Effect of Different Mineral Admixtures on Sulfate Attack to Mortars

Abstract:

Corrosion resistance coefficient of mortars incorporating different mineral admixtures were tested according to GB2420, and the expansion ratio of mortar bar immersed in 5% Na2SO4 solution was measured according to ASTM C1012. It is shown that all the mineral admixtures, including ground granulated blast furnace slag (SL) fly ash (FA), natural zeolite (NZ) and metakaolin (MK) were effective in decreasing the 15-week expansion and increasing the corrosion resistance coefficient of the specimens immersed in Na2SO4 solution as well.

• Periodical: Key Engineering Materials (Volumes 405-406)
• Pages: 278-282
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.405-406.278
• Online since: January 2009
• Authors: Quan Lin Niu, Nai Qian Feng
• Keywords: Corrosion Resistance Coefficient, Expansion Ratio, Mass Loss, Mineral Admixture, Sulfate Attack

References

[1] Adam Neville, The confused world of sulfate attack on concrete, Cement and Concrete research, Vol. 34 (2004), pp.1275-1296.

DOI: 10.1016/j.cemconres.2004.04.004

[2] P.W. Brown, Thaumasite formation and other forms of sulfate attack, guest editorial, Cem. Concr. Compos. Vol. 24 (2002), pp.301-303.

DOI: 10.1016/s0958-9465(01)00081-6

[3] K. Torii, K. Taniguchi, M. Kawamura, Sulfate resistance of high fly ash content concrete. Cement and concrete research. Vol. 25 (1995), pp.759-768.

DOI: 10.1016/0008-8846(95)00066-l

[4] E.F. Irassar, A. Di Maio, O.R. Batic. Sulfate attack on concrete with mineral admixtures. Cement and concrete research, Vol. 26(1996), pp.113-123.

DOI: 10.1016/0008-8846(95)00195-6

[5] Karthik H. Obla, Russell L. Hill, Michael D. A Thomas, et al. properties of concrete containing ultrafine fly ash. ACI materials journal, Vol. 100 (2003), pp.426-433.

[6] R. Doug Hooton, John J. Emery. Sulfate resistance of a Canadian slag cement. ACI materials journal, Vol. 87(1990), p.547－555.

[7] Menashi D. Cohen, Arnon Bentur. Durability of Portland cement -silica fume paste in magnesium sulfate and sodium sulfate solution. ACI materials journal, Vol. 85(1988): pp.148-157.

DOI: 10.14359/1809

[8] J.M. Khatib, S. Wild. Sulfate resistance of metakaolin mortar. Cement and concrete research. Vol. 28(1998), pp.82-92.

DOI: 10.1016/s0008-8846(97)00210-x

[9] D.M. Roy, P. Arjunan, M.R. Silsbee. Effect of silica fume, metakaolin and low-calcium fly ash on chemical resistance of concrete, Cement and Concrete Research. Vol. 31 (2001), pp.1809-1813.

DOI: 10.1016/s0008-8846(01)00548-8

[10] Neville, Adam. The confused world of sulfate attack on concrete. Cement and Concrete Research. Volume 34 (2004), pp.1275-1296.

DOI: 10.1016/j.cemconres.2004.04.004

[11] S. Wild, J.M. Khatib. Portlandite consumption in metakaolin cement pastes and mortars. Cement and concrete research. Vol. 27(1997), pp.137-146.

DOI: 10.1016/s0008-8846(96)00187-1