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BEHAVIOUR OF FIBRE‐REINFORCED CONCRETES WITH REFERENCE TO FRACTURE RESISTANCE
Author(s) -
Lai Sergio
Publication year - 1992
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1992.tb00063.x
Subject(s) - flexural strength , materials science , composite material , fracture toughness , ultimate tensile strength , deflection (physics) , brittleness , brittle fracture , volume fraction , fracture (geology) , beam (structure) , fracture mechanics , structural engineering , engineering , physics , optics
This paper examines the effect of beam size, fibre volume fraction and various fibres on the flexural behaviour of concretes, and their fracture resistance. The ratio of flexural strength to tensile strength is used as a measure of brittleness; a low value indicating a more brittle material. Two flexural toughness indices are used which provide a basis for analysing load–deflection curves. The relation between these structural indices and the material fracture resistance is assessed by adopting parameters which involve flexural and tensile strengths alone and fibre length to reflect fracture resistance.