Bearing Ratio Behavior of Sand Overlying Clay with Treated Coir Geotextiles at the Interface
Vivek Vivek, Rakesh Kumar Dutta
Abstract
The paper presents the bearing ratio behavior of sand overlying clay with two woven and two non-woven treated coir geotextiles at the interface. The chemicals such as p-aminophenol, sodium periodate and sodium hydroxide were used to treat the coir geotextiles. The results indicated that the unsoaked/soaked bearing ratio of the sand overlying clay with woven coir geotextiles at the interface decreased after the chemical treatment whereas the trend was reverse in case non-woven geotextiles. The unsoaked bearing ratio of the sand overlying clay with the treated/untreated woven and non-woven coir geotextiles at the interface was higher than the soaked bearing ratio. The C: O ratio both for the woven and the non-woven coir geotextiles increased after the chemical treatment. The emissions of Si increased for the woven coir geotextiles whereas it decreased for the non-woven coir geotextiles after the chemical treatment. The chemical treatment results in the modification of the surface of both the untreated woven and non-woven coir geotextiles.