Research on the Variation of pH Value of the Ordinary Concrete and Fly Ash Concrete in the Carbonation Process

Abstract:

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The accelerated carbonation test was carried out for the ordinary concrete and fly ash concrete. Influences of water-cement ratio, carbonation age and fly ash content on pH value were researched. The results show that carbonation depth, including incomplete carbonized zone, can be effectively reduced by reducing water-cement ratio. So lower water-cement ratio means high performance of resistance of carbonate. The use of fly ash can optimize concrete pore morphology, it’s beneficial for anti-carbonation. However, It disadvantageous to anti-carbonation because of less carbonation material. By taking appropriate mixture of fly ash we can not only enhance the anti-carbonation ability of concrete, but also reduce the use of cement to get well economic benefits.

Info:

Periodical:

Advanced Materials Research (Volumes 374-377)

Edited by:

Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du

Pages:

1934-1937

DOI:

10.4028/www.scientific.net/AMR.374-377.1934

Citation:

G. Z. Qi et al., "Research on the Variation of pH Value of the Ordinary Concrete and Fly Ash Concrete in the Carbonation Process", Advanced Materials Research, Vols. 374-377, pp. 1934-1937, 2012

Online since:

October 2011

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Price:

$35.00

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