Influence of chlorides on the fracture toughness and fracture resistance\nunder the mixed mode I/II of high-performance concrete

0534678 - ÚFM 2021 RIV NL eng J - Článek v odborném periodiku
Miarka, Petr - Seitl, Stanislav - Horňáková, M. - Lehner, P. - Konečný, P. - Sucharda, O. - Bílek, V.
Influence of chlorides on the fracture toughness and fracture resistance
under the mixed mode I/II of high-performance concrete.
Theoretical and Applied Fracture Mechanics. Roč. 110, DEC (2020), č. článku 102812. ISSN 0167-8442. E-ISSN 1872-7638
Institucionální podpora: RVO:68081723
Klíčová slova: Brazilian disc * HPC * Mixed mode I/II * Fracture toughness * Chloride ingress * Diffusion
Obor OECD: Civil engineering
Impakt faktor: 4.017, rok: 2020
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0167844220303888?via%3Dihub

This experimental study shows the conjunction of fracture mechanics with the ability of high-performance
concrete (HPC) to resist an aggressive chloride environment. Moreover, the influence of a chloridecontaminated environment on the fracture toughness and fracture resistance under the mixed mode I/II is
presented. The experimental study was performed considering different aggressivity levels of the environment,
water, and fully saturated sodium chloride solution (NaCl-). The experimental tests were performed on a Brazilian disc specimens to test the indirect tensile strength ft and on a Brazilian disc with a central notch to evaluate
the fracture toughness KIC and the fracture resistance under the mixed mode I/II. The mixed mode I/II fracture
resistance was evaluated by the generalised maximum tangential stress (GMTS) criterion. The level of chloride
contamination present and its boundary in the concrete was estimated by the colorimetric method using silver
nitrate (AgNO3).

Trvalý link: http://hdl.handle.net/11104/0312853