Correlation of dynamic cone penetrometer index to proof roller test to assess subgrade soils stabilization criterion
| Autor: | Mohammed A. Gabr, S. Hamed Mousavi, Roy H. Borden |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Environmental Engineering Subgrade soils business.industry 0211 other engineering and technologies Soil Science 02 engineering and technology Subgrade Structural engineering Deformation (meteorology) 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Penetrometer Finite element method law.invention Cone (topology) Chart law Undercut Geotechnical engineering business 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | International Journal of Geotechnical Engineering. 12:284-292 |
| ISSN: | 1939-7879 1938-6362 |
| DOI: | 10.1080/19386362.2016.1272751 |
| Popis: | The proof roller test has been traditionally carried out as a technique for subgrade quality assessment in road construction and the induced pumping and permanent deformation are used as the basis for subgrade’s pass/fail criteria. The objective of the study presented herein is to assess the feasibility of using the dynamic cone penetrometer index, DCPI, to discern the need for undercut and the quality of subgrade. A series of 3D FEM analysis was performed to develop a subgrade stabilization recommendation chart, based on the predicted properties from DCPI and deformation response under cyclic proof roll loading. The ‘not passing’ criterion (will be referred to herein as ‘failure’ criterion) was determined as a 25 mm permanent deformation under proof roll test. It was determined that the failure deformation occurs at DCPI value of 38 mm/blow for single layer subgrade soil with the Mr/E50 of 6, ratio of resilient modulus to the secant modulus at 50% shear failure. These results are consistent with NCDOT 38... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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