Experimental Investigation of Acoustically Enhanced Dewaterability of Unconsolidated Soils

The acceleration of water content reduction by vibrational energy was investigated with a series of laboratory tests. Vibration was generated with a poly(vinylidene fluoride) (PVDF) film as a flexible transducer at various frequencies. Test conditions included the power and duration of sonic energy, and the soil type. Test results showed a significant increase in dewaterability when ultrasound was applied. The time required for the outflow of the same amount of water was shorter for the sonicated conditions. The degree of enhancement varied with the test conditions. Using the test results, we discuss the potential development of a new method that can reduce the dewatering period.