Study on the Freezing Resistance of HFCC

Abstract:

To the High fly-ash content concrete(abbreviated HFCC) whose fly-ash adding amount is 50%~70%, the influence of actual water-binder ratio, fly-ash content, quality of fly-ash and compression strength on the freezing resistance of HFCC were studied; The critical freeze-thaw cycle times in this paper involved with mass loss rate Wn=5% and relative dynamic elastic modulus P=60%, the relationship between the critical freeze-thaw cycle times and the 28d compression strength of HFCC was analyzed; To HFCC without air-entraining agent, the experiment results showed that the freezing resistance decreased with the increase of actual water-binder ratio, the increase of fly-ash content and the reduce of fly-ash quality. The freeze-thaw damage of HFCC dues to the freeze-thaw degradation results from surface denudation.

• Periodical: Advanced Materials Research (Volumes 308-310)
• Pages: 2555-2559
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.308-310.2555
• Online since: August 2011
• Authors: Hong Mei Ai, Pu Guang Lu, Jun Ying Bai, Jing Jing Wei
• Keywords: Actual Water to Binder Ratio, Cementious Coefficient of Fly-Ash, Critical Natural Freeze-Thaw Cycle Times, Freezing Resistance, High Fly-Ash Content Concrete (HFCC)

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