Open AccessEFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER INCREASED STRAIN RATES
Author(s) -
Radoslav Sovják,
Jana Rašínová,
Petr Máca
Publication year - 2014
Publication title -
acta polytechnica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.207
H-Index - 15
eISSN - 1805-2363
pISSN - 1210-2709
DOI - 10.14311/ap.2014.54.0358
Subject(s) - materials science , fracture (geology) , composite material , strain (injury) , volume (thermodynamics) , strain rate , reinforced concrete , strain energy release rate , fracture mechanics , strain energy , volume fraction , structural engineering , finite element method , engineering , medicine , physics , quantum mechanics
The main objective of this paper is to contribute to the development of ultra-high performance fibre reinforced concrete (UHPFRC) with respect to its effective fracture energy. Effective fracture energy was investigated in this paper considering different fibre volume fractions and different strain rates. It was concluded that the effective fracture energy is dependent on the strain rate. In addition, it was found that higher fibre volume fractions tend to decrease the sensitivity of the UHPFRC to increased strain rates.