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Indexed by:期刊论文

Date of Publication:2011-09-16

Journal:Advanced Materials Research

Included Journals:EI、CPCI-S、Scopus

Volume:308-310

Page Number:2555-2559

ISSN No.:9783037852132

Key Words:High fly-ash content concrete (HFCC); The freezing resistance; The cementious coefficient of fly-ash; The actual water to binder ratio; Critical natural freeze-thaw cycle times

Abstract:To the High fly-ash content concrete(abbreviated HFCC) whose fly-ash adding amount is 50%similar to 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 W-n=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.