Mechanical response of high strength fibre reinforced concrete under extreme loads

LUCCIONI, B.; ISLA, F.; FIENGO, F.; CODINA, R.; AMBROSINI, D.; VIVAS, J.C.; ZERBINO, R.; GIACCIO, G.; TORRIJOS, M. C.

Fibre Reinforced Concrete: Improvements and Innovations.

Springer

Año: 2021; p. 536 - 547

High Strength Fibre Reinforced Concrete (HSFRC) presents greatadvantages when compared with conventional concrete under static loads andthus, it constitutes a promising material to withstand extreme loads. An experimental and numerical research carried out with the objective of developingdesign criteria for HSFRC use in protective structures construction is presented.The mechanical behaviour of HSFRC elements under extreme loads is experimentally and numerically analysed. Numerical models represent useful tools forthe design of this type of HSFRC applications but they should be carefullycalibrated and validated with experimental results. HSFRC prisms and slabsincluding different types of hooked-end steel fibres are tested under static, blastand impact loads. Material models at the meso and the macro scale are developed, they are calibrated with characterization tests and validated with experimental results. Experimental results are analysed with the aid of numericalmodels showing the effect of fibre type and content under extreme load.Numerical models are able to reproduce the blast and impact tests results andgive additionally information about the local and structural response underimpulsive loads that could be valuable for the design of protective structures.