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| dc.contributor.author | Habtam, Tsega Abebe | |
| dc.date.accessioned | 2022-12-25T07:33:57Z | |
| dc.date.available | 2022-12-25T07:33:57Z | |
| dc.date.issued | 2022-08-31 | |
| dc.identifier.uri | http://ir.bdu.edu.et/handle/123456789/14741 | |
| dc.description.abstract | The California Bearing Ratio (CBR) has long been recognized as an important parameter for determining the bearing capacity of earth structures. The aim of this research is to develop the correlation between (Soaked California Bearing Ratio (SCBR) and unsoacked California Bearing Ratio (UCBR), Soaked California Bearing Ratio (SCBR) and Dynamic Cone Penetration Index (DCPI) and Unsoacked California Bearing Ratio (UCBR) and DCPI for Debre Tabor fine grained soil.The dynamic cone Penetrometer (DCP) is the most portable quick, in-situ evaluation device currently offered. Its correlations to CBR and use in pavement layer performance evaluation make it an interesting alternative to more expensive and time-consuming procedures. Many useful correlations were proposed by various researchers for soils in their area, and the DCP penetration index was used to develop these correlations. For this study several field and laboratory tests were conducted on the soil sample gathered from different location of Debre tabor town, Such as specific gravity ,moisture content ,field density,atterbergs limit test(LL,PL,PI),grain size analysis, Dynamic cone penetration index , maximum dry density and optimum moisture content ,both soaked at Optimum Moisture Content (OMC) and un soaked CBR at field dry density value . Based on the laboratory and field test results, analyses were performed using Statistical Package for the Social Science (SPSS) software and Microsoft excel tool Pak, and the applicability of the existing correlations for subgrade soil on the previously stated data was validated. As a result, a correlation was proposed in the study to predict the CBR values of the subgrade soil from dynamic cone penetration test results. The results of the statistical analysis shows that good correlation does exist between the dynamic cone penetration indexes (DCPI) and unsoacked CBR values with R 2 of 0.93 for fine grained soils of Debre tabor town. Keywords: CBR, DCPI, Subgrade Soils, Soaked California bearing ratio and SPSS. | en_US |
| dc.language.iso | en_US | en_US |
| dc.subject | CIVIL AND WATER RESOURCE ENGINEERING | en_US |
| dc.title | PREDICTION OF CBR USING DYNAMIC CONE PENETRATION FOR SUBGRADE SOILS: A CASE OF DEBRE TABOR TOWN | en_US |
| dc.type | Thesis | en_US |
