Study on the Mechanism of Magnesium Sulfate to Cement and C-S-H Gel

Abstract:

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The microstructure of cement test block and the C-S-H gel attacked by magnesium sulfate is observed by means of scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS)and X-ray diffraction(XRD).It is found that the presence of Mg2+ makes C-S-H gel decalcify, dissolve and decompose, which thereby increasing the erosion of SO42- on the concrete. The decomposition of C-S-H and the generation of M-S-H result in the loss of concrete strength and the ultimate destruction of concrete.

Info:

Periodical:

Advanced Materials Research (Volumes 243-249)

Edited by:

Chaohe Chen, Yong Huang and Guangfan Li

Pages:

4687-4690

DOI:

10.4028/www.scientific.net/AMR.243-249.4687

Citation:

X. J. Li "Study on the Mechanism of Magnesium Sulfate to Cement and C-S-H Gel", Advanced Materials Research, Vols. 243-249, pp. 4687-4690, 2011

Online since:

May 2011

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$35.00

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