Blending of Cinder with Fine-Grained Soil to be Used as Sub-Base Materials (The Case of Butajira-Gubre Road)

Eshete, Yitayou (2011) Blending of Cinder with Fine-Grained Soil to be Used as Sub-Base Materials (The Case of Butajira-Gubre Road). Masters thesis, Addis Ababa University.

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Abstract

In road construction, the use of locally available materials should be made as much as possible. However, these materials are not always suitable and when appropriate material cannot be found in areas close to the construction site, very high prices have to be paid with significant time delays and cost increases. In many parts of Ethiopia, there is widely distributed cinder gravel. However, this material has the problem of compaction due to its light weight, its rough circular surface and its high porosity. This thesis deals with investigating the performance of mechanically stabilized natural cinder gravels to be used as road sub-base material. To achieve the Ethiopia Road Authority manual specification, the cinder gravel was blended with some trail proportion of 0, 5, 10, 15, 20, and 25 % of fine-grained soil by mass and different tests including grain size distribution, Atterberg Limit, compaction, CBR, LAA, absorption and linear Shrinkage are conducted in the laboratory. Based on the laboratory test results it is shown that, from both MDD- percent of fine-grained soil curve and CBR-percent of fine-grained soil curve, the optimum amount of fine-grained soil required in order to improve its properties is 19 % by mass proportion.

Item Type: Thesis (Masters)
Uncontrolled Keywords: sub-base, Cinder Gravel, Blending of sub-base material, Optimum fine-grained soil Content, Gradation, Arithmetical proportioning.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering
T Technology > TE Highway engineering. Roads and pavements
T Technology > TP Chemical technology
Divisions: Africana
Depositing User: Andriamparany Edilbert RANOARIVONY
Date Deposited: 06 Jul 2018 08:26
Last Modified: 06 Jul 2018 08:26
URI: http://thesisbank.jhia.ac.ke/id/eprint/6673

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