Wytrzymałość i odkształcalność graniczna przy rozciąganiu fibrobetonu z włóknem stalowym

Fibre concrete specimens reinforced with 2% vol. of plain and hooked steel fibres have been tested in direct tension. The fibres were of two-dimensional (2D) orientation or they were magnetically aligned (1D). Several independent systems were used to measure strain and elongation of the specimens. The failure of fibre reinforced concrete was always ductile and the specimens of 1D type shown distinct strain hardening behaviour. In the latter case it was also possible to observe the multiple cracking of the matrix.