ИСТИНА

Cone penetration testing (CPT) has great potential for geotechnical engineering in permafrost. Cone resistance qc [MPa] and sleeve friction fs [kPa] are measured in basic tests, and pore pressure u2 [MPa] is measured in CPTu tests. Geotechnical engineering in permafrost requires additional data such as temperature t [°C], electrical conductivity σ [S/m], as well as pore pressure u2 [MPa]. Interpretation of the measured CPT data allows long-term soil strength and ad-freezing shear resistance to be estimated, key parameters for foundation engineering in permafrost. Keywords: CPT, permafrost, pile bearing capacity, long-term soil strength, electrical conductivity, temperature.