Abstract The present si tua tio n o f superfine cement in home and abroad i s int roduced here. The fundamental pro perties o f superfine cement and sodium silicate g rout ( called MCS g rout fo r sho rt ) a re researched. It i s applied successfully in satura ted flowing w aterbea ring sand lay er in Yang ti area of Gua ng zho u subw ay.
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Received: 05 October 1998
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