Controlled low strength material (CLSM) is self-compacting flowable fill which is primarily used as backfill. This book presents the investigation done on CLSM mixtures made using NaOH, lime, bottom ash, fly ash, and water. A series of experiments on fresh state, viz. flowability, fresh density, segregation resistance and bleeding were conducted. The CLSM mixtures were also tested for water absorption, hardened density, ultrasonic pulse velocity and compressive strength at hardened state. The flowability of all samples is 300 20 mm and increase in FA/binder ratio reduces the flowability of...