Fresh and mechanical properties of self compacting concrete containing copper slag as fine aggregates

Rahul Sharma, Rizwan A Khan

Abstract


An investigation is carried out on the development of Self Compacting Concrete (SCC) using copper slag (CS) as fine aggregates with partial and full replacement of sand. Six different SCC mixes (60% OPC and 40% Fly Ash) with 0% as control mix, 20%, 40%, 60%, 80% and 100% of copper slag substituting sand with constant w/b ratio of 0.45 were cast and tested for fresh properties of SCC. Compressive strength and splitting tensile strength were evaluated at different ages and microstructural analysis was observed at 120 days. It has been observed that the fluidity of SCC mixes was significantly enhanced with the increment of copper slag. The test results showed that the compressive strength increases up to 60% copper slag as replacement of sand, beyond which decrease in strength was observed. The highest compressive strength was obtained at 20% copper slag substitution at different curing ages among all the mixes, except for 7 days curing. The splitting tensile strength of the CS substituted mixes in comparison to control concrete was found to increase at all the curing ages but the remarkable achievement of strength was detected at 60% copper slag replacement. The microscopic view from Scanning electron microscopy (SEM) demonstrated more voids, capillary channels, and micro cracks with the increment of copper slag as substitution of sand as compared to the control mix.

Keywords


Self Compacting Concrete; Copper Slag; Sand; Fresh properties; Mechanical properties; Microstructural analysis

Full Text:

PDF

References


- A. Beycioglu, H.Y. Aruntas, Workability and mechanical properties of self-compacting concretes containing LLFA, GBFS and MC. Constr. Build. Mater. 73 (2014) 626–635. doi:10.1016/j.conbuildmat.2014.09.071.

- E.G. Badogiannis, I.P. Sfikas, D. V. Voukia, K.G. Trezos, S.G. Tsivilis, Durability of metakaolin Self-Compacting Concrete. Constr. Build. Mater. 82 (2015) 133–141. doi:10.1016/j.conbuildmat.2015.02.023.

- E. Güneyisi, M. Gesoglu, A. Al-Goody, S. İpek, Fresh and rheological behavior of nano-silica and fly ash blended self-compacting concrete. Constr. Build. Mater. 95 (2015) 29–44. doi:10.1016/j.conbuildmat.2015.07.142.

- M. Jalal, A. Pouladkhan, O.F. Harandi, D. Jafari, Comparative study on effects of Class F fly ash, nano silica and silica fume on properties of high performance self compacting concrete. Constr. Build. Mater. 94 (2015) 90–104. doi:10.1016/j.conbuildmat.2015.07.001.

- Freedonia, World construction aggregates, Industry Study No. 2838. The Freedonia Group, Cleveland, Ohio, USA, 2012.

- C. Shi, C. Meyer, A. Behnood, Utilization of copper slag in cement and concrete. Resour. Conserv. Recycl. 52 (2008) 1115–1120. doi:10.1016/j.resconrec.2008.06.008

- B. Gorai, R.K. Jana, Premchand, Characteristics and utilisation of copper slag - A review. Resour. Conserv. Recycl. 39 (2003) 299–313. doi:10.1016/S0921-3449(02)00171-4

- ICSG, The world copper factbook 2015, in: International Copper Study Group, Lisbon, Portugal, 2015, pp. 1- 64.

- K.S. Al-Jabri, M. Hisada, S.K. Al-Oraimi, A.H. Al-Saidy, Copper slag as sand replacement for high performance concrete. Cem. Concr. Compos. 31 (2009) 483–488. doi:10.1016/j.cemconcomp.2009.04.007

- M. Khanzadi, A. Behnood, Mechanical properties of high-strength concrete incorporating copper slag as coarse aggregate. Constr. Build. Mater. 23 (2009) 2183–2188. doi:10.1016/j.conbuildmat.2008.12.005

- W. Wu, W. Zhang, G. Ma, Optimum content of copper slag as a fine aggregate in high strength concrete. Mater. Des. 31 (2010) 2878–2883. doi:10.1016/j.matdes.2009.12.037

- C.Q. Lye, S.-K. Koh, R. Mangabhai, R.K. Dhir, Use of copper slag and washed copper slag as sand in concrete: a state-of-the-art review. Mag. Concr. Res. 67 (2015) 665–679. doi:10.1680/macr.14.00214.

- K.S. Al-Jabri, R.A. Taha, A. Al-Hashmi, A.S. Al-Harthy, Effect of copper slag and cement by-pass dust addition on mechanical properties of concrete. Constr. Build. Mater. 20 (2006) 322–331. doi:10.1016/j.conbuildmat.2005.01.020

- W. Wu, W. Zhang, G. Ma, Mechanical properties of copper slag reinforced concrete under dynamic compression. Constr. Build. Mater. 24 (2010) 910–917. doi:10.1016/j.conbuildmat.2009.12.001

- W.A. Moura, J.P. Gonçalves, M.B.L. Lima, Copper slag waste as a supplementary cementing material to concrete. J. Mater. Sci. 42 (2007) 2226–2230. doi:10.1007/s10853-006-0997-4.

- M. Najimi, R. Pourkhorshidi, Properties of concrete containing copper slag waste. Mag. Concr. Res. 63 (2011) 605–615. doi:10.1680/macr.2011.63.8.605

- O. Onuaguluchi, O. Eren, Durability-related properties of mortar and concrete containing copper tailings as a cement replacement material. Mag. Concr. Res. 64 (2012) 1015-1023. doi:10.1680/macr.11.00170

- K.S. Al-Jabri, A.H. Al-Saidy, R. Taha, Effect of copper slag as a fine aggregate on the properties of cement mortars and concrete. Constr. Build. Mater. 25 (2011) 933–938. doi:10.1016/j.conbuildmat.2010.06.090

- B.M. Mithun, M.C. Narasimhan, Performance of alkali activated slag concrete mixes incorporating copper slag as fine aggregate. J. Clean. Prod. 112(2016) 837–844. doi:10.1016/j.jclepro.2015.06.026.

- IS 8112, 43 Grade Ordinary Portland Ceemnt- Specification. Bureau of Indian Standards, New Delhi, 1989.

- ASTM, C618-05 Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete., 2005. doi:10.1520/C0618-15.2.

- IS 383, Specification for coarse and fine aggregates from natural sources for concrete. Bureau of Indian Standards, New Delhi, 1970.

- IS 9103, Concrete Admixtures-Specification. Bureau of Indian Standards, New Delhi, 1999.

- EFNARC, The European Guidelines for Self-Compacting Concrete Specification, Production and Use, 2005.

- IS 516, Methods of tests for strength of concrete, Bureau of Indian Standards, New Delhi, 1959.

- IS 5816, Splitting tensile strength of concrete-methods of test, Bureau of Indian Standards, New Delhi, 1999.

- M.F.M. Zain, M.N. Islam, S.S. Radin, S.G. Yap, Cement-based solidification for the safe disposal of blasted copper slag. Cem. Concr. Compos. 26 (2004) 845–851. doi:10.1016/j.cemconcomp.2003.08.002


Refbacks

  • There are currently no refbacks.




Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

ISSN 2170-127X

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at http://revue.ummto.dz.