USING C30 CLASS WASTE CONCRETE AS RECYCLING AGGREGATE IN CONCRETE PRODUCTION

Recycling and re–use of waste materials have become very important especially in last two decades. Particularly using waste concrete as replacement of aggregate in concrete production has been continuing research interest in this field. In this study, known class and age of waste concrete is used as coarse and fine aggregates as production of concrete. There are two types of aggregates are used in concrete production as 0-4 and 4-22.4 sizes. These aggregates groups are replaced with normal aggregates as 0, 10, 20, 30, 40 and 50% ratios in concrete. Compressive strength of concrete specimens is determined as 28 and 90 days coring regime as well as elastic modulus of 28 days samples. According to results, waste concrete production as recycling aggregates.