Fracture Analysis of Cube- and Cylinder-shaped WST Specimens Made of Cementitious Composites with Various Characteristic Length

0484561 - ÚFM 2018 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Řoutil, L. - Veselý, V. - Seitl, Stanislav
Fracture Analysis of Cube- and Cylinder-shaped WST Specimens Made of Cementitious Composites with Various Characteristic Length.
Key Engineering Materials. In: ADVANCES IN FRACTURE AND DAMAGE MECHANICS X. Zurich: Trans Tech Publications, 2012 - (Tonkovic, Z.; Aliabadi, M.), s. 533-536. Key Engineering Materials, 488-489. ISBN 978-3-0378-5218-7. ISSN 1013-9826.
[International Conference on Fracture and Damage Mechanics - FDM 2011 /10./. Dubrovník (HR), 19.09.2011-21.09.2011]
Grant CEP: GA AV ČR KJB200410901
Institucionální podpora: RVO:68081723
Klíčová slova: wedge-splitting test * cementitious composites * quasi-brittle fracture * brittleness * characteristic length * notch length
Obor OECD: Audio engineering, reliability analysis

The paper is focused on finding reasonable proportions for both cube-shaped and cylinder-shaped silicate-based composite specimens subjected to wedge-splitting tests. The analysis is conducted using finite element method code with an implemented cohesive crack model. The aspect of the material's brittleness, related to the heterogeneity of the material and described by what is termed as the characteristic length of quasi-brittle material, is accented. The results yield some recommendations for the determination of parameters of nonlinear fracture models for cementitious composites by means of wedge splitting tests of laboratory specimens of the two standard shapes.
Trvalý link: http://hdl.handle.net/11104/0279732