Experimental Study on Activity of Fly Ash Replacing Cement in Concrete

Abstract:

The test and contrast mortars were made by changing water-binder (water-cement) ratio from 0.4 to 0.6, fly ash replacing rate from 10% to 30% and over-mass factor of fly ash from 1.3 to 1.7 with different methods of equal-replacing and over-mass replacing cement by fly ash. The variation of compressive and flexural strengths of mortar with water-binder ratio and admixing amount of fly ash are analyzed based on the test strengths. The formulas for calculating active factor of fly ash are proposed, and the regularity of active factor with the change of water-binder ratio and admixing amount of fly ash are given out.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 46-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.46
• Online since: October 2013
• Authors: Chang Yong Li, Long Jiang, Yang Liu, Zhi Ming Xu
• Keywords: Activity Factor, Cement, Compressive Strength, Flexural Strength, Fly Ash (FA), Water to Binder Ratio

References

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