Assessment of rock strength by texas cone penetrometer and uniaxial compression tests

William D. Lawson, Chad M. Mikulec, Mark P. McClelland, Emmett F. Irby, Priyantha W. Jayawickrama, Lea Levi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This study compares strength of the rock mass as evaluated by the Texas Cone Penetration (TCP) field test and the uniaxial compressive strength (UCS) laboratory test, both of which are commonly used as a basis for drilled shaft foundation design in Texas. Results from 965 sets of simultaneous data on Texas rock show that TCPUCS correlations exist for some rock materials, and these correlations typically improve as the rock type is better differentiated. In most - but not all - cases, when intact core strength is adjusted to account for fractures, joints, and discontinuities in the rock mass, the TCP-UCS correlation improves. Overall, the TCP-UCSrelationship is very weak to weak, a finding consistent with previous research. Copyright ASCE 2009.

Original languageEnglish
Title of host publicationContemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - Proceedings of Selected Sessions of the 2009 International Foundation Congress and Equipment Expo
Pages79-86
Number of pages8
Edition186
DOIs
StatePublished - 2009
EventContemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - 2009 International Foundation Congress and Equipment Expo - Orlando, FL, United States
Duration: Mar 15 2009Mar 19 2009

Publication series

NameGeotechnical Special Publication
Number186
ISSN (Print)0895-0563

Conference

ConferenceContemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - 2009 International Foundation Congress and Equipment Expo
CountryUnited States
CityOrlando, FL
Period03/15/0903/19/09

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    Lawson, W. D., Mikulec, C. M., McClelland, M. P., Irby, E. F., Jayawickrama, P. W., & Levi, L. (2009). Assessment of rock strength by texas cone penetrometer and uniaxial compression tests. In Contemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - Proceedings of Selected Sessions of the 2009 International Foundation Congress and Equipment Expo (186 ed., pp. 79-86). (Geotechnical Special Publication; No. 186). https://doi.org/10.1061/41022(336)11