Abstract
Recently, the rationalization of evaluation of dam foundation grouting effects using geotomography has been studied enthusiasticaily. Test grouting was carried out at a site, which was composed of Pliocene sandstone. Resistivity tomography was used for the evaluation of grouting effects. Before the detailed analysis of the results of the resistivity tomography, laboratory measurement of the resistivity of cement-based grouts was made, varying their density and age. Based on the results of laboratory tests and the distribution of grouted veins observed in the grouting area, the possibility of the more rational evaluation of grouting with resistivity tomography was discussed.
