An experimental study on the bond splitting strength of reinforced concrete beams with a mixture of low quality recycled aggregate and normal aggregate

Abstract

The Architectural Institute of Japan (AIJ) published a Recommendation for Mix Design, Production and Construction Practice of Concrete with Recycled Concrete Aggregate. Based on the Recommendation, recycled aggregate concrete using a mixture of low quality recycled aggregate was applied to reinforced concrete beams. As a result, a series of beam specimens using a mixture of low quality recycled fine aggregate and normal fine aggregate that included recycled coarse aggregate at a low substitution rate showed a tendency of having less drying shrinkage cracks. No significant differences of the bond splitting strength existed between normal concrete and that recycled aggregate concrete.