Abstract
In situ soil investigations were carried out at Tsuruga and Tomakomai sites using CPT, DMT, SFT and seismic cone penetration tests. Tsuruga site consists of reclaimed land filled with finely crushed rock aggregates, while Tomakomai site comprises the secondary sedimentary deposit of volcanic ash. Both the sites are characterized by granular materials having mean particle size considerably larger than 2mm. Various soil parameters obtained from these in situ tests have been correlated with each other, and the correlations compared with the already established ones for the sandy grounds. It has been found that DMT cannot be applied directly to grounds having large size soil particles.