Computers and Concrete

  • 제1권4호
  • /
  • Pages.389-400
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  • 2004
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Analysis of the fracture surface morphology of concrete by the method of vertical sections

  • Konkol, Janusz (Department of Materials Engineering and Building Technology, Rzeszow University of Technology) ;
  • Prokopski, Grzegorz (Department of Materials Engineering and Building Technology, Rzeszow University of Technology)
  • 투고 : 2004.03.08
  • 심사 : 2004.09.15
  • 발행 : 2004.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

The examinations carried out have confirmed a relationship existing between the character of fracture surfaces and the composition and structure of (basalt and gravel) concretes. For both concretes investigated, a very good correlation was obtained between the profile line development factor, $R_L$, and the fracture surface development factor, $R_S$. With the increase in the $R_L$ parameter, the fracture surface development factor $R_S$ also increased. Agreement between the proposed relationship of $R_S=f(R_L)$ and the proposal given by Coster and Chermant (1983) was obtained. Stereological examinations carried out along with fractographic examinations made it possible to obtain a statistical model for the determination of $R_L$ (or $R_S$) based on the volume of air voids in concrete, $V_{air}$, the specific surface of air pores, $S_V_{air}$ the specific surface of coarse aggregate, $S_{Vagg.}$, and the volume of mortar, $V_m$. An effect of coarse aggregate type on the obtained values of the profile line development factor, $R_L$, as well as on the relationship $R_S=f(R_L)$ was observed. The increment in the fracture surface development factor $R_S$ with increasing $R_L$ parameter was larger in basalt concretes than in gravel concretes, which was a consequence of the level of complexity of fractures formed, resulting chiefly from the shape of coarse aggregate grains.

키워드

참고문헌

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피인용 문헌

  1. The necessary number of profile lines for the analysis of concrete fracture surfaces vol.25, pp.5, 2007, https://doi.org/10.12989/sem.2007.25.5.565
  2. The fractal analysis of the fracture surface of concretes made from different coarse aggregates vol.2, pp.3, 2005, https://doi.org/10.12989/cac.2005.2.3.239
  3. Fracture Toughness and Fracture Surface Morphology of Concretes Modified with Selected Additives of Pozzolanic Properties vol.9, pp.8, 2004, https://doi.org/10.3390/buildings9080174
  4. A Fractal Model of Cracking of Cement Matrix Composites vol.10, pp.3, 2004, https://doi.org/10.3390/buildings10030052