Abstract
This study developed a framework that evaluated the carbon emission and cost-effectiveness of fly ash, rice husk ash, and face masks as additives for soil stabilization. The research scope of this study included modification of soil using varying dosages of additives, quantification of improvement in soil properties, pavement design under different traffic conditions, and estimation of cost and emission. In this process, a total of 30 pavement sections were considered, and Euclidean distance method was employed to develop a combined ranking of the pavement alternatives based on their resource consumption and environmental impacts. The study findings showed that Rice Husk Ash and Fly Ash offered lower costs of construction and carbon footprint than the control pavement sections under all traffic conditions. Additionally, face mask was found to be suitable under low traffic conditions at minimum content. It is envisaged that the framework developed in this study would provide important insights to the policymakers, engineers, practitioners, road agencies, and other stakeholders in assessing various pavement alternatives that ensure the economic and sustainable development of transportation infrastructure.
Published Version
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