Assessment of Pavement Structural Strength by the Falling Weight Deflectometer
The main objective of the research project was to derive the equation for calculating the pavement equivalent E-modulus on the basis of the Falling Weight Deflectometer (FWD) deflection measurement data to be used in the Estonian Pavement Management System (EPMS) for network and project level analys...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
RTU Press
2006-12-01
|
| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/3939 |
| _version_ | 1818204770098216960 |
|---|---|
| author | Andrus Aavik Priit Paabo Tiit Kaal |
| author_facet | Andrus Aavik Priit Paabo Tiit Kaal |
| author_sort | Andrus Aavik |
| collection | DOAJ |
| description | The main objective of the research project was to derive the equation for calculating the pavement equivalent E-modulus on the basis of the Falling Weight Deflectometer (FWD) deflection measurement data to be used in the Estonian Pavement Management System (EPMS) for network and project level analysis so, that the determined values are comparable with the Estonian flexible pavement design procedure 2001-52. In 1999, 32 and in 2001 additional 19 FWD test sites were chosen on actual pavement structures to perform FWD measurements annually, once or twice per month from early spring until late autumn. FWD measurement data were analysed mathematically and the results were compared with the Estonian flexible pavement design procedure. The research project results in the following:
• The quantitative methodology for evaluating the qualitative characteristics of the pavement is determined on the basis of the Cobb-Douglas equation, taking into account at a time practically an unlimited number of factors influencing the pavement structural condition.
• The relationship between the pavement equivalent elastic modulus calculated according to the Estonian flexible pavement design procedure 2001-52 and based on the FWD measured deflection is determined. The equation for calculating of the pavement equivalent E-modulus on the basis of the FWD deflection data to be used in the EPMS is derived.
The correction factors for the pavement equivalent E-modulus, taking into account the month of the FWD measurement performance, moisture conditions and road embankment height at the FWD test site, are mathematically based on statistical data determined for Estonian conditions. |
| first_indexed | 2024-12-12T03:46:31Z |
| format | Article |
| id | doaj.art-ad1f9c227bca4667b18a907394646131 |
| institution | Directory Open Access Journal |
| issn | 1822-427X 1822-4288 |
| language | English |
| last_indexed | 2024-12-12T03:46:31Z |
| publishDate | 2006-12-01 |
| publisher | RTU Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj.art-ad1f9c227bca4667b18a9073946461312022-12-22T00:39:32ZengRTU PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882006-12-01141931992228Assessment of Pavement Structural Strength by the Falling Weight DeflectometerAndrus Aavik0Priit Paabo1Tiit Kaal2Dept of Transport, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, EstoniaBaltifalt Ltd., Väo tee 30, Rae, 75303 Harju County, EstoniaTechnical Centre of Estonian Roads Ltd., Männiku tee 123/6, 11216 Tallinn, EstoniaThe main objective of the research project was to derive the equation for calculating the pavement equivalent E-modulus on the basis of the Falling Weight Deflectometer (FWD) deflection measurement data to be used in the Estonian Pavement Management System (EPMS) for network and project level analysis so, that the determined values are comparable with the Estonian flexible pavement design procedure 2001-52. In 1999, 32 and in 2001 additional 19 FWD test sites were chosen on actual pavement structures to perform FWD measurements annually, once or twice per month from early spring until late autumn. FWD measurement data were analysed mathematically and the results were compared with the Estonian flexible pavement design procedure. The research project results in the following: • The quantitative methodology for evaluating the qualitative characteristics of the pavement is determined on the basis of the Cobb-Douglas equation, taking into account at a time practically an unlimited number of factors influencing the pavement structural condition. • The relationship between the pavement equivalent elastic modulus calculated according to the Estonian flexible pavement design procedure 2001-52 and based on the FWD measured deflection is determined. The equation for calculating of the pavement equivalent E-modulus on the basis of the FWD deflection data to be used in the EPMS is derived. The correction factors for the pavement equivalent E-modulus, taking into account the month of the FWD measurement performance, moisture conditions and road embankment height at the FWD test site, are mathematically based on statistical data determined for Estonian conditions.https://bjrbe-journals.rtu.lv/article/view/3939flexible pavemente-modulusfalling weight deflectometer (fwd)cobb-douglas equation |
| spellingShingle | Andrus Aavik Priit Paabo Tiit Kaal Assessment of Pavement Structural Strength by the Falling Weight Deflectometer The Baltic Journal of Road and Bridge Engineering flexible pavement e-modulus falling weight deflectometer (fwd) cobb-douglas equation |
| title | Assessment of Pavement Structural Strength by the Falling Weight Deflectometer |
| title_full | Assessment of Pavement Structural Strength by the Falling Weight Deflectometer |
| title_fullStr | Assessment of Pavement Structural Strength by the Falling Weight Deflectometer |
| title_full_unstemmed | Assessment of Pavement Structural Strength by the Falling Weight Deflectometer |
| title_short | Assessment of Pavement Structural Strength by the Falling Weight Deflectometer |
| title_sort | assessment of pavement structural strength by the falling weight deflectometer |
| topic | flexible pavement e-modulus falling weight deflectometer (fwd) cobb-douglas equation |
| url | https://bjrbe-journals.rtu.lv/article/view/3939 |
| work_keys_str_mv | AT andrusaavik assessmentofpavementstructuralstrengthbythefallingweightdeflectometer AT priitpaabo assessmentofpavementstructuralstrengthbythefallingweightdeflectometer AT tiitkaal assessmentofpavementstructuralstrengthbythefallingweightdeflectometer |