01628167

Component

Soil strength and engineering properties are essential to the foundation design and necessary to adequately assess the load carrying capacity of soil during the design and construction process. Currently, no portable, manual, or automatic, easy-to use field device exist to measure the required soil parameters and to verify bearing capacity during construction. This paper presents the development of a new portable Mini Dynamic Penetration Test (MDPT) and examines the correlation between the penetration resistance (n-value) and the N- value from standard penetration test (SPT). The basic motivation is to estimate the strength and engineering properties of soils more conveniently and at a lower cost. The MDPT was tested in 12 counties from the coastal region (CR) and the piedmont region (PR) of the state of North Carolina (NC). Correlations were conducted without taking into account soil types and groundwater elevation. Analyses of the data show a clear linear relationship between the measurements from SPT N-value and MDPT n-value, Also, in-situ test results from MDPT indicate that the soil properties can be estimated from a portable dynamic penetration test data without the utilization of heavy costly drill rigs or trucks. The MDPT can be used to evaluate subgrade and soil layers strength and estimate soil properties using correlations with other in-situ testing methods.

This paper was sponsored by TRB committee AFP20 Standing Committee on Geotechnical Site Characterization.

01618707

17-05939

English

19p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Dynamic penetration test; Penetration resistance; Portable equipment; Soil penetration test; Test procedures

North Carolina

Geotechnology; Highways

Transportation Research Board Annual Meeting 2017 Paper #17-05939

TRIS, TRB, ATRI

Dec 8 2016 12:23PM