| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grout exhibiting a pH in a neutral range (for example, 5.8 to 8.6) during transferring and filling, causing no material separation in water, having good plasticity, and capable of developing a large solidification strength after filling. <P>SOLUTION: The grout contains a sulfate salt (for example, aluminum sulfate) and a magnesium compound (for example, magnesium oxide and a partial hydrate of magnesium oxide). The grout can further contain a thickener (for example, galactomannan) and calcium carbonate. The grout can be prepared by mixing an A material containing a sulfate salt and water (the A material may contain a thickener) with a B material containing a magnesium compound and water (the B material may contain calcium carbonate) in use. <P>COPYRIGHT: (C)2012,JPO&INPIT |
