The cement manufacturing process causes environmental problems such as carbon dioxide emissions. Bentonite-cement-water glass grouting (BCG) is a grout with low environmental impact, designed to reduce the use of cement. The significance of this study is to explore the fundamental properties of BCGs with the bentonite contents of up to 50%, and the antiwash-out and permeability characteristics of BCG in comparison with cement-water glass grout (CG). The effects of water-to-solid ratios (W/S), bentonite content, water glass content and the volume ratio of bentonite-cement slurry to water glass slurry (Va: Vb) on the fundamental properties of BCGs were tested in the laboratory. The results show that the BCGs have excellent characteristics of high viscosity, low bleeding, short and controllable setting time, and high early strength. The BCGs have been applied to the pre-grouting of the water-rich sandy pebble stratum in the Wangfujing North Station section of Beijing Metro Line 8 and achieved better water sealing and reinforcement effects than CG.


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    Title :

    Basic Properties and Engineering Application of Bentonite-Cement-Water Glass Grouting


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Zhou, Yao (author) / Wang, Gui He (author) / Yuan, Yu Fei (author)

    Published in:

    Publication date :

    2020-09-01


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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