Multiaxial behaviour of fibre reinforced mortar for masonry strengthening subjected to high temperatures

Author(s): João Almeida, Eduardo Pereira, Hernán Xargay, Paula Folino, Joaquim Barros
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 478-485
Total Pages: 848
Language: English

Abstract: This paper analyses the effects of high temperature exposure up to 700°C on the residual multiaxial behaviour of a fibre reinforced mortar for overlay strengthening of masonry. Temperature has a detrimental effect in cementitious materials that can be simulated by advanced numerical models disposing of proper constitutive laws. Additionally, a multiaxialstress state can be found in localized areas of structural elements. The experimental residual behaviour from the mutual effect of temperature and multiaxial stress is evaluated and discussed. The analysis of the results show a clear loss of density and uniaxial strength after temperature exposure. The residual behaviour from specimens subjected to triaxial tests shows also a progressive change on the residual deviator stress vs confinement pressure response with the increase of temperature.

Online publication :2019
Publication type : full_text
Public price (Euros) : 00