Journal of Korean Society of Agricultural Engineers ISSN:1738-3692(Print) 2093-7709(Online) 한국농공학회논문집

This study was performed to evaluate strengths and non-destruction properties of super flow concrete using recycled coarse aggregate.At the curing age of 28 days, the compressive strength was 22.7~37.5 MPa, the splitting tensile strength was 2.65~3.73MPa, the flexural strength was 5.78~6.86MPa, the ultrasonic pulse velocity was 3,103~3,480m/s, the dynamic modulus of elasticity was 3.401×10⁴~4.521×10⁴MPa, respectively.The strengths, ultrasonic pulse velocity and dynamic modulus of elasticity of super flow concrete were decreased with increasing the content of recycled coarse aggregate.The super flow concretes using recycled coarse aggregate were improved by substitution in the range of less than the fly ash content 30% and recycled coarse aggregate content 75%.