Dynamic response of UHPFRCs in direct-shear tests

Cadoni, Ezio and Dotta, Matteo and Forni, Daniele and Riganti, Gianmario (2020) Dynamic response of UHPFRCs in direct-shear tests. Procedia Structural Integrity, 28. 933 - 942.

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Abstract

The comprehension of the phenomena caused by fast-transient-loading regimes on structures, such as impact or blast, plays a capital role in order to prevent catastrophic failures. In fact, very complex failure modes can occur at these regimes where compression, tensile and shear strengths are involved. The present study investigates the dynamic response of commercial Ultra High Performance Fibre Reinforced Concretes (UHPFRCs) in direct-shear. Four UHPFRCs with different percentages of fibre reinforcement (1%, 2%, 3% and 4%) were tested at the same high strain-rate level. These results were compared with those obtained on their matrix. They showed that increasing the percentage of fibres enhances the direct-shear strength. The experiments were carried out by means of a Modified Hopkinson Bar device installed in the DynaMat Laboratory.

Item Type:	Scientific journal article, Newspaper article or Magazine article
Additional Information:	1st Virtual European Conference on Fracture - VECF1
Uncontrolled Keywords:	Ultra High Performance Fibre Reinforced Concrete, direct-shear test, Modified Hopkinson Bar, high strain-rate
Subjects:	Engineering Engineering > Civil engineering Engineering > Civil engineering > Structural engineering
Department/unit:	Dipartimento ambiente costruzioni e design > Laboratorio SUPSI DYNAMAT
Depositing User:	Ezio Cadoni
Date Deposited:	02 Dec 2020 08:21
Last Modified:	24 Aug 2023 14:00
URI:	http://repository.supsi.ch/id/eprint/12153

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