Abstract
The features and interdependences between environment and economics, connected to the construction of asphalt road pavements, can be evaluated by a wide diversity of decision support tools. The characteristics of these tools and the complementary informative system provide complex assessments. Their final purpose is to ensure an optimum sustainable constructive solution. The present paper aims, along a comparative analysis, to evaluate the environmental and economic impact resulted from the construction of road pavements with asphalt mixtures that integrate different percentages of RAP. The objective was to highlight the characteristics, benefits and limitations of these procedures and conclude on their usage and viability. The evaluation was performed according to LCA and LCC methodology and facilitated by asPECT computer software. Performing this study was intended to facilitate the researchers and practitioners analytical choice and to offer a personal overview on the topic.
Highlights
The present paper has the objective to evaluate, along a comparative perspective, specific to three European countries, the ecologic and economic impact resulted from the usage of flexible asphalt pavements integrating different percentages of Reclaimed Asphalt Pavement (RAP)
The analysis was performed based on two corresponding methodologies namely: Life Cycle Assessment (LCA) and Life Cycle Cost Assessment (LCCA)
The present paper was focused on providing a comparative overview on the environmental and economic impact of asphalt pavements that integrate RAP
Summary
The present paper has the objective to evaluate, along a comparative perspective, specific to three European countries, the ecologic and economic impact resulted from the usage of flexible asphalt pavements integrating different percentages of Reclaimed Asphalt Pavement (RAP). For the present paper the best suiting software was considered to be asPECT, a program developed by the researchers from Transport Research Laboratory (TRL), England, particularized on performing LCA on asphalt pavements This software provides information on the environmental impact, expressed as kg equivalent CO2 emissions, resulted during the process of construction of flexible asphalt pavements. In order to provide a solution to the environmental impact issue, for the analysis several road pavement construction alternatives have been considered, extended from traditional asphalt pavement compositions to new compositions that integrate different percentages of RAP.
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