Effects of Compressive Strength and Carbonation of HCSA Amount on High Volume Fly Ash Concrete

Abstract:

In this article, the effects of compressive strength and carbonation depth of HCSA mixing amount on high volume fly ash concrete have been investigated. Besides, the effects of compressive strength and carbonation depth of the fly ash amount on HCSA expansive concrete have been also analyzed. The results show that proper HCSA mixing amount can improve the compressive strength and anti-carbonation resistance. On the condition of 55% mixing amount of fly ash and 6% HCSA, the compressive strength for 28 days enhanced 8MPa, the carbonation depth decreased by 0.7mm, at the age of 70, the strength increased by 12MPa and the depth reduced 1.7mm; when the mixing amount of HCSA reaches 10%, the internal structure of concrete would be destroyed; In the case of 6% HCSA amount, the compressive strength and anti-carbonation resistance decreases with the increase of fly ash mixing amount. While comparing to the concrete without HCSA, the compressive strength and anti-carbonation resistance increase obviously.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 333-337
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.333
• Online since: May 2011
• Authors: Juan Hong Liu, Fang Fang Hou, Shao Min Song, Bo Ya Jia
• Keywords: Carbonation, Compressive Strength, HCSA Expansive Agent, High Volume Fly Ash

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