Proportioning and preparation methods for recycled concrete pavement brick
A technology for recycled concrete and pavement bricks, which is applied in the direction of ratio control, non-electric variable control, control/regulation system, etc. It can solve the problems of low aggregate apparent density, poor aggregate gradation, and low aggregate crushing value. problem, to achieve the effect of good quality, saving time and cost, and simple steps
Active Publication Date: 2019-01-18
XIAN JIAOTONG LIVERPOOL UNIV
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Problems solved by technology
[0004] Compared with natural aggregates, recycled aggregates have the disadvantages of low aggregate crushing value, poor aggregate gradation, low aggregate apparent density and high water absorption.
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Embodiment 1
[0025] A method for proportioning recycled concrete pavement bricks. The ingredients in the recycled concrete pavement bricks include inorganic cementitious materials, concrete admixtures, aggregates and water; the proportion of the recycled concrete pavement bricks is: the inorganic cementitious materials include Cement; the ratio of the amount of aggregate to the amount of cement is 5.047:1; the ratio of the amount of water to cement is 1:2.63; the aggregate includes coarse aggregate and fine aggregate; the coarse aggregate includes natural Coarse aggregate, recycled concrete coarse aggregate and crushed tempered glass coarse aggregate; the fine aggregate includes natural fine aggregate and recycled concrete fine aggregate; the consumption of the recycled concrete coarse aggregate is 20% of the coarse aggregate consumption %-100%; the amount of recycled concrete fine aggregate is 10%-30% of the amount of fine aggregate; the amount of broken tempered glass coarse aggregate is ...
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The invention discloses proportioning and preparation methods for a recycled concrete pavement brick. The proportioning method is characterized in that the recycled concrete pavement brick is preparedfrom the following components including inorganic cementitious material, a concrete admixture, an aggregate and water; the aggregate includes a coarse aggregate and a fine aggregate; the coarse aggregate includes a natural coarse aggregate, a recycled concrete coarse aggregate and a crushed toughened glass coarse aggregate; the fine aggregate includes a natural fine aggregate and a recycled concrete fine aggregate; the inorganic cementitious material includes cement; and the concrete admixture includes granulated blast furnace slag powder. The preparation method comprises the following stepsof (1) preparation of raw materials; (2) mixing of the raw materials; (3) brickmaking formation; and (4) constant-temperature maintenance. The proportioning and preparation methods can reduce the production cost and are more environmentally friendly by utilizing a secondary waste as a raw material; and can accurately determine a ratio of various components and improve the production efficiency byapplying a formula. After determing a proportion by applying the formula, the various performances of the pavement brick prepared by the proportion are calculated, the time of testing performance is saved and the cost is reduced; the preparation method is simple in step, high in efficiency and good in quality.
Description
technical field [0001] The invention relates to a proportioning and preparation method of pavement bricks in which natural materials are replaced by recycled materials. Background technique [0002] With the rapid development of the economy and the continuous construction of various infrastructures, while meeting people's growing living needs, various resource and environmental problems have also arisen. Among them, how to deal with a large amount of construction waste generated in the process of infrastructure construction and housing construction has become an important issue. The traditional way of discarding and landfilling will cause serious environmental problems and waste of resources, which will affect the country's sustainable development strategy. Therefore, it has become one of the research directions of civil engineering to use waste building materials, process and reprocess them, and use these waste materials as recycled aggregates to pour concrete products. ...
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IPC IPC(8): C04B28/00G05D11/00
CPCC04B28/00C04B2111/00198C04B2201/50G05D11/00C04B18/167C04B14/02C04B14/22C04B18/141
Inventor 程志翔王欣弋
Owner XIAN JIAOTONG LIVERPOOL UNIV