| Autor: |
OLAREWAJU, Akinola Johnson, AFOLABI, Rapheal Rafiu |
| Předmět: |
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| Zdroj: |
International Journal of Advanced Geotechnic & Impact Engineering; Jul2022, Vol. 2 Issue 1, p55-63, 9p |
| Abstrakt: |
Road construction as a viable means for economic advancement of any country requires much attention. The attention for this is in different facet and the mode of construction as well as cost of construction affects the quality and size of the road to be constructed. Developing nation with verse arable land and inter lands needs enough quality roads to link the rural areas with the urban areas where mainly agricultural activities are done in large scale. The black cotton (expansive) soil was obtained from a borrow pit on the basement complex at Igbo-Ora in Oyo State, South-Western Nigeria. The borrow site lies within the coordinates Longitude 7⁰24'45" and latitude 3⁰18'34". The black cotton soils used in the study were collected from depths between 0.3-1.0m below ground level. In line with BS 1377 (1990) and other relevant codes, California Bearing-Ratio (CBR) tests were conducted on the materials of black cotton (on basement complex) to determine the suitability of the expansive soil for use as sub-grade, sub)base or base materials in road construction. It is evidently clear from the results that the CBR value of the soil is low and could be classified as poor soil. Even though the soil could be used as sub-grade, and in order to reduce the overall construction cost of highways, it will still be required that soil be stabilized with any of the locally available stabilized agents or materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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