Engineering Behavior of Sand – Bentonite Mixtures: A Review

Abstract

Sand-bentonites mixtures are usually used as a liner material in several geotechnical engineering applications including landfill, earth - backfilled trench slurry cutoff walls, and hydraulic waste containments due to its low permeability. The sands - bentonite barriers is a way for controlling the effects of waste disposal materials on ground water by mixing sand soil with a small amount of bentonite. This paper presents the previous researches in the direction of physical behaviors and application of sand-bentonite mixture. It was observed that the mixtures of sand and bentonite improved the maximum dry density, compressibility, strength, and hydraulic conductivity.