EFFECT OF HIGH TEMPERATURE ON COMPRESSIVE STRENGTH AND SPALLING PROPERTIES OF HIGH PERFORMANCE FIBRE REINFORCED CONCRETE

Author(s): Shi-Cong Kou and Chi-Sun Poon and Wei, Zheng, Tsz-Leung Lo and K.C. Ng
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 824-836
Total Pages: 961
Language : English

Abstract: This paper presents the results of an experimental study property of a plain and three synthetic fibre-reinforced high-strength concrete (HSC) mixtures having 120 MPa cube compressive strength at 28 days. The fibre-reinforced HSC mixtures were prepared by adding three different types of fibres of different lengths and melting points into the plain concrete. Fresh concrete was tested to determine the workability. The concrete specimens were cured in water until 3 and 28 days, and were then tested to determine the density, compressive strength, splitting tensile strength and ultrasonic pulse velocity (UPV). In the elevated temperature exposure test, the concrete specimens were heated at a rate of 5°C/min in an electric oven until 300, 400, 500 and 800°C respectively with the maximum temperature maintained for 4 hours. After natural cooling to room temperature, changes in concrete properties including occurrence of spalling, mass, compressive strength, tensile splitting strength and ultrasonic pulse velocity (UPV) were tested to determine the effects of the elevated temperatures on the HSC mixtures.

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