Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)

Tarekegn Kumela

doi:doi:10.11648/j.ajce.20180605.11

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Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)

Tarekegn Kumela

Published in American Journal of Civil Engineering (Volume 6, Issue 5)

Received: 22 September 2018 Accepted: 24 October 2018 Published: 15 November 2018

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Abstract

Road building in Ethiopia is increasingly in demand to meet medium and long terms development programs. Roads are constructed radiating from the capital city of the country in all direction. The objective of this research study is to evaluate the flexible pavement deflections with respect to pavement depth using Software along Jimma to Seka road segment and compare the laboratory results with the Ethiopian Road Authority (ERA) standards. Ever Stress Software (ESS) is a numerical analysis technique to obtain the deflection of pavement layers. The methodology of this research was finding the sensitivity of the road parameters (dimension, layers thickness, elastic modulus, Poisson’s ratio, loads and pressures) in reducing the major causes of failure in asphalt pavement fatigue cracking and rutting due to vertical surface deflections, the critical tensile strains at the bottom of the asphalt layer and the critical compressive strains on the top of subgrade. The analytical method used was the elastic modulus and Poisson’s ratio of the pavement materials as design parameters after CBR results of each layers was obtained. The expected outputs have shown that the displacement or deflection (u_z) was as high as 0.38mm in the asphalt surface and gradually decreased as the pavement thickness increased. Large values of deflections indicates an over stressed condition which results in the pavement surface to crack and distortion as a results of fatigue or accumulated plastic deformation. Therefore, the relative deflection of pavement layer decreases as the pavement depth increases.

Published in	American Journal of Civil Engineering (Volume 6, Issue 5)
DOI	10.11648/j.ajce.20180605.11
Page(s)	141-146
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Deflections, Flexible Pavement, Layers Thickness, Pavement Modulus

References

[1]	Gupta. (2014). comparative structural analysis of flexible pavements using finite element method. The International Journal of Pavement Engineering and Asphalt Technology, Volume: 15, pp. 11-19.
[2]	Taneerananon, Somchainuek, Thongchim, & Yandell. (2014). analysis of stress, strain and deflection of pavements using finite element. Journal of Society for Transportation and Traffic Studies, Vol. 1 No. 4.
[3]	Taneerananon, Somchainuek, Thongchim, & Yandell. (2014). analysis of stress, strain and deflection of pavements using finite element. Journal of Society for Transportation and Traffic Studies, Vol. 1 No. 4.
[4]	Garba, R. (2002). A Thesis on Permanent Deformation properties of Asphalt Concrete mixtures. Department of Road and Railway Engineering, Norwegian University of Science and Technology.
[5]	Ethiopian Roads Authority Standard Manuals. Jimma-Mizan Road upgrading project. 2007.
[6]	Burmister, D. (1945). The general theory of stresses and displacements in layered soil system. Journal of applied physics, vol. 16, pp. 84-94, 126-126-127, 296-302.
[7]	Emmanuel O., E. a. (2009). Fatigue and rutting strain analysis of flexible pavements designed using CBR methods. African Journal of Environmental Science and Technology, Vol. 3 (1 2), pp. 41 2-421.
[8]	Yang, H. (1973). Asphalt Pavement Design – The Shell Method, Proceedings. 4th International Conference on Structural Design of Asphalt Pavements.
[9]	Zaghloul S and White, T. (1993). Use of a Three Dimensional, Dynamic Finite Element Program for Analysis of Flexible Pavement. In Transportation Research Record 1388, TRB, Washington D. C., pp. 6069.
[10]	Emmanuel O., E. a. (2009). Fatigue and rutting strain analysis of flexible pavements designed using CBR methods. African Journal of Environmental Science and Technology, Vol. 3 (1 2), pp. 41 2-421.
[11]	Choudhary, D. K.; Joshi, Y. P. 2014. A Detailed Study of Cbr Method for Flexible Pavement Design, International Journal of Engineering Research and Applications, 4 (6), pp. 239-253.
[12]	Cai, Y.; Sangghaleh, A.; Pan, E. 2015. Effect of anisotropic base/interlayer on the mechanistic responses of layered pavements, Computers and Geotechnics, 65, pp. 250–257.
[13]	Androjić, I., Dimter, S. 2015. Influence of compaction temperature on the properties of Marshall Specimens. // The Baltic Journal of Road and Bridge Engineering. X (2015), 4, pp. 309-315.
[14]	Gupta, A., Kumar, P., and Rastogi, R. (2014), “Critical Review of Flexible Pavement Performance Models”, Korean Society of Civil Engineers (KSCE), Journal of Civil Engineering, Springer, Vol. 18, No. 1, pp. 142-148.
[15]	Abed, A. H., and Al-Azzawi, A. A. (2012), “Evaluation of Rutting Depth in Flexible Pavements by Using Finite Element Analysis and Local Empirical Model”, American Journal of Engineering and Applied Sciences, Vol. 5, No. 2, pp. 163-169.

