| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grout composition having excellent flowability, flow retentivity and underwater inseparability, and capable of forming a hardened body having excellent compressive strength in water and in air. <P>SOLUTION: The grout composition comprises Portland cement, a fine aggregate, a thickener and a superplasticizer, and the content of the plasticizer and the content of the thickener, based on 100 pts.mass of the Portland cement satisfy relationships represented by the expression (1): Y=20X+t and the expression (2): Y=2X+u, wherein X denotes the content (pts.mass) of the thickener; Y denotes the content (pts.mass) of the superplasticizer; t and u each denote a coefficient, in the range of -11.4≤t≤-6.2 and -0.6≤u≤0.4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
