Flexural and fracture behavior of high-performance concrete using notch specimen

  • Kha-Ky Lam Faculty of Civil Engineering, Ho Chi Minh City University of Technology and Education, 01 Vo Van Ngan street, Thu Duc city, Ho Chi Minh city, Vietnam
  • Duy-Liem Nguyen Faculty of Civil Engineering, Ho Chi Minh City University of Technology and Education, 01 Vo Van Ngan street, Thu Duc city, Ho Chi Minh city, Vietnam
  • Tuan Manh Le Faculty of Civil Engineering, Ho Chi Minh City University of Technology and Education, 01 Vo Van Ngan street, Thu Duc city, Ho Chi Minh city, Vietnam
  • Ngoc-Thanh Tran Institute of Civil Engineering, Ho Chi Minh City University of Transport, 02 Vo Oanh street, Binh Thanh district, Ho Chi Minh city, Vietnam
DOI: https://doi.org/10.31814/stce.huce2024-18(3)-08
Keywords: high-performance concrete, notched specimen, load-carrying capacity, notch-to-depth ratio, critical stress intensity factor

Abstract

This study investigated the mechanical properties of high-performance concrete using notched specimens. All
flexural specimens had an identical geometry of 40×40×160 mm3 with a span length of 120 mm. Four notchto-depth ratios were as follows: 0 (N0 series), 0.125 (N1 series), 0.250 (N2 series), and 0.375 (N3 series), which
were designed at the specimen bottom of midspan section. The investigation focused on the four parameters
of high-performance concrete, including load carrying, deflection capacity, flexural strength, and the critical
stress intensity factor. The results showed that the load-carrying and deflection capacities decrease with an
increase in the notch-to-depth ratios. Furthermore, the flexural strength was ranked as follows: N0 series > N3
series > N2 series > N1 series, whereas ranking of the regarding critical stress intensity factor was opposite:
N1 series > N2 series > N3 series.

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Published
25-09-2024
How to Cite
Lam, K.-K., Nguyen, D.-L., Le, T. M., & Tran, N.-T. (2024). Flexural and fracture behavior of high-performance concrete using notch specimen. Journal of Science and Technology in Civil Engineering (JSTCE) - HUCE, 18(3), 102–113. https://doi.org/10.31814/stce.huce2024-18(3)-08
Issue
Vol 18 No 3 (2024)
Section
Research Papers

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