COMPACTION GROUTING METHOD

PURPOSE: A compaction grouting method is provided to be applied for the foundation reinforcement of structure in which vibration load generates. CONSTITUTION: A boring machine drills the ground(2). A hollow pile with a bit is gradually lifted. A grout(20) is injected through a hollow pile to charge the weak soil foundation. The hollow pile is removed, if the charge of the grout is completed to the plan depth of the weak soil foundation. A white pipe(50) is inserted to the fixed depth before the grout is cured. The pit excavation is performed to the plan depth. An upper surface is finished with a concrete layer(60) after cutting the white pipe.