The Effect of Mineral Admixtures on Mechanical Properties of High Performance Concrete at very Low Temperature

Abstract:

The effect of very low temperature on high performance concrete (HPC) mechanical properties is studied by using a reasonable testing method. The results show that the compressive strengths of concrete are increasing with lower temperatures. Fly ash (FA), compared to ground granulated blast-furnace slag (GGBFS), is positive to the compressive strength increasing at low temperature. The splitting tensile strengths of concrete appear a maximum at-40°C~-80°C. The compound replacement by GGBFS and FA makes the splitting tensile strength present the extreme value at higher temperature. At very low temperature, the single or compound replacement by mineral admixtures can result in the difference of the relationship between compressive strength and splitting tensile strength, and the degradation of concrete subjected to cold-thermal shocks.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1509-1513
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1509
• Online since: July 2014
• Authors: Nan Zhang*, Juan Liao, Tao Zhang, Wen Zhan Ji, Bao Hua Wang, Dong Hua Zhang
• Keywords: Cold-Thermal Shock, Compressive Strength, Concrete, Splitting Tensile Strength, Very Low Temperature

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