|発明の名称||WATER POLLUTION PREVENTION METHOD|
PROBLEM TO BE SOLVED: To provide a water pollution prevention method which can prevent diffusion of pollution materials deposited on underwater ground and also remove pollutants from water area in question.
SOLUTION: The water pollution prevention method comprises the step of charging an underwater load material 1 into a polluted water area W to form a set film 10 on an underwater ground L in the polluted water area W. The underwater load material 1 is a blend comprising a limestone powder and a solidification material, which is formulated at a rate of 4.0 to 20.0 parts by mass of the solidification material based on 100 parts by mass of the limestone powder, and also comprising a water reducing agent formulated at a rate of 0.1 to 2.0 kg per m3 of the underwater load material, a viscosity improver formulated at a rate of 3 to 10 kg per m3 of the underwater load material, and water added so that the underwater load material has a wet density of 1.8Mg/m3 or more and a cylinder flow value of 250 mm or more. The set film 10 has an unconfined compressive strength of 0.01 to 0.5 N/mm2 at an age of the material of one day.
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