Abstract
The present study compares conventional pavement and perpetual pavement in the case of ground-granulated blast-slag-stabilized black cotton soil. Ground-granulated blast slag (GGBS) can be used for pavement over weak subgrade. We added slag to soil in proportions of 10 %, 20 %, 30 %, and 40 %. After determining the engineering properties of the soil and GGBS, modified Proctor compaction and California bearing ratio tests were performed. After determining these values, six combinations for conventional pavements and perpetual pavements with treated and non-treated subgrades were designed using a mechanistic-empirical methodology. The pavements were designed using IITPAVE software. The relevance of perpetual pavements was justified based on life-cycle cost assessment and carbon dioxide emissions for a duration of 50 years. The present study concludes that for the implementation of perpetual pavements in a developing country such as India, there is a need for further study in the domain of soil stabilization as well as usage of high-stiffness base materials considering the rising cost of bitumen.
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