Regenerative bone material by concrete and preparing method thereof
A technology of concrete regeneration and waste concrete, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of demolition and waste concrete, and achieve the improvement of processing purity, reduction of mud content, and improvement of mechanization degree of effect
Inactive Publication Date: 2005-01-05
TONGJI UNIV
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Problems solved by technology
[0002] Although concrete materials have a long service life, concrete structures and buildings will eventually have to be demolished due to various factors after a period of use, resulting in a large amount of waste concrete
Method used
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[0026] Cut or break the waste concrete blocks into the size of the feed port of the crusher; remove the steel bars and large impurities by manual sorting; use the jaw crusher to crush the waste concrete blocks, use the magnet separator to remove iron filings, and use the garbage to automatically The air selection process removes light impurities; dry mixes with a mixer to remove excess attached mortar; then sieves through a vibrating screen or centrifugal screen to obtain recycled aggregates of different particle sizes. Its particle size can be divided into 0-5mm, 5-20mm, 20-40mm, 60-80mm, 80-100mm and so on. Finally, wash, transfer, and store aggregates with a particle size of 5-40mm.
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Abstract
The invention is a concrete regenerative aggregate obtained by crushing discarded concrete and its preparing method, using the discarded concrete as raw material, and making special processes of crushing, dry-blending, screening and washing to obtain it. It has physical and mechanical properties approaching those of natural stones, a relatively ideal material for preparing regenerative concretes with low strength, medium strength, etc, able to be widely applied to road engineering, municipal engineering and houses and buildings engineering.
Description
technical field [0001] The invention belongs to the technical field of concrete raw material production, and in particular relates to a recycled aggregate capable of preparing recycled concrete processed from waste concrete as the main raw material and a preparation method thereof. Background technique [0002] Although concrete materials have a long service life, concrete structures and buildings will eventually have to be demolished due to various factors after a period of use, resulting in a large amount of waste concrete. On the other hand, with the development of social economy and the increase of concrete consumption, resource depletion and environmental damage caused by the mining of sand and gravel aggregates have become the focus of engineering and technical personnel. The sustainable development of concrete is in contradiction with the supply and demand of aggregates. increasingly prominent. Therefore, if the waste concrete can be recycled on site, crushed and gra...
Claims
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IPC IPC(8): C04B18/04C04B18/16C04B20/02
CPCY02W30/91
Inventor 肖建庄李佳彬
Owner TONGJI UNIV
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