The Nekemte-Bedele road section is experiencing various flexible pavement failures, and a study is needed to determine the causes. The study will involve desk research, field inspections, and laboratory tests to identify the reasons for the failures in sub-base and subgrade materials. During field observations, different types of pavement failures were noted, such as rutting, potholes, edge cracking, transversal cracking, and raveling. Representative samples were taken from the deteriorated sections to perform laboratory tests like Atterberg limit, gradation or sieve analysis, compaction, and CBR. The laboratory results showed that most of the soil materials used along the road did not meet standard specifications. The plasticity indexes and liquid limits were high for all sub-base, selected fill, and natural subgrade soil samples, except for a few. The OMC was almost between 11.90 - 27.80%, and the MDD values ranged from 1.30 kg/m³ - 1.92 kg/m³. Most of the CBR values for the selected fill soil materials met specification requirements, while those of sub-base and natural subgrade soil materials did not meet the specifications, except for a few samples. The pavement failure was due to weak/poor soil pavement layer performance in different failed locations. The field recorded high, medium, and low levels of severity.
| Published in | Journal of Civil, Construction and Environmental Engineering (Volume 8, Issue 6) |
| DOI | 10.11648/j.jccee.20230806.12 |
| Page(s) | 107-117 |
| 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), 2024. Published by Science Publishing Group |
Flexible Pavements, Field Tests, Laboratory Tests, Nekemte-Bedele Pavement Failure, Sub-base Materials
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APA Style
Assefa, B., Fufa, F., Dinku, M. (2023). Assessment of the Causes of Pavement Failure Due to Sub-Base and Sub-Grade Materials Along Nekemte-Bedele Road. Journal of Civil, Construction and Environmental Engineering, 8(6), 107-117. https://doi.org/10.11648/j.jccee.20230806.12
ACS Style
Assefa, B.; Fufa, F.; Dinku, M. Assessment of the Causes of Pavement Failure Due to Sub-Base and Sub-Grade Materials Along Nekemte-Bedele Road. J. Civ. Constr. Environ. Eng. 2023, 8(6), 107-117. doi: 10.11648/j.jccee.20230806.12
AMA Style
Assefa B, Fufa F, Dinku M. Assessment of the Causes of Pavement Failure Due to Sub-Base and Sub-Grade Materials Along Nekemte-Bedele Road. J Civ Constr Environ Eng. 2023;8(6):107-117. doi: 10.11648/j.jccee.20230806.12
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Download@article{10.11648/j.jccee.20230806.12,
author = {Bulcha Assefa and Fikadu Fufa and Mesfin Dinku},
title = {Assessment of the Causes of Pavement Failure Due to Sub-Base and Sub-Grade Materials Along Nekemte-Bedele Road},
journal = {Journal of Civil, Construction and Environmental Engineering},
volume = {8},
number = {6},
pages = {107-117},
doi = {10.11648/j.jccee.20230806.12},
url = {https://doi.org/10.11648/j.jccee.20230806.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jccee.20230806.12},
abstract = {The Nekemte-Bedele road section is experiencing various flexible pavement failures, and a study is needed to determine the causes. The study will involve desk research, field inspections, and laboratory tests to identify the reasons for the failures in sub-base and subgrade materials. During field observations, different types of pavement failures were noted, such as rutting, potholes, edge cracking, transversal cracking, and raveling. Representative samples were taken from the deteriorated sections to perform laboratory tests like Atterberg limit, gradation or sieve analysis, compaction, and CBR. The laboratory results showed that most of the soil materials used along the road did not meet standard specifications. The plasticity indexes and liquid limits were high for all sub-base, selected fill, and natural subgrade soil samples, except for a few. The OMC was almost between 11.90 - 27.80%, and the MDD values ranged from 1.30 kg/m³ - 1.92 kg/m³. Most of the CBR values for the selected fill soil materials met specification requirements, while those of sub-base and natural subgrade soil materials did not meet the specifications, except for a few samples. The pavement failure was due to weak/poor soil pavement layer performance in different failed locations. The field recorded high, medium, and low levels of severity.
},
year = {2023}
}
TY - JOUR T1 - Assessment of the Causes of Pavement Failure Due to Sub-Base and Sub-Grade Materials Along Nekemte-Bedele Road AU - Bulcha Assefa AU - Fikadu Fufa AU - Mesfin Dinku Y1 - 2023/12/18 PY - 2023 N1 - https://doi.org/10.11648/j.jccee.20230806.12 DO - 10.11648/j.jccee.20230806.12 T2 - Journal of Civil, Construction and Environmental Engineering JF - Journal of Civil, Construction and Environmental Engineering JO - Journal of Civil, Construction and Environmental Engineering SP - 107 EP - 117 PB - Science Publishing Group SN - 2637-3890 UR - https://doi.org/10.11648/j.jccee.20230806.12 AB - The Nekemte-Bedele road section is experiencing various flexible pavement failures, and a study is needed to determine the causes. The study will involve desk research, field inspections, and laboratory tests to identify the reasons for the failures in sub-base and subgrade materials. During field observations, different types of pavement failures were noted, such as rutting, potholes, edge cracking, transversal cracking, and raveling. Representative samples were taken from the deteriorated sections to perform laboratory tests like Atterberg limit, gradation or sieve analysis, compaction, and CBR. The laboratory results showed that most of the soil materials used along the road did not meet standard specifications. The plasticity indexes and liquid limits were high for all sub-base, selected fill, and natural subgrade soil samples, except for a few. The OMC was almost between 11.90 - 27.80%, and the MDD values ranged from 1.30 kg/m³ - 1.92 kg/m³. Most of the CBR values for the selected fill soil materials met specification requirements, while those of sub-base and natural subgrade soil materials did not meet the specifications, except for a few samples. The pavement failure was due to weak/poor soil pavement layer performance in different failed locations. The field recorded high, medium, and low levels of severity. VL - 8 IS - 6 ER -
Department of Surveying Engineering, College of Engineering and Technology, Wallaga University, Nekemte, Ethiopia
Department of Surveying Engineering, College of Engineering and Technology, Wallaga University, Nekemte, Ethiopia
Department of Surveying Engineering, College of Engineering and Technology, Wallaga University, Nekemte, Ethiopia
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