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Waste alkaline residue recycling method and alkaline residue self-repairing cement-based material prepared by same

A cement-based material and self-repairing technology, applied in the field of building materials, can solve problems such as pollution in the surrounding sea area, and achieve the effects of high survival rate, high alkali resistance, and high survival rate.

Active Publication Date: 2020-10-30
HUAIYIN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal circumstances, the alkali slag is treated by accumulating on the surface, and a large amount of alkali slag is deposited to form a "white sea", causing pollution to the surrounding sea areas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a method for reusing waste alkali slag. First prepare the raw materials according to the following proportioning ratio: 1 part of ordinary Portland cement P.O. Mix it with cement and stir it evenly to obtain a dry material mixture, then add the pasteurized spore solution, and stir it evenly to obtain a cement slurry-experimental group B1 (alkali slag self-repairing cement-based material). After testing, the number of Pasteurella per milliliter of cement slurry was 10 9 indivual.

[0027] Make the control group mortar N1, use the same cement and water-cement ratio, and use ordinary fine sand with similar strength as the substitute of alkali slag to make the control group mortar. The specific composition of N1 is 1 part of ordinary Portland cement 42.5 cement, 0.35 part of water, and 0.35 part of fine sand.

[0028] The two groups were put into the mold and vibrated 60 times respectively, and were put into the standard curing box for curing for ...

Embodiment 2

[0032] This embodiment provides a method for reusing waste alkali slag. First, the raw materials are prepared according to the following proportioning ratio: 1 part of ordinary Portland cement P.O. Mix it with cement and stir evenly to obtain a dry material mixture, then add pasteurized spore solution, and stir evenly to obtain cement slurry-experimental group B2 (alkali slag self-repairing cement-based material). After testing, the number of Pasteurella per milliliter of cement slurry was 10 8 indivual.

[0033] Make the mortar N2 of the control group, use the same cement and water-cement ratio, and use ordinary fine sand with similar strength as the substitute of alkali slag to make the mortar of the control group. The specific composition of N2 is 1 part of ordinary Portland cement 42.5 cement, 0.40 part of water, and 0.35 part of fine sand.

[0034] The two groups were put into the mold and vibrated 60 times respectively, and were put into the standard curing box for cur...

Embodiment 3

[0038] This embodiment provides a method for reusing waste alkali slag. First, the raw materials are prepared according to the following proportioning ratio: 1 part of ordinary Portland cement P.O. Mix with cement and stir evenly to obtain a dry material mixture, then add the pasteurized spore solution, and stir evenly to obtain cement slurry-experimental group B3 (alkali slag self-repairing cement-based material). After testing, the number of Pasteurella per milliliter of cement slurry was 10 7 indivual.

[0039] Make the mortar N3 of the control group, use the same cement and water-cement ratio, and use ordinary fine sand with similar strength as the substitute of alkali slag to make the mortar of the control group. The specific components of N3 are 1 part of ordinary Portland cement 42.5 cement, 0.40 part of water, and 0.40 part of fine sand. Stir evenly into the mold and vibrate 60 times.

[0040]The two groups were put into the mold and vibrated 60 times respectively, a...

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Abstract

The invention discloses a waste alkaline residue recycling method and an alkaline residue self-repairing cement-based material prepared by the same. The method comprises the following steps: firstly,weighing the following components in parts by mass: 1-1.1 parts of cement, 0.30-0.45 part of spore solution and 0.35-0.4 part of alkaline residue, then uniformly mixing and stirring the alkaline residue and the cement, then adding the spore solution, and uniformly stirring to obtain the alkaline residue self-repairing cement-based material, wherein the number of the bacillus in each milliliter ofthe alkaline residue self-repairing cement-based material is 10<6>-10<9>. According to the invention, industrial waste residue-alkaline residue is used as a cement-based material additive, the problemof overhigh cost of a calcium source in a self-repairing cement-based material is perfected, the problem of insufficient utilization of the calcium source is balanced by using steelmaking industrialwaste residue blast furnace slag powder, and the cement-based material with self-repairing performance is prepared.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for reusing waste alkali slag and the prepared alkali slag self-repairing cement-based material. Background technique [0002] In engineering, many underground structures, such as roads, railways, tunnels, underground deep foundation pits, high-radioactive and high-pollution waste-based anti-landfill sites, have a long design life, and the working environment of the buildings is harsh, especially for hazardous waste. For landfills, construction materials must not only resist the erosion of water and chloride ions in the surrounding soil, but also prevent chemical or radioactive substances in hazardous waste from entering the surrounding soil or water to cause pollution. Unpredictable underground stress conditions increase the uncertainty of cracks, and the leakage of internal pollutants caused by the expansion of cracks will cause immeasurable harm to the so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/04C04B18/14
CPCC04B28/04C04B18/0463C04B2103/0001C04B18/141Y02W30/91
Inventor 张坤仝小宁余耀辉
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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