건설재료시공학연구실
Building material & construction lab.

Tab

Choi, H. G., Kim, G. Y., & Noguchi, T. (2015). 수축보상형 콘크리트의 균열억제 효과에 관한 연구. Journal of the Korea Concrete Institute, 27(5), 569-577.
Choi, H. G., Kim, G. Y., & Noguchi, T. (2015). 수축보상형 콘크리트의 균열억제 효과에 관한 연구. Journal of the Korea Concrete Institute, 27(5), 569-577.
작성자	관리자
조회수	81	등록일	2015.10.01
주저자	최형길
교신저자	042-821-7731
공동저자	노구치 타카푸미
학술지명	한국콘크리트학회
ABSTRACT The aim of this study is to qualitatively evaluate the cracking control effects of expansive concrete used in reinforced concrete building. The result of experiments in laboratory shows that autogenous shrinkage and drying shrinkage are suppressed by using expansive additive. The tensile stress-strength ratio is lower in expansive concrete than normal concrete under fully restrained condition. Compression stress could be effectively generated in early age in the walls in buildings by the use of expansive additive, and tensile stress due to drying shrinkage at later age eventually decreased. Additionally, visual observation at long-term ages shows that the cracking area of expansive concrete was approximately 35% of normal concrete, which confirms that the use of expansive additive reduces concrete cracking in reinforced concrete buildings.