EFFECT OF CERAMIC WASTE, NEW AND OLD RECYCLED AGGREGATES ON THE PHYSICO-MECHANICAL PROPERTIES OF CONCRETE

Mohamed Bachar ； Rebih Zaitri

《技術學刊》 37卷3期 (2022/09) Pp. 165-175

摘要

Ceramic blocks and concrete are the main materials that generate construction and demolition waste. Its restoration has become a major environmental problem, and reusing it in the form of aggregates or powder intended for the manufacture of new concrete will allow us to preserve natural resources, but also reduce pollution from landfills. The research presented here consists of a comparative study between the physico-mechanical properties of a concrete containing 50% of new recycled aggregates from the laboratory and another containing old recycled aggregates from demolition waste with the same percentage. The powder obtained from the ceramic waste replaces the cement with three levels of mass percentages (10%, 20%, 30%). All the compositions are compared with a reference concrete without powder and without recycled aggregates. The results show that concretes containing 20% of ceramic powder and old recycled aggregates have a little less physico-mechanical performance than those of a reference concrete and slightly better than those of concrete with new recycled aggregate except the results on the static modulus of elasticity which showed the opposite.

關鍵字

recycled aggregates ； natural aggregates ； ceramic waste powder ； dry density mechanical strength

參考文獻

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