Abstract:

The research work investigated the effectual use of bagasse fibre of costaceae lacerus and lime in combination of 0.2+2.5%, 0.5% + 5.0%, 0.75% + 7.5% and 1.0% + 10% to soils ratio in the modification of weak soils of low properties for subgrade pavement. Soils were classified as A-2-6 SC and A-2-4 SM on the AASHTO classification schemes / Unified Soil Classification System from preliminary investigation and fell below approved standard for its application as road pavement structures. Results of consistency limits (Plastic index) properties decreased with increased in CLBF + lime inclusion to lateritic soils. The swelling potential of treated soil decreased with the inclusion of additives of 0.75% + 7.5% percentage ratio to soils. Unconfined compressive strength results showed tremendous increased with an increase in additive percentages. California bearing ratio of unsoaked and soaked reached optimum values percentage inclusion at 0.75% +7.5 %, beyond this value, crack was formed which resulted to potential failure. Entire results showed the latent use of costaceae lacerus and lime in combined actions as soil stabilizers.

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