Damage mechanisms analysis of a multi-scale fibre reinforced cement-based composite subjected to impact loading conditions
Title: Damage mechanisms analysis of a multi-scale fibre reinforced cement-based composite subjected to impact loading conditions
Author(s): P. Rossi
Paper category : conference
Book title: 2nd International RILEM Conference on Strain Hardening Cementitious Composites (SHCC2-Rio)
Editor(s): R.D. Toledo Filho, F.A. Silva, E.A.B. Koenders and E.M.R. Fairbairn
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 37 - 44
Total Pages: 8
Nb references: 7
Abstract: A multi-scale fibre reinforced cement-based composite (MSFRCC) has been developed and patented in the past by IFSTTAR (previously LCPC). It is principally characterized by a high percentage of fibres (equal to 11% per volume) and an ultra-high tensile strength matrix (around 15MPa).
Three fibre dimensions are used in this composite.
In this paper, a qualitative analysis of the damage mechanisms of this material under impact loading is proposed.
The mains conclusions are:
- Apparent fibre-matrix adherence, which increases with the loading rate, leads to an increase in the material modulus of rupture, an increase much greater than for all existing cement-based materials. That is due to the high percentage of fibres used.
- A mechanical homogenization of the composite with the loading rate is observed. It is the result of cracks delocalization during crack process. This delocalization results from viscous effects generated within the matrix and around the fibre-matrix interfaces.
Online publication: 2012-01-25
Publication type : full_text
Public price (Euros): 0.00