Abstract
Hydro-mechanical characteristics of compacted sand-bentonite (SB) mixture gets affected significantly due to desiccation cracking and can cause a severe rise in hydraulic conductivity and differential settlement. Glass fiber can be added to the SB mixture to reduce the desiccation cracking. However, the addition of glass fiber to SB mixture can adversely affect its hydro-mechanical behavior. Present study was conducted to analyze the impact of the inclusion of the glass fiber on the hydro-mechanical behavior of SB mixture. Various experiments were performed on SB mixture added in a ratio of 70:30 and reinforced with 1% of glass fiber of the aspect ratio of 40, 80 and 120. Test results suggested that effective strength parameter, initial tangent modulus and energy absorption capacity increased; whereas, the swelling tendency decreased due to the addition of glass fiber. The results also indicated that the compressibility, hydraulic and shrinkage behavior of the mixture got impacted significantly due to the presence of the fiber.
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