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충남대학교

충남대학교 건설재료시공학연구실

Building material & construction lab.

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국내전문학술

윤민호, 최경철, 이태규, & 김규용. (2014). 60MPa 급 고강도 콘크리트의 굵은골재 종류와 고온상태에 따른 변형특성 평가. 콘크리트학회 논문집, 26(3), 247-254.
윤민호, 최경철, 이태규, & 김규용. (2014). 60MPa 급 고강도 콘크리트의 굵은골재 종류와 고온상태에 따른 변형특성 평가. 콘크리트학회 논문집, 26(3), 247-254.
작성자 관리자
조회수 254 등록일 2014.06.01
주저자 윤민호
교신저자 042-821-7731
공동저자 최경철, 이태규
학술지명 한국콘크리트학회
ABSTRACT
Strain properties of concrete member which acts as an important factor in the stability of the concrete structure in the event of fire, significantly affected the characteristics of the coarse aggregate, which accounts for most of the volume. For this reason, there are many studies on concrete using artificial lightweight aggregate which has smaller thermal expansion deformation than granite coarse aggregate. But the research is mostly limited on concrete using clay-based lightweight aggregate. Therefore, in thisstudy, the high temperature compressive strength and elastic modulus, thermal strain and total strain, high temperature creep strain of concrete was evaluated. As a result, remaining rate of high-temperature strength of concrete using lightweight aggregate is higher than concrete with general aggregate and it is determined to be advantageous in terms of structural safety and ensuring high-temperature strength from the result of the total strain by loading and strain of thermal expansion. In addition, in the case of high-temperature creep, concrete shrinkage is increased by rising loading and temperature regardless of the type of aggregate, and concrete using lightweight aggregate shows bigger shrinkage than concrete with a granite-based aggregate. From this result, it is determined to require additional consideration on a high temperature creep strain in case of maintaining high temperature like as duration of a fire although concrete using light weight aggregate is an advantage in reducing the thermal expansion strain of the fire.