. Such repair methods are limited by technology and materials. Cracks are repaired. At the same time, cracks are very easy to crack again and still need to be repaired artificially. Such repeated cycles will definitely cause considerable economic losses.

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