Applicability of Recycled Aggregate Containing Bricks for Producting Concrete
In order to investigate applicability of recycled aggregate containing bricks to product concrete,the recycled aggregate and re-cycled waste brick aggregate are used to replace different proportions of natural coarse aggregate to product different strength grades of concrete on the basis of the proposed mix ratio of different strength grades of concrete.The influencing law of recycled aggregate content and recycled waste brick aggregate content on compressive strength,flexural strength of recycled aggregate concrete were studied through systematic tests.The test results show that the compressive strength of recycled aggregate concrete would decrease with the re-cycled aggregate content or recycled waste brick aggregate content increased.The recycled aggregate containing bricks could be used to product concrete with strength grades C20 to C35.But when the proportion of recycled aggregates in the coarse aggregates is50%,the recycled waste brick aggregate content in concrete with strength grades C20 to C35 should not be greater than 20%,25%,40%and 60%,respectively.These achievement conducive to controlling and improving the quality of brick-containing recycled concrete.
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