Study on Solidification Mechanism of Chloride Salt in Base Course Material of Cement-Fly-ash-Flushed-by-Seawater

Abstract:

Through analyzing the influence of different slat content on the microstructure of cement and fly-ash-flushed-by-seawater binder, the solidification mechanism of salt added cement and fly-ash-flushed-by-seawater binder is investigated. The Scanning Electron Microscope test, X-Ray diffraction and theoretical analysis method are adopted to study the performance and the microstructure of cement and fly-ash-flushed-by-seawater, and to analyze the solidification mechanism of chloride in the mixture. When content of the chloride ions is added to the cement and fly-ash-flushed-by-seawater binder, a new kind of crystal-Friedel can be generated in the age of 7d and 28d. According to the unconfined strength test on the specimens which contain 0.5% chloride ions, the strength is high in 7d, highest in 28d. The chloride ions of the fly-ash-flushed-by-seawater can be solidified in the cement and fly-ash-flushed-by-seawater binder, which can increase the strength of the binder.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 755-761
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.755
• Online since: May 2011
• Authors: Long Sheng Bao, Xiao Fang Zhang, Ling Yu, Guang Shan Zhu
• Keywords: Cement Gel, Chloride, Fly-Ash-Flushed-by-Seawater, Friedel Salt

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