An Experimental Study on the Effect of Capping Type of Cylindrical Concrete Specimen on Compressive Strength

원주형 콘크리트 공시체의 캡핑종류별 압축강도 영향

There are a variety of factors affecting measured compressive strength of hardened concrete. One of them is the end surface condition of concrete specimen. So, many capping methods have been developed for the specimen to meet the end condition requirement of ASTM C 39. A series of experimental strength comparison study was carried out using several representative capping methods, including pad capping method which is one of unbonded elastomeric capping system and was newly adopted in the ASTM standard. A comparison was also focused on their economy, convenience, harmfulness, etc.