국내전문학술

신경수, 김규용, 성길모, 우상균, & 임병훈. (2019). 알파형 반수석고를 활용한 콘크리트의 역학적 특성. 한국구조물진단유지관리공학회 논문집 (KSMI), 23(7), 72-79.
신경수, 김규용, 성길모, 우상균, & 임병훈. (2019). 알파형 반수석고를 활용한 콘크리트의 역학적 특성. 한국구조물진단유지관리공학회 논문집 (KSMI), 23(7), 72-79.
작성자 관리자
조회수 167 등록일 2019.12.01
주저자 신경수
교신저자 042-821-7731
공동저자 성길모, 우상균, 임병훈
학술지명 한국구조물진단유지관리공학회 논문집 23권 제7호.
Concrete is vulnerable to cracks due to volume changes caused by temperature changes, shrinkage during curing, external forces, or poor construction. In particular, concrete placed in electric power tunnel structures can generate cracks by a variety of factors. As a result, these tunnel structures require continuous maintenance. In this study, we investigated the mechanical properties of electric power tunnel concrete using alpha-calcium sulfate hemihydrate, which is an industrial byproduct that has excellent expansion performance. To compensate for the decrease in compressive strength when substituting alpha-calcium sulfate hemihydrate, based on previous research, we added 9% alpha-calcium sulfate hemihydrate and adjusted the amount of admixture while using the same amount of cement. We then evaluated the mechanical properties of the concrete. The results showed that the compressive strength of the concrete was higher than that of ordinary Portland cement (OPC), and the shrinkage of concrete was reduced by more than 30% compared to that of OPC. Therefore, adding 9% of alpha-calcium sulfate hemihydrate is expected to have a significant effect in reducing concrete cracks.