Liquefaction resistance of fiber-reinforced pond ash

Abstract

The present experimental study evaluates the liquefaction resistance of pond ash reinforced with different types of fibers (polypropylene, jute cellulose, and coir fibers). A series of stress-controlled cyclic simple shear (CSS) tests was performed to study the liquefaction resistance of fiber-reinforced pond ash. Cyclic loading was applied at 1 Hz frequency under 100 kPa of overburden pressure. All specimens were prepared at 95% of maximum dry density (MDD) and optimum moisture content (OMC) of pond ash. For each fiber type, a minimum of three CSS tests were conducted at different cyclic stress ratios (CSR) to obtain the cyclic resistance ratio (CRR). CRR was determined as the CSR required to liquefy the specimen in 15 loading cycles. This experimental research reported that including jute cellulose fibers in pond ash increased the liquefaction resistance of pond ash. The inclusion of other fibers showed a minimal increase in liquefaction resistance.