Studies of Modulus of Resilience on Unpaved Roads Reinforced with Untreated/Treated Coir Geotextiles

Abstract

Using the repeated or cyclic load test in a laboratory, the current study investigates the modulus of resilience of unpaved roads model reinforced with untreated/treated woven/non-woven coir geotextile. P-aminophenol, sodium periodate, and sodium hydroxide were the chemicals that used to treat the coir geotextiles. Untreated/treated coir geotextiles were placed at the interface under unsoaked/soaked conditions, and laboratory cyclic load testing for the sand layer overlaying clay was performed in a test tank. Models reinforced with untreated/treated woven coir geotextiles performed better than models reinforced with untreated/treated non-woven coir geotextiles, according to the study’s findings. Furthermore, in the unsoaked state, models reinforced with untreated/treated woven and non-woven coir geotextiles better than the models reinforced with soaked coir geotextiles in terms of modulus of resilience. Untreated/treated woven/non-woven coir geotextiles can increase the material’s maximum energy per volume that it can absorb in unpaved roads when placed at the interface of the sand layer overlying clay. This study is very beneficial, especially in situations where highway subgrade design necessitates a reasonably accurate estimation of strength and stiffness characteristics.

Keywords

• woven coir geotextiles
• non-woven coir geotextiles
• chemical treatment
• cyclic loading
• unpaved road
• soaked