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APA Style

Tarekegn Kumela. (2018). Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road). American Journal of Civil Engineering, 6(5), 141-146. https://doi.org/10.11648/j.ajce.20180605.11

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ACS Style

Tarekegn Kumela. Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road). Am. J. Civ. Eng. 2018, 6(5), 141-146. doi: 10.11648/j.ajce.20180605.11

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AMA Style

Tarekegn Kumela. Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road). Am J Civ Eng. 2018;6(5):141-146. doi: 10.11648/j.ajce.20180605.11

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@article{10.11648/j.ajce.20180605.11,
  author = {Tarekegn Kumela},
  title = {Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)},
  journal = {American Journal of Civil Engineering},
  volume = {6},
  number = {5},
  pages = {141-146},
  doi = {10.11648/j.ajce.20180605.11},
  url = {https://doi.org/10.11648/j.ajce.20180605.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20180605.11},
  abstract = {Road building in Ethiopia is increasingly in demand to meet medium and long terms development programs. Roads are constructed radiating from the capital city of the country in all direction. The objective of this research study is to evaluate the flexible pavement deflections with respect to pavement depth using Software along Jimma to Seka road segment and compare the laboratory results with the Ethiopian Road Authority (ERA) standards. Ever Stress Software (ESS) is a numerical analysis technique to obtain the deflection of pavement layers. The methodology of this research was finding the sensitivity of the road parameters (dimension, layers thickness, elastic modulus, Poisson’s ratio, loads and pressures) in reducing the major causes of failure in asphalt pavement fatigue cracking and rutting due to vertical surface deflections, the critical tensile strains at the bottom of the asphalt layer and the critical compressive strains on the top of subgrade. The analytical method used was the elastic modulus and Poisson’s ratio of the pavement materials as design parameters after CBR results of each layers was obtained. The expected outputs have shown that the displacement or deflection (uz) was as high as 0.38mm in the asphalt surface and gradually decreased as the pavement thickness increased. Large values of deflections indicates an over stressed condition which results in the pavement surface to crack and distortion as a results of fatigue or accumulated plastic deformation. Therefore, the relative deflection of pavement layer decreases as the pavement depth increases.},
 year = {2018}
}

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TY  - JOUR
T1  - Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)
AU  - Tarekegn Kumela
Y1  - 2018/11/15
PY  - 2018
N1  - https://doi.org/10.11648/j.ajce.20180605.11
DO  - 10.11648/j.ajce.20180605.11
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 141
EP  - 146
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20180605.11
AB  - Road building in Ethiopia is increasingly in demand to meet medium and long terms development programs. Roads are constructed radiating from the capital city of the country in all direction. The objective of this research study is to evaluate the flexible pavement deflections with respect to pavement depth using Software along Jimma to Seka road segment and compare the laboratory results with the Ethiopian Road Authority (ERA) standards. Ever Stress Software (ESS) is a numerical analysis technique to obtain the deflection of pavement layers. The methodology of this research was finding the sensitivity of the road parameters (dimension, layers thickness, elastic modulus, Poisson’s ratio, loads and pressures) in reducing the major causes of failure in asphalt pavement fatigue cracking and rutting due to vertical surface deflections, the critical tensile strains at the bottom of the asphalt layer and the critical compressive strains on the top of subgrade. The analytical method used was the elastic modulus and Poisson’s ratio of the pavement materials as design parameters after CBR results of each layers was obtained. The expected outputs have shown that the displacement or deflection (uz) was as high as 0.38mm in the asphalt surface and gradually decreased as the pavement thickness increased. Large values of deflections indicates an over stressed condition which results in the pavement surface to crack and distortion as a results of fatigue or accumulated plastic deformation. Therefore, the relative deflection of pavement layer decreases as the pavement depth increases.
VL  - 6
IS  - 5
ER  -

