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Development and utilization of controlled low-strength material (CLSM), a flowable self-compacting material using industrial wastes is an effective way of sustainable infrastructure development. In the present study, an effort has been made to characterize ferrochrome slag, a less explored industrial waste as a construction material in general and FS as a base material with cement and fly ash for CLSM material, in particular. Different tests such as scanning electron microscope (SEM), X-ray diffraction (XRD), X-ray fluorescence (XRF), optical microscope image, compaction, electrical conductivity, total dissolved solids (TDS), thermal conductivity are conducted to characterize ferrochrome slag as an alternate construction material. Then the properties of developed CLSM are discussed in terms of its flowability, fresh density, bleeding, unconfined compressive strength (UCS), settlement analysis and California bearing ratio (CBR) values. Based on the above results it was observed the FS can be used as a structural fill material with cement and fly ash for infrastructure development thereby conserving the natural resources, utilizing the industrial wastes and helping in sustainable development. [ABSTRACT FROM AUTHOR]

Mine overburden removed during surface mining is considered as “waste” or “spoil” that is consuming a vast tract of land for storage. Due to high ash content (30–50%) of Indian coals, 130 million tons of fly ash per year is generated with less than 50% of it is being used. Many a time thermal power plants are close to coal mines. Hence, in the present study it is proposed that a mixture can be prepared using fly ash and coal mine overburden with or without cement, which can be used as a stabilized pavement material. The present study deals with characterization of cement stabilized mine overburden fly ash mixture as a pavement material. Mixtures with varying cement percentage of 4–7% were prepared. Based on the unconfined compressive strength and California Bearing ratio values of the stabilized mixture, it was observed that it can be used as a stabilized pavement material. [ABSTRACT FROM AUTHOR]