Mixture Quality and Cost-Benefit Analysis of Concrete Overlay Application in Lithuania Pavements

Heavy vehicles traffic flow and loads are increasing every year and influence faster degradation of asphalt pavement. A lot of money is expended on distressed pavement repair and rehabilitation, so sustainable pavement structure development is one of priority in Lithuania. Flexible (asphalt) pavement design lifetime is 20 years and often the first distresses emerge after the first five years of exploitation. Meanwhile, PIARC Long-life pavement concept defines, that strategic national significance roads and high traffic urban streets pavement lifecycle period should be from 40 to 50 years. Assessing rising oil and bitumen prices and costs for asphalt pavement rehabilitation and maintenance an alternative materials solutions is analyzed. The objective of article is to evaluate suitability of concrete mixture, produced in Lithuania, through compressive strength accordance with requirements. Compare different types of overlays through materials and construction expenses, and to compare traditional asphalt and concrete pavement overlays considering 35 years of exploitation maintenance and repair costs.