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Author Information

Tarekegn Kumela

Faculty of Civil and Environmental Engineering, Jimma University, Institute of Technology, Jimma, Ethiopia

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Plain Text BibTeX RIS

APA Style

Tarekegn Kumela. (2018). Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road). American Journal of Civil Engineering, 6(5), 141-146. https://doi.org/10.11648/j.ajce.20180605.11

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ACS Style

Tarekegn Kumela. Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road). Am. J. Civ. Eng. 2018, 6(5), 141-146. doi: 10.11648/j.ajce.20180605.11

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AMA Style

Tarekegn Kumela. Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road). Am J Civ Eng. 2018;6(5):141-146. doi: 10.11648/j.ajce.20180605.11

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@article{10.11648/j.ajce.20180605.11,
  author = {Tarekegn Kumela},
  title = {Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)},
  journal = {American Journal of Civil Engineering},
  volume = {6},
  number = {5},
  pages = {141-146},
  doi = {10.11648/j.ajce.20180605.11},
  url = {https://doi.org/10.11648/j.ajce.20180605.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20180605.11},
  abstract = {Road building in Ethiopia is increasingly in demand to meet medium and long terms development programs. Roads are constructed radiating from the capital city of the country in all direction. The objective of this research study is to evaluate the flexible pavement deflections with respect to pavement depth using Software along Jimma to Seka road segment and compare the laboratory results with the Ethiopian Road Authority (ERA) standards. Ever Stress Software (ESS) is a numerical analysis technique to obtain the deflection of pavement layers. The methodology of this research was finding the sensitivity of the road parameters (dimension, layers thickness, elastic modulus, Poisson’s ratio, loads and pressures) in reducing the major causes of failure in asphalt pavement fatigue cracking and rutting due to vertical surface deflections, the critical tensile strains at the bottom of the asphalt layer and the critical compressive strains on the top of subgrade. The analytical method used was the elastic modulus and Poisson’s ratio of the pavement materials as design parameters after CBR results of each layers was obtained. The expected outputs have shown that the displacement or deflection (uz) was as high as 0.38mm in the asphalt surface and gradually decreased as the pavement thickness increased. Large values of deflections indicates an over stressed condition which results in the pavement surface to crack and distortion as a results of fatigue or accumulated plastic deformation. Therefore, the relative deflection of pavement layer decreases as the pavement depth increases.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Evaluation of Flexible Pavement Deflections with Respect to Pavement Depths Using Software (A Case Study Jimma to Seka Road)
AU  - Tarekegn Kumela
Y1  - 2018/11/15
PY  - 2018
N1  - https://doi.org/10.11648/j.ajce.20180605.11
DO  - 10.11648/j.ajce.20180605.11
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 141
EP  - 146
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20180605.11
AB  - Road building in Ethiopia is increasingly in demand to meet medium and long terms development programs. Roads are constructed radiating from the capital city of the country in all direction. The objective of this research study is to evaluate the flexible pavement deflections with respect to pavement depth using Software along Jimma to Seka road segment and compare the laboratory results with the Ethiopian Road Authority (ERA) standards. Ever Stress Software (ESS) is a numerical analysis technique to obtain the deflection of pavement layers. The methodology of this research was finding the sensitivity of the road parameters (dimension, layers thickness, elastic modulus, Poisson’s ratio, loads and pressures) in reducing the major causes of failure in asphalt pavement fatigue cracking and rutting due to vertical surface deflections, the critical tensile strains at the bottom of the asphalt layer and the critical compressive strains on the top of subgrade. The analytical method used was the elastic modulus and Poisson’s ratio of the pavement materials as design parameters after CBR results of each layers was obtained. The expected outputs have shown that the displacement or deflection (uz) was as high as 0.38mm in the asphalt surface and gradually decreased as the pavement thickness increased. Large values of deflections indicates an over stressed condition which results in the pavement surface to crack and distortion as a results of fatigue or accumulated plastic deformation. Therefore, the relative deflection of pavement layer decreases as the pavement depth increases.
VL  - 6
IS  - 5
ER  -

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