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  Ultrasonically Enhanced Material Properties of Liquid Grout

  Grouting is one of the most effective methods of improving the mechanical properties and sealing of soil and rocks in the construction environment. Various chemicals can be used as agents to lower viscosity and to improve the strength of grout; however, chemical agents are expensive. Ultrasonic excitation may promote a more homogenous mixture. This study investigated the use of ultrasonic excitation to increase the material properties of cement grout. In the laboratory experiments, the level of ultrasonic energy, ultrasonic irradiation time, and volume of sample were varied. The test specimens were prepared using Portland cement. Experiments were conducted with and without the application of ultrasonic energy. The results of the study illustrated a significant decrease in viscosity and increase in the compressive strength of grout because of ultrasonic excitation. The degree of enhancement varies with the supplied energy and can be correlated with the level of input energy.

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