| 摘要 |
PURPOSE:To provide the title construction ensuring the improvement work to be simplified, transportation cost to be reduced and environmental pollution due to the byproducts from said work to be prevented, by admixing weak fill with an improver consisting mainly of a water-soluble polysaccharide or modified polysaccharide. CONSTITUTION:The objective improvement construction can be performed by admixing weak, fluid fill with an improver consisting mainly of (A) a polysaccharide such as starch, an aliginate, pectin, guar gum, carageenan, xanthan gum, dextran or pullulan or (B) a modified polysaccharide subjected to such a treatment as cation modification, carboxymethylation, hydroxyethylation, cyanoethylation, phosphoric esterification, acetic esterification, crosslinking, grafting by cationic polymer or alpha-modification in an amount of 0.1-100kg/m<3> (pref. 1-10kg/m<3>). |
