Comparison of predicted cyclic resistance ratios from CPT, DMT, and shear wave velocity tests in Griffin, Indiana

This paper describes a site investigation performed at a sand and gravel quarry in Griffin, IN. Cone penetration tests (CPTu), vision CPTu (VisCPTu), seismic CPTu (SCPTu), and flat plate dilatometer tests (DMT) were performed. The high density and diversity of in situ tests provide an excellent opportunity to compare liquefaction susceptibility predictions using various tests. The availability of video image data offers a unique opportunity to augment the more conventional tests. The vision data provides a qualitative liquefaction hazard prediction, as very loose, liquefiable deposits show local liquefaction near the camera by way of observed soil movement during pauses in the cone's advance. Results show that current CPTu-based liquefaction assessments predict the highest liquefaction susceptibility in clean sand deposits. However, DMT-based liquefaction assessments predict the highest liquefaction susceptibility in gravelly sand.