Građevinar, Vol. 73 No. 04., 2021.
Preliminary communication
https://doi.org/10.14256/JCE.2931.2020
Rebar properties in sand-substitute mortars after exposure to high temperatures
Jeyaprabha Balasubramanian
Elangovan Gopal
Dhivya Kamaraj
Sathish Kumar Ponnaiah
Prakash Periakaruppan
Abstract
This study investigates the effects of fire, cooling methods, and cover thickness, on the behaviour (strength and ductility) of 12-mm diameter rebars embedded in mortars with river sand (RS) substitutes such as granite powder and manufactured sand, with 30 and 50 mm cover thickness. Beyond 500°C, thermal stress induced random spalling of mortar cover, and tension test results showed strength decrement and ductility increment of rebars for air cooling, while the vice versa was observed for water quenching.
Keywords
rebar properties; fire; sand substitutes; cover thickness; air cooling; water quenching
Hrčak ID:
257507
URI
Publication date:
12.5.2021.
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