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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.77 No.1
- 발행연도
- 2021.1
- 수록면
- 103 - 114 (12page)
이용수
초록· 키워드
오류제보하기
Ultra high strength concrete (UHSC) originally proposed by Richards and Cheyrezy (1995) composed of cement, silica fume, quartz sand, quartz powder, steel fibers, superplasticizer etc. Later, other ingredients such as fly ash, GGBS, metakaoline, copper slag, fine aggregate of different sizes have been added to original UHSC. In the present investigation, the combined effect of coarse aggregate (6mm – 10mm) and steel fibers (0.50%, 1.0% and 1.5%) has been studied on UHSC mixes to evaluate mechanical and fracture properties. Compressive strength, split tensile strength and modulus of elasticity were determined for the three UHSC mixes. Size dependent fracture energy was evaluated by using RILEM work of fracture and size independent fracture energy was evaluated by using (i) RILEM work of fracture with tail correction to load – deflection plot (ii) boundary effect method. The constitutive relationship between the residual stress carrying capacity (σ) and the corresponding crack opening (w) has been constructed in an inverse manner based on the concept of a non-linear hinge from the load-crack mouth opening plots of notched three-point bend beams. It was found that (i) the size independent fracture energy obtained by using above two approaches yielded similar value and (ii) tensile stress increases with the increase of % of fibers. These two fracture properties will be very much useful for the analysis of cracked concrete structural components.
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참고문헌 (80)
참고문헌 신청
Abdalla, H. M. / 2003 / Determination of size-independent specific fracture energy of concrete from three-point bend and wedge splitting tests / Mag. Concrete. Res. 55:133~141
Abdalla, H. M. / 2004 / A method for constructing the bilinear tension softening diagram of concrete corresponding to its true fracture energy / Mag. Concrete. Res 56:597~604
Mohammed A. Al-Osta / 2019 / Shear behaviour of RC beams retrofitted using UHPFRC panels epoxied to the sides / Computers and Concrete, An International Journal 24(1):37~49
Majid Anoushehei / 2017 / Experimental investigation on hysteretic behavior of rotational friction dampers with new friction materials / Steel and Composite Structures, An International Journal 24(2):239~248
Aydin, S. / 2010 / Effect of aggregate type on mechanical properties of reactive powder concrete / ACI Materials J 107:441~449
Abdalla, H. M. / 2004 / A method for constructing the bilinear tension softening diagram of concrete corresponding to its true fracture energy / Mag. Concrete. Res 56:597~604
Mohammed A. Al-Osta / 2019 / Shear behaviour of RC beams retrofitted using UHPFRC panels epoxied to the sides / Computers and Concrete, An International Journal 24(1):37~49
Majid Anoushehei / 2017 / Experimental investigation on hysteretic behavior of rotational friction dampers with new friction materials / Steel and Composite Structures, An International Journal 24(2):239~248
Aydin, S. / 2010 / Effect of aggregate type on mechanical properties of reactive powder concrete / ACI Materials J 107:441~449
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