Microstructural response of polypropylene fibres at high temperature to protect concrete from spalling

Author(s): M.C. Alonso, V. Flor-Laguna, M. Sanchez
Paper category: Workshop
Book title: Concrete Spalling due to Fire Exposure – Proceedings of the 3rd International Workshop, Paris 2013
Editor(s): P. Pimienta, F. Meftah
Print ISBN: 978-2-7598-1074-1
Publisher: Edp sciences
Pages: 102 - 109
Total Pages: 8
Language: English

The microstructural analysis of the interfacial transition zone (ITZ) and the interaction of polypropylene fibres (PPF) with mortar in the temperature region 170 to 300°C have been considered. The results confirm a mixed mechanism: The presence of the PPF alters the ITZ and favours an initial cracking formation. After melting, PPF diffuses in the surrounding cement paste closing micropores while, simultaneously, macro pores are increased as consequence of the free space leaved and the growing of microcracks.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00