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Method for preparing active admixture for concrete and cement by building waste

A construction waste and active admixture technology, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the constraints of high efficiency, recycling and resource optimization utilization of construction waste, and the lack of construction waste treatment New technology and other issues to achieve the effect of resource optimization and recycling

Active Publication Date: 2012-04-11
QINGDAO JIANYIXIN MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of new technologies and processes for construction waste treatment, the efficient, circular and resource-optimized utilization of construction waste is restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 selects 60 kilograms of crushed sintered clay bricks and tiles that are broken, iron-removed, and dried from construction waste, and 5 kilograms of blast furnace water-quenched slag, 10 kilograms of fly ash, 5 kilograms of limestone, and quicklime are added respectively. 3 kg, 3 kg of gypsum, 3 kg of alkali slag, 1 kg of polyol amine admixture, just grind and stir evenly.

Embodiment 2

[0014] Embodiment 2 selects 65 kilograms of broken sintered clay bricks and tiles that are broken, iron-removed, and dried from construction waste, and 30 kilograms of blast furnace water-quenched slag, 15 kilograms of fly ash, 7 kilograms of limestone, and quicklime are added respectively. 4 kg, 4 kg of gypsum, 4 kg of alkali slag, 2 kg of polyol amine admixture, just grind and stir evenly.

Embodiment 3

[0015] Embodiment 3 selects 70 kilograms of broken sintered clay bricks and tiles that are broken, iron-removed, and dried from construction waste, and 50 kilograms of blast furnace water-quenched slag, 10 kilograms of fly ash, 10 kilograms of limestone, and quicklime are added respectively. 5 kg, 5 kg of gypsum, 5 kg of alkali slag, and 3 kg of polyol amine admixture, just grind and stir evenly.

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PUM

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Abstract

A method for preparing an active admixture for concrete and cement by building wastes is characterized in that the components comprises 60-70% of building wastes, 10-50% of blast furnace water quenching slag, 5-20% of fly ash, 5-10% of limestone, 3-5% of quicklime, 3-5% of gypsum, 3-5% of alkaline residues, and 1-3% of poly alkanolamine additives; the method comprises the following steps: sortingbuilding wastes to obtain broken sintered clay bricks and tiles to be used, performing crushing, iron removal, and drying, proportionally adding blast furnace water quenching slag, fly ash, limestone, quicklime, gypsum, alkaline residues, and poly alkanolamine additives, grinding and uniformly stirring. The invention solves the problems of resource optimization and cyclic utilization of building wastes, and is widely applicable to full, high-efficient, and reasonable utilization and processing of building wastes.

Description

technical field [0001] The invention relates to the field of resource recycling science and technology of recycling, processing and comprehensive utilization of construction waste, specifically a kind of classification treatment of demolition construction waste, and then professional deep processing to make concrete, mortar and cement for commercial use. The method of active admixture used. technical background [0002] At present, the level of recycling and utilization of construction waste in my country is relatively low, mainly after crushing, screening, grading, and cleaning, it is used as recycled aggregate to prepare low-grade recycled concrete, which is used for foundation reinforcement, road engineering cushion, indoor floor and floor cushion , or for the production of non-load-bearing concrete hollow blocks, concrete hollow partition panels, autoclaved fly ash bricks and other products. Due to the lack of new technologies and new processes for construction waste tre...

Claims

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Application Information

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IPC IPC(8): C04B18/30
CPCY02W30/91
Inventor 刘新卫董士文范遵东
Owner QINGDAO JIANYIXIN MATERIAL TECH
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