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Identification of Liquefiable Coastal Plain Soils Using DMT, SPT, and CPT Profiles
This paper presents the results from flat-plate dilatometer tests (DMT), cone penetration tests (CPT), and standard penetration tests (SPT) performed in close proximity to each other at four research sites (Sampit, Gapway, Hollywood, and Four Hole Swamp) located in the South Carolina Coastal Plain (SCCP) where evidence of paleoliquefaction has been identified through the discovery of prehistoric sandblows. The soil deposits at these sites range in age from about 120,000 to 1,400,000 years. The DMT, SPT, and CPT were analyzed together with the results from geotechnical laboratory index tests to create a generalized stratigraphic profile for each site. The soil layer at each site most prone to liquefaction was identified using the generally accepted criteria of qc1 less than 160 and N160 less than 30 and the results of geotechnical laboratory index tests. For each potentially liquefiable layer, it was found that the corresponding dilatometer material index, KD, was less than 12 and the corresponding dilatometer modulus, ED, was less than 795 ksf (38 MPa).
Identification of Liquefiable Coastal Plain Soils Using DMT, SPT, and CPT Profiles
This paper presents the results from flat-plate dilatometer tests (DMT), cone penetration tests (CPT), and standard penetration tests (SPT) performed in close proximity to each other at four research sites (Sampit, Gapway, Hollywood, and Four Hole Swamp) located in the South Carolina Coastal Plain (SCCP) where evidence of paleoliquefaction has been identified through the discovery of prehistoric sandblows. The soil deposits at these sites range in age from about 120,000 to 1,400,000 years. The DMT, SPT, and CPT were analyzed together with the results from geotechnical laboratory index tests to create a generalized stratigraphic profile for each site. The soil layer at each site most prone to liquefaction was identified using the generally accepted criteria of qc1 less than 160 and N160 less than 30 and the results of geotechnical laboratory index tests. For each potentially liquefiable layer, it was found that the corresponding dilatometer material index, KD, was less than 12 and the corresponding dilatometer modulus, ED, was less than 795 ksf (38 MPa).
Identification of Liquefiable Coastal Plain Soils Using DMT, SPT, and CPT Profiles
Williamson, Joseph R. (author) / Gassman, Sarah L. (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 2112-2121
2014-02-24
Conference paper
Electronic Resource
English
Identification of Liquefiable Coastal Plain Soils Using DMT, SPT, and CPT Profiles
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