서지주요정보
콘크리트 할렬 인장강도의 크기효과 : 초기균열 유무에 따라 = The size effect of the splitting tensile strength of concrete with and without initial notch
서명 / 저자 콘크리트 할렬 인장강도의 크기효과 : 초기균열 유무에 따라 = The size effect of the splitting tensile strength of concrete with and without initial notch / 임선택.
저자명 임선택 ; Lim, Seon-Taek
발행사항 [서울 : 한국과학기술원, 1989].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

4105786

소장위치/청구기호

학술문화관(문화관) 보존서고

MCIE 8920

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Even after more than 25 years of research in the field of fracture mechanics applied to concrete, the influences of specimen shape, specimen size and with and without initial notch on fracture process in concrete are still not fully understood and quantified. Therefore further more experiments and theoretical studies on this field should be progressed extensively. Hereupon, this experiment was performed to investigate the influences of specimen size and with and without initial notch on tensile strength, fracture toughness $K_{Ic}$, fracture energy $G_f$, and notch sensitivity of concrete. Tensile strength can be measured in three ways: direct tensile, splitting tensile, and flexural tensile tests. Because the cylindrical specimens are easier to handle and test, we selected cylindrical specimen and splitting tensile test in this work. The specimens were tested for diameters of 10, 20, 40, 80, and 160 cm with the same width of 20 cm. The ASTM standard test method (C 496), "splitting tensile strength of cylindrical concrete specimens", was followed as closely as possible. The results show that size effect appears conspicuously. As the specimen sizes increase, the splitting tensile strength of the specimen without initial crack and the net stress at failure of the specimen with initial crack decrease. As compressive strength is very important parameter in strength criterion, so fracture energy is very important parameter in energy criterion. Fracture energy was calculated by BKP (Bazant-Kim-Pfeiffer) method. The fracture toughness which is the critical value of stress intensity factor is more and more large as the specimen sizes increase.

서지기타정보

서지기타정보
청구기호 {MCIE 8920
형태사항 v, 49 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Seon-Taek Lim
지도교수의 한글표기 : 김진근
지도교수의 영문표기 : Jin-Keun Kim
학위논문 학위논문(석사) - 한국과학기술원 : 토목공학과,
서지주기 참고문헌 : p. 46-49
주제 Concrete.
균열. --과학기술용어시소러스
콘크리트 구조. --과학기술용어시소러스
인장 강도. --과학기술용어시소러스
Notch effect.
QR CODE qr code