Acta Polytechnica (Oct 2014)

EFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER INCREASED STRAIN RATES

  • Radoslav Sovják,
  • Jana Rašínová,
  • Petr Máca

DOI
https://doi.org/10.14311/AP.2014.54.0358
Journal volume & issue
Vol. 54, no. 5
pp. 358 – 362

Abstract

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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.