This paper highlights the benefits of incorporating wastes such as powdered gypsum wall boards (PGP) or drywalls, ground granulated blast furnace slag (GGBS) and quarry dust on improved performance of Controlled low strength materials (CLSM), which is a self-flowing cementitious backfill material. Drywalls, a construction & demolition waste, are known to pollute atmosphere by releasing harmful H2S gas when dumped at landfills. In literature, ternary binder combination of powdered gypsum wall boards, fly ash and cement resulted in reduced compressive strength values of CLSM specimens at 56 days when compared with 28 days. This paper investigates fresh and hardened properties of novel CLSM mixtures, and emphasizes on the incorporation of GGBS instead of fly ash which is efficient and helps to overcome the reduced compressive strengths at later ages. However, this was observed to be more effective only at lesser water contents.