Method for manufacturing regenerative solid bricks with MU7.5 by utilizing construction waste
A technology for regenerating solid bricks and construction waste, applied in the field of construction materials, can solve the problems of failure to fully utilize construction waste, etc., and achieve low production costs, better social and ecological benefits, and high social and ecological benefits Effect
Inactive Publication Date: 2014-03-05
GUANGXI UNIV
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Problems solved by technology
However, the main construction waste it uses is waste bricks, and besides waste bricks, most of the construction waste is waste concrete, so it has not been able to make full use of construction waste
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[0018] The method for preparing MU7.5 regenerated solid bricks from construction wastes in the present invention is to use waste bricks and waste concrete in construction wastes as fine aggregates after crushing and screening, and then add a certain amount of cement and an appropriate amount of water to prepare Recycled solid bricks with a strength class of 7.5Mpa. The composition of the raw materials and the mass parts of each raw material are: 15 parts of waste bricks, 30 parts of waste concrete, 5 parts of Portland cement and 4 parts of water.
[0019] The preparation steps of MU7.5 recycled solid bricks are:
[0020] The waste bricks are selected from the construction waste, put into a crusher for crushing, and the bricks with a particle size greater than 4.75 mm are screened out to obtain waste brick powder.
[0021] The waste concrete blocks are selected from the construction waste, put into a crusher for crushing, and the concrete blocks with a particle size greater th...
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Abstract
The invention discloses a method for manufacturing regenerative solid bricks with MU7.5 by utilizing construction waste in the field of construction materials. According to the method, the solid bricks comprise the following compositions: waste bricks and waste concrete in the construction waste, Portland cement and water, the regenerative solid bricks with the strength of MU7.5 can be manufactured by the construction waste through five procedures of sorting, crushing and screening into waste brick powder and waste concrete powder, airing, forming, maintaining and the like, wherein the particle sizes of the waste brick powder and waste concrete powder are less than 4.75mm. The method is a green synthesis process, and through tests, the average compressive strength is 8.8Mpa, the rupture strength is 2.2Mpa, the water absorption rate is 22%, the volume density is 1703kg / m<3>, the softening coefficient is 77.7%, and all the coefficients can achieve the national standard requirements.
Description
technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for preparing MU7.5 regenerated solid bricks from construction waste. Background technique [0002] With the vigorous development of my country's civil engineering industry, the process of urbanization and industrialization continues to advance, resulting in the generation of a large amount of construction waste, which has brought a heavy burden to the national energy. Building energy conservation has become a basic national policy of engineering construction. . At the same time, our country is also facing the serious problem that the demand for construction resources is growing rapidly and the building materials are increasingly scarce. Therefore, how to rationally dispose and utilize construction waste, reduce the waste of land resources, and realize the recycling of resources is an urgent problem to be solved in the field of construction materials. The u...
Claims
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IPC IPC(8): C04B28/04C04B18/16
CPCY02W30/91
Inventor 陈宗平陈宇良范杰李军涛许安邦余兴国陈德钊陈德莱
Owner GUANGXI UNIV