Shrinkage cracking of steel fibre-reinforced and rubberized cement-based mortars

Author(s): T.-H. Nguyen, A. Toumi, A. Turatsinze
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 343- 344
Total Pages: 2
Language: English

Abstract: 
This paper presents an experimental investigation on the dimensional variations due to restrained shrinkage of Steel Fibre-Reinforced and Rubberised cement based Mortar (SFRRM) and the subsequent cracking. The composite cementitious materials contain rubber aggregates from grinded used tyres and/or steel fibre reinforcement, while a control material is a plain cementitious mortar. SFRRM was cast using rubber aggregates partly replacing 20% and 30% by volume of mineral aggregates and/or steel fibre contents of 20, 30 and 40 kg ⋅ m−3. The shrinkage dimensional changes of SFRRM were measured and compared to the one of the control mortar. Ring type specimens were used for restrained shrinkage cracking tests. It allowed the evaluation of the effect of rubber aggregates, of fibre reinforcement on early age cracking. Their synergetic effect was also analysed. The study demonstrates the effectiveness of rubber aggregates along with their positive synergetic effect when combined with steel fibre reinforcement to improve resistance to shrinkage cracking.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00