Abstract
Because of the advancements in the economy, roads are being developed at a fast pace across India. The current guidelines for designing flexible pavements in India depend heavily on the use of stone aggregates in sub-base and base courses of flexible pavements, leading to the fast depletion of aggregates. Also, transportation of aggregates to road construction sites at high altitudes is not feasible due to climatic restraints (heavy rainfall/snowfall). The present study aims to reduce aggregates in road construction by proposing a cement-soil mixture for application as cement-treated sub-base course and cement-treated base course. A granular soil was treated with the varying dosage (2, 3, 4, 5, 6, 7, 8%) of cement (OPC 43 grade), and cubical samples of 150 mm length were prepared. The samples were tested after a curing period of 7 days. Following this, the samples were tested for strength by performing an unconfined compressive strength test. The durability of the samples was tested by subjecting the samples to wet–dry and freeze–thaw cycles. The required dosage of cement fulfilling the criteria of strength and durability was recommended following the guidelines of the Indian Road Congress.KeywordsPavementsCementCement-treated sub-baseCement-treated base
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