| 摘要 |
PURPOSE:To eliminate the fluidity of hydrous surplus excavation soil by adding a specific amount of anionic acrylic flocculant to said soil having a slump value of not less than 5cm and thereafter further adding a specific amount of quick lime and cement thereto for kneading. CONSTITUTION:1m<3> of the hydrous surplus soil resulting from excavation at tunneling site and having a slump value of not less than 5cm and an anionic acrylic flocculant dispersing liquid containing 0.1-5kg of pure polymer are made up and kneaded together. 1-100kg of quick lime, slaked lime and/or cement are additionally added to the aforesaid kneaded mass so as to be kneaded therewith. The fine particles having a diameter of not more than 100mum of an acrylic water-soluble polymer having a molecular weight of not less than one million and an anionization efficiency of 3-100mol% are suitable for use as the anionic acryl flocculant. Moreover, the quick lime and cement have a dehydrating action, exerting a synergetic effect. |
