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Comparison of in situ devices for the assessment of pavement subgrade stiffness

Cafiso, S. ; D'Agostino, C. LU orcid ; Capace, B. ; Motta, E. and Capilleri, P. (2016) 1st IMEKO TC4 International Workshop on Metrology for Geotechnics, MetroGeotechnics 2016 p.109-114
Abstract

The subgrade is the top surface of a roadbed upon which the pavement structure is constructed. The purpose is to provide a platform for construction of the pavement and to support the pavement without unwanted deflection that would reduce its performance. For those reasons subgrade bearing capacity have to be investigate during the construction process as a quality control, based on the design results. The dynamic in situ Falling Weight Deflectometer (FWD) tests are nowadays widely used and considered the most reliable and suitable approach to determine bearing capacity of road pavements and elastic moduli. In addition, the use of the Light Weight Deflectometer (LWD) takes the advantage of the dynamic application of load, and the... (More)

The subgrade is the top surface of a roadbed upon which the pavement structure is constructed. The purpose is to provide a platform for construction of the pavement and to support the pavement without unwanted deflection that would reduce its performance. For those reasons subgrade bearing capacity have to be investigate during the construction process as a quality control, based on the design results. The dynamic in situ Falling Weight Deflectometer (FWD) tests are nowadays widely used and considered the most reliable and suitable approach to determine bearing capacity of road pavements and elastic moduli. In addition, the use of the Light Weight Deflectometer (LWD) takes the advantage of the dynamic application of load, and the flexibility of the handling of the equipment on construction area and unbound layer. In the present paper, a wide literature review is presented on the topic of correlation between different subgrade bearing capacity in situ tests. In order to assess the transferability of LWD measures, these results were compared with FWD test and Dynamic Cone Penetrometer (DCP) test. Soil samples, taken from the site, have also been investigate in laboratory to relate geotechnical and in situ test results.

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author
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publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
1st IMEKO TC4 International Workshop on Metrology for Geotechnics, MetroGeotechnics 2016
pages
6 pages
publisher
IMEKO-International Measurement Federation Secretariat
conference name
1st IMEKO TC4 International Workshop on Metrology for Geotechnics, MetroGeotechnics 2016
conference location
Benevento, Italy
conference dates
2016-03-17 - 2016-03-18
external identifiers
  • scopus:84973867096
ISBN
9789299007501
language
English
LU publication?
no
id
f12e68ae-d3d8-4732-830e-b36272d2b458
date added to LUP
2019-06-19 08:38:38
date last changed
2022-04-10 18:35:22
@inproceedings{f12e68ae-d3d8-4732-830e-b36272d2b458,
  abstract     = {{<p>The subgrade is the top surface of a roadbed upon which the pavement structure is constructed. The purpose is to provide a platform for construction of the pavement and to support the pavement without unwanted deflection that would reduce its performance. For those reasons subgrade bearing capacity have to be investigate during the construction process as a quality control, based on the design results. The dynamic in situ Falling Weight Deflectometer (FWD) tests are nowadays widely used and considered the most reliable and suitable approach to determine bearing capacity of road pavements and elastic moduli. In addition, the use of the Light Weight Deflectometer (LWD) takes the advantage of the dynamic application of load, and the flexibility of the handling of the equipment on construction area and unbound layer. In the present paper, a wide literature review is presented on the topic of correlation between different subgrade bearing capacity in situ tests. In order to assess the transferability of LWD measures, these results were compared with FWD test and Dynamic Cone Penetrometer (DCP) test. Soil samples, taken from the site, have also been investigate in laboratory to relate geotechnical and in situ test results.</p>}},
  author       = {{Cafiso, S. and D'Agostino, C. and Capace, B. and Motta, E. and Capilleri, P.}},
  booktitle    = {{1st IMEKO TC4 International Workshop on Metrology for Geotechnics, MetroGeotechnics 2016}},
  isbn         = {{9789299007501}},
  language     = {{eng}},
  month        = {{01}},
  pages        = {{109--114}},
  publisher    = {{IMEKO-International Measurement Federation Secretariat}},
  title        = {{Comparison of in situ devices for the assessment of pavement subgrade stiffness}},
  year         = {{2016}},
}