Improvement of the quality of the route is necessary because of its importance in connecting countries of the Western Balkans to central and western Europe. This is the worst section of the road from Albania via Montenegro and Bosnia and Herzegovina to the corridor Vc, which passes through the central part of Bosnia and Herzegovina. The route of the road is very narrow with sharp bends, which requires its extension, correction, and in some parts relocation. It was therefore necessary first to give geological evaluation of the state of route in terms of exploration and characteristics of the rocks involved in the structure of the ground along the route.We analyzed the available documentation of previous studies and conducted field data. Summarizing the results available, it was given the evaluation of the degree of exploration of the terrain and the need for new research for detailed consideration of the characteristics of the terrain, especially in the construction of facilities on the route.
Revitalization of the railways is a started project of the European Union, where is necessary for all the tracks of the former Yugoslavia to be revitalized in order to improve their train speed quality up to 120 km / hour. The railway that passes through the middle of Bosnia and Herzegovina, from north to south, is the Corridor Vc and connects Budapest, that is Central Europe with the Adriatic Sea. The largest part of the railway was revitalized, and researched section is one of several remaining that need to be investigated in detail before revitalized. It is expected its full completion by 2010. During the research of mentioned section, in detail were studied the characteristics of the terrain and the buffer layer of railway along its route. The level of detail was such that it had allocated all the characteristics of lithological members and embankments per chainages.
Application of dynamic penetration is not widely spread, considering the limited number of data that can be obtained. When а larger number of boreholes on terrains built of soft rocks is required, there exists economic justification for the use of certain dynamic tests that can give data about resistance and soil density. Also, in parts where the access is difficult or impossible for the machines for soil probing, penetrometer tests are only possible for obtaining certain parameters. Correlation between point of resistance and shear strength can obtain data of undrained firmness shear strengths for clayey soils, and based on the value of point of resistance the percentage of compaction of soil with quite real accuracy. The dynamic penetration test was applied along the route of the Zenica-Sarajevo railway. Since this is a rarely used type of research, the authors hope that this paper will serve to others as well, towards further research on better correlations between the two types of methods. It is necessary to make the method with penetration as applicable as possible, because it can be used in very inaccessible places with many more test points and does not require large financial investments.
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