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A study of spalling behaviour of PAN fibre‐reinforced concrete by thermal analysis
Author(s) -
Sarvaranta Leena,
Elomaa Matti,
Järvelä Eliisa
Publication year - 1993
Publication title -
fire and materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 58
eISSN - 1099-1018
pISSN - 0308-0501
DOI - 10.1002/fam.810170505
Subject(s) - spall , thermal analysis , materials science , forensic engineering , composite material , thermal , structural engineering , poison control , engineering , medical emergency , medicine , physics , meteorology
Abstract Comparisons are made between polypropylene (PP) fibres and polyacrylonitrile (PAN) fibres in order to relate the thermal properties of fibres with the respective fibre mortar behaviour under thermal exposure. Thermogravimetry (TG), differential scanning calorimetry (DSC) and thermochromatography (ThGC) are utilized. When a cementitious fibre mortar is being heated, several physical phenomena occur in the temperature range between 100°C and 200°C. There is a significant difference in the thermal behaviour between PP and PAN fibres. PP fibres melt at 160–170°C. The non‐melting behaviour of PAN fibre together with its rapid exothermic degradation reactions at around 300°C may add risk to the spalling of fibre mortar under rapid thermal exposure.