순환골재콘크리트와 이형철근 사이의 부착성능

Abstract

This research is main object to study bond performance between concrete and rebar by the replacing ratio of recycled aggregate and the quality of recycled aggregate etc. as main experiment Result is as following. 1) Slip was smal or similar than normal concrete to replacing ratio 50% of recycled aggregate, increased in concrete that replacing ratio 100% of recycled aggregate. 2) Bond strength of recycled coarse aggregate concrete was similar with normal concrete, but bond strength of recycled fine aggregate concrete decreased according as recycled aggregate replacing ratio increases. 3) The τb/ fck of recycled aggregate concrete decreased according as relative absorption increases, and decrease tilt of τb/ fck is obvious in more than relative absorption 3. 4) According as water-cement ratio is decrescent, the τb/ fck of recycled aggregate concrete decreased, and specially it was notable in recycled fine aggregate concrete.……………