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ASR Resistance of Ternary Cementitious Systems Containing Silica Fume-Fly Ash Using Modified ASTM C 1260 Method

  • Published : 2003.06.01

Abstract

Supplementary cementitious materials (SCM) such as fly ash, ground granulated blast furnace slag and silica fume are now being extensively used in concrete to control expansion due to alkali-silica reactivity (ASR). However, the replacement level of a single SCM needed to deleterious ASR expansion and cracking may create other problem and concerns. For example, incorporating silica fume at levels greater than 10% by mass of cement may lead to dispersion and workability concerns, while fly ash can lead to poor strength development at early age, The combination of silica fume and fly ash in ternary cementitious system may alleviate this and other concerns, and result in a number of synergistic effects. The aim of the study was to enable evaluation of more realistic suitability of a silica fume-fly ash combination system for ASR resistance based on an in-house modification of ASTM C 1260 test method. The modification can be more closely identified with actual field conditions. In this study three different strengths of NaOH test solution(1N, 0.5N, and 0.25N) were used to measure the expansion characteristics of mortar bar made with a reactive aggregate. The other variable included longer testing period of 28 days instead of a conventional 14 days.

Keywords

References

  1. Stanton, T.E, 'Expansion of Concrete Through Reaction between Cement and Aggregate,' Proceedings of the Ameri-can Society of Civil Engineers, Vol. 66, 1940, pp. 1781-1811
  2. Thomas, M.D.A., 'Review of the Effect of FIy Ash and Stag on Alkali-Aggregate Reaction in Concrete' Building Re-search Establishment Report BR 314, Construction Re-search Communications, Ltd., Watford, UK, 1996, PP.117
  3. Ramachandran, V.S., 'Alkali-Aggregate Exapnsion inhibit-ing Admixtures,' Cement and Concrete Composites, Vol. 20, 1998,pp.149-161 https://doi.org/10.1016/S0958-9465(97)00072-3
  4. Xu, Z., Hooton, R.D., 'Migration of Alkali lons in Mortar Due to Several Mechanisms,' Cement Concrete Research, Vol.23, 1993,pp.951-961 https://doi.org/10.1016/0008-8846(93)90049-F
  5. Thomas, M.D.A., Hooton, R.D., and Rogers, C., 'Preven-tion of Damage Due to Alkali-aggregate Reactions (AAR) in Concrete Construction-Canadian Approach,' Cement Concrete and Aggregate, Vol. 19, 1997, pp.26-30 https://doi.org/10.1520/CCA10018J
  6. Roger, C.A. and Hooton, R.D., 'Reduction in Mortar and Concrete Expansion with Reactive Aggregates Due to Leaching,' Cement Concrete and Aggregate, Vol. 13, 1991, pp.42-49 https://doi.org/10.1520/CCA10548J
  7. Baalbaki, M, Sarkar, S.L., Aitcin, P.C., and Isabelle, H., 'Proper-ties and microstmcture of high-performance Concretes Contain-ing Silica fume, Slag, and Fly,' Proceeding of 4th International Conference on Silica Fume, Slag, Fly Ash, and Natural Poz-zolans in Concrete, Istanbul, 1992, pp.921-935
  8. Borsoi, A., Collepardi, S., Coppola, L., Troli, R., and Collepandi, M., 'Strength and Durability of High Perform-ance Concrete with Pozzolanic and Composite Cement,' Proceeding of 5th International Conference on Durability of Concrete, 2000, pp.159-172
  9. Li, D., Shen, J., Chen, Y., Cheng, L., and Wu, X., 'Study of Properties on Fly Ash-Slag Complex Cement,' Cement and Concrete Research, Vol.30, 2000, pp.1381-1387 https://doi.org/10.1016/S0008-8846(00)00360-4
  10. Shon, C.-S., Zollinger, D.G., and Sarkar, S.L., 'Evaluation of Modified ASTM C 1260 Accelerated Mortar Bar Test for Alkali-Silica Reactivity,' Cement and Concrete Research, Vol.32,2002,pp.1981-1987 https://doi.org/10.1016/S0008-8846(02)00903-1
  11. Malhotra, V.M. and Mehta, P.K., 'Pozzolanic and Cementi-tious Materials,' Gordon and Breach Publishers, Amster-dam, 1996
  12. Shon, C. S., Kang, S. G., and Kim, Y. S., 'ASR Effective-ness of High Volume Fly Ash Cementitious Systems Using modified ASTM C 1260 Test Method,' KCI Concrete Jour-nal, Vo1. 14,2002,PP.81-85
  13. Shon, C. S., Zollinger, D. G., and Sarkar, S. L., 'Testing the Effectiveness of Class C and Class F Fly Ash in Controlling Expansion Due to Alkali-Silica Reaction Using Modified ASTM C 1260 Test Method,' ASCE Journal of Materiats in CiviI Engineering, in Press
  14. Hobbs, D.W, 'Alkali-Silica Reaction in Concrete,' Thomas Telford, London, 1988, pp.103-133

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