Fluidized sand and method of density control
AssigneeFudo Construction Co., Ltd.
InventorsYuki Imai, Hidenori Takada
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Abstract
A fluidized sand composition for use as a filling material for sinkholes and the like weakened ground cavities. The fluidized sand composition is produced by mixing graded sand, water, a fluidizer, a plasticizer, and a surface active agent. The fluidized sand composition is easily injected into the ground cavity of a sinkhole. After filling, the fluidized sand composition will return to the solid natural condition according to the effect of plasticizer previously added. The fluidized sand composition allows for compaction, soil stabilization, permits water migration through the material, and can be easily excavated.
Claims10
A fluidized composition for soil stability and water migration in a cavity comprising:
- adding a quantity of water to sand forming fluidized sand;
- admixing about 9.1 kg/m3 anionic polymer for each 1 m3 of fluidized sand;
- admixing about 0.7 kg/m3 cationic polymer plasticizer for each 1 m3 of fluidized sand;
- admixing about 0.7 kg/m3 of a surface active agent for each 1 m3 forming a fluidized composition;
- measuring the density of said fluidized composition;
- injecting said fluidized composition into a cavity;
- sampling said injected fluidized composition by use of a Standard Penetration test;
- measuring the density of said sampling;
- wherein said injected fluidized composition having a constancy of volume and constancy of density to provide soil stability and water migration.
Dependencies are inferred from the claim text.