MINING BACKFILL FORMULATIONS FROM VARIOUS CEMENTITIOUS AND WASTE MATERIALS
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Published:2002
J H Potgieter, S S Potgieter, 2002. "MINING BACKFILL FORMULATIONS FROM VARIOUS CEMENTITIOUS AND WASTE MATERIALS", Challenges of Concrete Construction: Volume 5, Sustainable Concrete Construction: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Thomas D. Dyer, Judith E. Halliday
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Backfill in mines has several important functions, e.g. to prevent collapse of surface regions and to free up new areas for extraction of ores/minerals. Various materials can be used for this purpose, provided that the final mixture reached a minimum compressive strength of 5–6 MPa and is economical. This paper describes various backfill mixtures composed of waste materials from other industrial processes, like fly ash, slag and phosphogypsum with small cement additions. The resultant cementitious matrices are compared in terms of their strength performance, flowability and final constitution cost. Several formulations were found to show promise for practical applications.
INTRODUCTION
EXPERIMENTAL PROCEDURE
RESULTS AND DISCUSSION
CONCLUSIONS
REFERENCES
