Relationship of Road Pavement Deformation Moduli, Determined by Different Methods

Authors

  • Giedrius Siaudinis Dept of Roads, Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223 Vilnius, Lithuania

Keywords:

road pavement deformations, structural layers of road pavement, pavement deformation modulus, compatibility criterion, relationship

Abstract

Deformations, caused by the axle loads of moving vehicles, are one of the main causes for pavement degradation. Measurement of elastic deflections is the best way to identify this effect. Currently, pavement deflections are most widely measured by the Falling Weight Deflectometer (FWD). Lithuanian standard LST 1360.5 "Soils for the motor roads" defines the measurement of deformations by static testing equipment at the top of each structural pavement layer. Based on the FWD-measured deflections at pavement surface, it is possible to calculate deformation moduli of structural pavement layers. In Lithuania deformation moduli are calculated by the ELMOD (Evaluation of Layer Moduli and Overlay Design) software. The results of experimental investigation of deformations of structural pavement layers by static and dynamic devices showed that the structural strength of road pavement, measured by the FWD, is close to the strength, measured by a static testing device. There is a linear relationship between E moduli, determined by static and dynamic methods. Investigation shows that the Falling Weight Deflectometer is suitable to determine the structural strength of investigated road pavements. However, more detailed investigations are necessary to identify the suitability of FWD to determine the structural strength of the other types of road pavement structures.

References

AASHTO Guide for Design of Pavement Structures. Washington AASHTO, 1 3. 31 p.

Puodziukas, V. Bituminous Pavement Evaluation and Strengthening Needs Assessment in Lithuania. Summary of Doctoral Dissertation. Technological Sciences, Civil Engineering (02T). Vilnius: Technika, 2000. 42 p.

Guidelines for Road Network Condition Monitoring: Part 3 - Pavement Strength. Austroads, 2005. 86 p.

STR2.06.03:2001 Regulation on Motor Roads (Techninių reikalavimų reglamentas. Automobilių keliai). Vilnius, 2002. 77 p. (in Lithuanian).

COST 333 Development of New Bituminous Pavement Design Method. 373 p.

LST 1360.5 Soils for Motor Roads. Testing Methods (Automobilių kelių gruntai. Bandymo metodai). Vilnius, 1 5. 14 p. (in Lithuanian).

Siaudinis, G.; Cygas, D. Investigations and Determination of Seasonal Effect on Road Pavement strength. In: 6th International Conference of Environmental Engineering. Vilnius: Technika, 2005, p. 783-786.

Analysis of Methods for the Calculation of Flexible Road Pavements, Evaluation, Calculation of Deformation Moduli of the Road Structure, Analysis of Investigation Results, Presentation of Recommendations and Conclusions. Investigation report. Transport and Road Research Institute (Automobilių kelių nestandziųjų dangų skaiciavimo metodų analize, ivertinimas, kelio konstrukcijos deformacijos modulių skaiciavimas, tyrimo rezultatų analize, rekomendacijų ir isvadų pateikimas. Tyrimų ataskaita. VI Transporto ir kelių tyrimo institutas), 2003. 50 p. (in Lithuanian).

Results of Measuring Deflections of Individual Layers of Flexible Road Pavement Structure and the Results of Laboratory Investigations of the Materials of Roadbed and Pavement Layers. Investigation Report. Transport and Road Research Institute (Nestandziųjų kelio dangų konstrukcijos atskirų sluoksnių ilinkių matavimo bei sankasos ir dangos sluoksnių medziagų laboratorinių tyrimų rezultatai. Tyrimų ataskaita. VI Transporto ir kelių tyrimo institutas), 2003. 31 p. (in Lithuanian).

Measurement of Deflections of Individual Layers of Flexible Road Pavement Structure by the Falling Weight Deflectometer DYNATEST FWD 8000 and a Static Device and Calculation of Deformation Moduli. Investigation Report. Transport and Road Research Institute (Nestandziųjų kelių dangų konst- rukcijos atskirų sluoksnių ilinkių matavimas su krintancio svorio deflektometru ,,DYNATEST FWD 8000” ir statiniu prietaisu bei deformacijos modulių skaiciavimas. Tyrimų ataskaita. VI Transporto ir kelių tyrimo institutas), 2003. 22 p. (in Lithuanian).

Calculation of Flexible Pavement Structures in Test Sections by Determining Thickness of Individual Layers and Their Strength Indicators. Investigation report. Transport and Road Research Institute (Nestandziųjų dangų konstrukcijų bandomuosiuose ruozuose skaiciavimas atskirų sluoksnių storiui bei jų stiprumo rodikliams nustatyti. Tyrimų ataskaita. VI Transporto ir kelių tyrimo institutas), 2003. 42 p. (in Lithuanian).

Downloads

Published

27.06.2006

How to Cite

Siaudinis, G. (2006). Relationship of Road Pavement Deformation Moduli, Determined by Different Methods. The Baltic Journal of Road and Bridge Engineering, 1(2), 77-81. https://bjrbe-journals.rtu.lv/bjrbe/article/view/1822-427X.2006.2.77%E2%80%9381