Field Compaction Evaluation with Dynamic Cone Penetration Test, Clegg Hammer, and Nuclear Gauge Test (05-1440)
Daehyeon Kim, Chosun University, South Korea
Nayyar Zia Siddiki, Indiana Department of Transportation
Kurt Sommer, Indiana Department of Transportation
William E. Jackson, Lafayette Instrument Company

ABSTRACT The Indiana Department of Transportation (INDOT) has been making a significant effort to effectively perform a quick and reliable compaction evaluation on the subgrade. This paper presents Dynamic Cone Penetration Test (DCPT) and Clegg Impact Test (CIT) results for various materials such as untreated soils, flowable fills, lime modified soils and a mixture of fly ash and bottom ash. This study was conducted to evaluate if there are any possible correlations between the DCPT and the CIT and to assess if these methods can be effectively incorporated for quick field compaction evaluation in future projects. Based on the collected data, both tests produce repeatable data and reasonable correlation between the blow count of the DCPT and the Clegg Impact Value. Both the DCPT and the CIT can be feasibly used in the evaluation of field compaction for various materials if an appropriate compaction control program is established.