Hydrated Portland Cement and Lightweight Concrete at Elevated Temperatures

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Title: Hydrated Portland Cement and Lightweight Concrete at Elevated Temperatures

Author(s): T. Z. Harmathy and J. E. Berndt

Publication: Journal Proceedings

Volume: 63

Issue: 1

Appears on pages(s): 93-112

Keywords: cement;concrete;compressve strength;deformation;hydrated portland cement; high temperature;lightweight concrete;modulus of elasticity;research;stress-strain curve;temperature.

Date: 1/1/1966

Abstract:
The stress-strain relationship in compression of hydrated portland cement (with a water-cement-ratio of 0.33) and a lightweight concrete was studied at elevated temperatures. The properties of both materials seemed to be virtually unaffected by temperature UD to about 400 F. Above this, the modulus of elasticity and ultimate strength decreased with increasing temperature. These changes were more definite for hydrated portland cement.