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Utilization of kimberlite tailings as aggregates in concrete – strength and selected durability properties

Published online by Cambridge University Press:  05 March 2020

Mike Otieno Open the ORCID record for Mike Otieno [Opens in a new window]  and
Esina Ndoro
Mike Otieno*
Affiliation:
School of Civil and Environmental Engineering, University of the Witwatersrand, Johannesburg>
Esina Ndoro
Affiliation:
School of Civil and Environmental Engineering, University of the Witwatersrand, Johannesburg>
*
*Corresponding author: Mike Otieno (Mike.Otieno@wits.ac.za)
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Abstract

The feasibility of using kimberlite tailings as aggregates in concrete was assessed. Compressive strength and selected durability tests were carried out on concretes made using various replacement levels (0, 40, 60 and 100%) fine and/or coarse blended crushed andesite and kimberlite tailings as aggregates. A w/b ratio of 0.50 and a CEM I 52.5R were used. The results show that the kimberlite tailings as aggregates have a relatively high water demand which was manifested as a reduction in workability of the fresh concretes with kimberlite tailings as a proportion of either fine and/or coarse aggregates. The results also showed that the use of the kimberlite tailings as a proportion of either fine or coarse aggregates in concrete resulted in a decrease in both compressive strength and durability properties viz water sorptivity and oxygen permeability. This was partly attributed to the low workability of the concretes which is known to limit the degree of compaction of fresh concrete. It is envisaged that careful concrete mix proportioning including the use of admixtures and pre-wetting of the aggregates can be used to offset the negative effects of high water demand of the kimberlite aggregates.

Keywords

cement & concreteenvironmentstrength
Type
Articles
Information
MRS Advances , Volume 5 , Issue 25: African Materials Research Society 2019 , 2020 , pp. 1259 - 1266
Copyright
Copyright © Materials Research Society 2020

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References

Carrasco, E. V. M., Magalhaes, M. D. C., Santos, W. J. D., Alves, R. C. & Mantilla, J. N. R. (2017) Characterization of mortars with iron ore tailings using destructive and nondestructive tests. Construction and Building Materials , Vol. 313 , pp. 31-38.CrossRefGoogle Scholar
Kossoff, D., Dubbin, W. E., Alfredsson, M., Edwards, S. J. & Hudson-Edwards, K. A. (2014) Mine tailings dams: characteristics, failure, environmental impacts, and remediation. Applied Geochemistry , Vol. 51 , pp. 229-245.10.1016/j.apgeochem.2014.09.010CrossRefGoogle Scholar
Schoenberger, E. (2016) Environmentally sustainable mining: The case of tailings storage facilities. Resources Policy , Vol. 49 , pp. 119-128.CrossRefGoogle Scholar
Alexander, M. G. & Mindess, S. (2005) Aggregates in Concrete, Taylor and Francis Group, London.10.1201/9781482264647CrossRefGoogle Scholar
Thomas, B. S., Damare, A. & Gupta, R. C. (2013) Strength and durability characteristics of copper tailing concrete. Construction and Building Materials , Vol. 48 , pp. 894-900.10.1016/j.conbuildmat.2013.07.075CrossRefGoogle Scholar
Widojoko, L., Hardjasaputra, H. & Susilowati, (2014) Study of gold mine tailings utilization as fine aggregage material for producing shotcrete based on concept of green technology. 3rd international conference of engineering & technology development Faculty of Engineering and Faculty of Computer Science Bandar Lampung University, October 27th - 29th, 2014 (ISSN: 2301 – 6590), pp. 124-133.Google Scholar
Shettima, A. U., Hussin, M. W., Ahmad, Y. & Mirza, J. (2016) Evaluation of iron ore tailings as replacement for fine aggregate in concrete. Construction and Building Materials , Vol. 120(1), pp. 72-79.CrossRefGoogle Scholar
Michael, E., Skinner, W. & Clement, C. R. (1982) Mineralogical classification of southern African kimberlites. in Kimberlites, Diatremes, and Diamonds: Their Geology, Petrology, and Geochemistry (Eds Meyer, H. O. A. and Boyd, F. R.) , ISBN: 9780875902128.Google Scholar
Skinner, E. M. W. & Truswell, J. F. (2006) Kimberlites. The geology of South Africa , Johnson, M. R., Anheaeusser, C. R. and Thomas, R. J. (Editors), Geological Society of South Africa, Council of Geoscience, ISBN: 978-1-919908-77-9, pp. 651-659.Google Scholar
Field, M., Steifenhofer, J., Robey, J. & Kurszlaukis, S. (2008) Kimberlite-hosted diamond deposits of southern Africa: a review. Ore Geology Reviews , Vol. 34(1-2), pp. 33-75.CrossRefGoogle Scholar
Smith, C. B. (1983) Pb, Sr and Nd isotopic evidence for sources of southern african Cretaceous kimberlites. Nature , Vol. 304 , pp. 51-51.CrossRefGoogle Scholar
Skinner, E. M. W., Viljoen, K. S., Clark, T. C. & Smith, C. B. (1991) The petrography, tectonic setting and emplacement ages of the kimberlites in the south-western border region of the Kaapvaal Craton, Prieska area, RSA. 5th international kimberlite conference , Volume 1, Araxá, Brazil, pp. 373-375.Google Scholar
Verkhoturov, M. V., Amelin, S. A. & Konnova, N. I. R. (2009) Diamonds enrichment, Krasnoyarsk. pp. 207, cited by Alexakhin, VY, Bystritsky, VM, Zamyatin, NI & Zubarev, EV, et al. (2015) Detection of diamonds in kimberlite by the tagged neutron method. Nuclear instruments and methods in physics research Section A: accelerators, spectrometers, detectors and associated equipment, Vol. 785(11), pp. 9-13.Google Scholar
Swami, R. K., Pundhir, N. K. S. & Mathur, S. (2007) Kimberlite tailings - a road construction material. Journal of the Transportation Research Board , Vol. 2(1989), pp. 131-134.CrossRefGoogle Scholar
SANS-201 (2008) Sieve analysis fines, content and dust content of aggregates. South African Bureau of Standards - Standards Division, Pretoria, South Africa.Google Scholar
SANS-5862-1 (2006) Concrete tests - Consistence of freshly mixed concrete - slump test. Pretoria: South African Bureau of Standards.Google Scholar
SANS-5863 (1994) Concrete tests - compressive strength of hardened concrete, Pretoria: South African Bureau of Standards.Google Scholar
DI-Manual (2018) Durability index testing procedure manual, Version 4.5. www.theconcreteinstitute.org.za/durability ,43 pp.Google Scholar
Neville, A. M. (2011) Properties of Concrete (5th Edition). Pearson Education Limited, Edinburg Gate, Harlow, Essex CM20 2JE, England, ISBN: 978-0-273-75580-7.Google Scholar