Production manner null of foaming beads hybrid manipulation earth and foaming beads hybrid manipulation earth for underwater placing

摘要

PROBLEM TO BE SOLVED: To make the execution of processed earth possible even under water by keeping the density of a foam beads mixed process earth within the range of fixed value, and making an expandable resin particle whose mean grain diameter is less than fixed value contain earth and sand, solidifying material and water, and making the containing rate of water twice as much as the fixed value of liquid limit of the earth and sand. ;SOLUTION: The density of an expandable resin particle shall be 0.02-0.5g/cm³, and its mean grain diameter shall be less than 5mm. Its strength not to be crushed by water pressure is secured. In addition, separation due to floating shall be prevented. Next, volume ratio between the foam resin particle and the earth and sand shall be within the range of 0.5-4.0 to the earth and sand being 1. The containing rate of solidifying material is combined to 50-0.025 weight %. of the whole dry weight. In addition, water or sea water is added so that the water containing ratio of the earth and sand may be 1.5-3.0 times as much as liquid limit to give liquidity, and processed earth can be easily deposited under water. Thus effectiveness similar as that in the case where usual mixed light weight material is used on the ground can be obtained even under water.;COPYRIGHT: (C)1997,JPO