caa a22 4500 467930643 CHVBK 20180406152942.0 cr unu---uuuuu 170328e20061201xx s 000 0 eng 10.1007/s10706-006-6805-8 doi (NATIONALLICENCE)springer-10.1007/s10706-006-6805-8 Geotechnical characterization of fly ash composites for backfilling mine voids [Elektronische Daten] [Manoj Mishra, U. Karanam] Backfilling of mine voids is mandatory to avoid subsequent ground stability problems in the form of subsidence. River sand and mill tailings have been widely used since a long time as backfilling materials. However, with a strict regulation banning river sand mining in India, research for developing alternative engineering materials substituting sand has gained importance. In the present study four fly ash composite materials (FCMs) was developed from the fly ash obtained from a captive thermal unit of Rourkela Steel Plant (RSP). The main constituent of the composite were fly ash, lime and gypsum. Detailed physical, and engineering properties were determined for the FCMs. Significant increases in the compressive strength were obtained after 56days of curing time. A detailed SEM studies was undertaken to account for the increase in strength with time. The fly ash composite developed from RSP has potential to be used as substitute to sand for backfilling the mine voids. Springer, 2006 backfill nationallicence fly ash composites nationallicence gypsum nationallicence lime nationallicence mine voids nationallicence Mishra Manoj Department of Mining Engineering, National Institute of Technology, 769 008, Rourkela, India aut Karanam U. Department of Mining Engineering, Indian Institute of Technology, 721 302, Kharagpur, India aut Geotechnical & Geological Engineering Kluwer Academic Publishers 24/6(2006-12-01), 1749-1765 0960-3182 24:6<1749 2006 24 10706 https://doi.org/10.1007/s10706-006-6805-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10706-006-6805-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mishra Manoj Department of Mining Engineering, National Institute of Technology, 769 008, Rourkela, India aut NATIONALLICENCE 700 1- Karanam U. Department of Mining Engineering, Indian Institute of Technology, 721 302, Kharagpur, India aut NATIONALLICENCE 773 0- Geotechnical & Geological Engineering Kluwer Academic Publishers 24/6(2006-12-01), 1749-1765 0960-3182 24:6<1749 2006 24 10706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer