Durability Analysis of the Nanomaterial Stabilized Granular Mix as Subbase Layer for High Volume Pavement

Pond ash may be useful for high volume pavement subbase construction following sufficient stabilization. This work reports that stabilizing nanomaterials has an impact on the strength and durability of pond ash. The Sand-Pond-Ash-Lime samples were cured for 7, 14, and 28 days using a nanomaterial dose of 1 fraction Terrasil 1 fraction Zycobond diluted using 150 fraction water to 1 fraction Terrasil 1 fraction Zycobond diluted using 400 fraction water. Samples were put through tests for unconfined compression strength, California bearing ratio, long-term durability, and ultrasonic pulse velocity. The code-specified values for the subbase-specific material of High Volume Pavement are satisfied by the unconfined compressive strength values of 2.218 MPa and the long-term durability values achieved. However, after 8–9 cycles, the rate of change in velocity considerably drops off and nearly becomes constant, pointing to greater ingredient binding. However, there is no permeability for the mixed sample in the Sand-Pond-Ash-Lime mix stabilized with 1 fraction Terrasil 1 fraction Zycobond 300 fraction water.