ESTABLISHMENT OF THE UNIT PRICES FOR RIGID PAVEMENTS AND INITIAL COST COMPARISON OF FLEXIBLE AND RIGID PAVEMENTS FOR THE STATE ROADS OF TÜRKİYE

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2022-8-31

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AKBELEN, Mustafa Barışcan

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Road pavement types are generally classified into two as flexible (asphalt) and rigid (concrete) pavements. These two are differentiated from each other depending on factors such as the binding materials used, the construction methods, and the load transfer mechanisms. The first important step in long-lasting, and economical pavement construction projects is the selection of the right type based on the technical and economic parameters. There are many studies aiming to compare the cost of flexible and rigid pavements in the world. However, in Türkiye the lack of the existence of the official unit prices for concrete roads not only limit the applicability of such comparisons but also the widespread use of concrete roads in the KGM (Turkish General Directorate of Highways) road network. This study aims to compare the initial construction costs of jointed plain concrete pavements (JPCP) and hot mix asphalt (HMA) pavements that could be used in the state roads of the KGM road network in a systematic manner. Within the scope of the study, JPCP and HMA pavements were designed using the official KGM guidelines under the same road class, project life, traffic load, soil, and environmental/climatic conditions. Then, unit price, analysis and descriptions of JPCP were prepared by examining two concrete road construction sites in Türkiye and abroad. Finally, the initial construction costs of JPCP and HMA pavements that will be used in the state roads of the KGM road network are compared by using the equivalent annual cost method. As a result, it was determined that JPCP is economically efficient than HMA at about 32%, 25% and 20% for high, medium and low volume roads when the interest rate is taken as 5% as an optimistic scenario. For a possible-case scenario of 15% interest rate, JPCP seems to be feasible for high to medium volume roads, especially for low-grade subgrade strengths. The above-mentioned findings explain why concrete pavements are commonly used in the roads with high volume of traffic such as the inter-state/city roads of USA.

Subject Keywords

Rigid Pavements, Flexible Pavements, Unit Prices for Concrete Pavements, Equivalent Annual Cost Comparison

URI

https://hdl.handle.net/11511/99657

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. B. AKBELEN, “ESTABLISHMENT OF THE UNIT PRICES FOR RIGID PAVEMENTS AND INITIAL COST COMPARISON OF FLEXIBLE AND RIGID PAVEMENTS FOR THE STATE ROADS OF TÜRKİYE,” M.S. - Master of Science, Middle East Technical University, 2022.