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Microstructure and Strength Properties of Alkali-activated Binder mixed with Sea Water
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 Title & Authors
Microstructure and Strength Properties of Alkali-activated Binder mixed with Sea Water
Jun, Yubin; Oh, Jae-Eun;
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This paper presents an investigation of the mechanical and microstructural properties on hardened samples that were synthesized using blended binder(fly ash(FA) and blast furnace slag cement(BFSC)), alkali activator and sea water or distilled water. Binders were prepared by mixing the FA and BFSC in different blend weight ratios of 6:4, 7:3 and 8:2. Sodium hydroxide and sodium silicate were used 5 wt% of binder, respectively, as an alkaline activator. The compressive strength and absorption were measured at the age of 3, 7 and 28 days, and the XRD, TGA and MIP tests were performed at the age of 28 days. An increase in the content of BFSC leads to an increase in the quantities of ettringite and C-S-H formed, regardless of the type of mixing water. And it also shows higher strength due to the reduction of pores larger than ~50 nm. All hardened samples in this study have common hydration products of C-S-H, and calcite. Hydrocalumite of all reaction products formed was only present in hardened sample mixed with sea water. For each FA/BFSC mixing ratio, the compressive strength of hardened sample mixed with sea water was similar to that mixed with distilled water. It is proposed that the slight increase of strength of samples mixed with sea water is mainly due to the presence of hydrocalumite phase containing chlorine ion, contributing to the change of total porosity and pore size distribution in samples.
fly ash;blast furnace slag cement;alkali activation;sea water;hydrocalumite;
 Cited by
Lee, Y.S., Jang, J.G., Saito, T., and Otsuki, N., "Possibility of sea water as a greener material in concrete", Proceedings of the Korea Concrete Institute, Vol.23, No.2, 2011, pp. 767-768.

Kaushik, S.K., and Islam, S., "Suitability of sea water for mixing structural concrete exposed to a marine environment", Cement & Concrete Composites, Vol.17, 1995, pp.177-185. crossref(new window)

Lee, H.J., "Seawater in the mixture", Magazine of the Korea Concrete Institute, Vol.13, No.3, 2001, pp.92-96.

Abrams, D.A., "Tests of impure waters for mixing concrete", ACI Journal Proceedings, Vol.20, No.2, pp.442-486.

Wegian, F.M., "Effect of seawater for mixing and curing on structural concrete", The IES Journal Part A: Civil & Structural Engineering, Vol.3, No.4, 2010, pp.235-243. crossref(new window)

El-Didamony, H., Amer, A.A., and Ela-ziz, H.A., "Properties and durability of alkali-activated slag pastes immersed in sea water", Ceramics International, Vol.38, 2012, pp.3773-3780. crossref(new window)

Moon, H.Y., "Blast-furnace slag cement", Magazine of the Korea Concrete Institute, Vol.3, No.1, 1991, pp.18-23.

KS L 5210, Portland blast-furnace slag cement, 2013.

Kim, M.S., Jun, Y., Lee, C., and Oh, J.E., "Use of CaO as an activator for producing a price-competitive non-cement structural binder using ground granulated blast furnace slag", Cement and Concrete Research, Vol.54, 2013, pp.208-214. crossref(new window)

Zhang, J., and Scherer, G.W., "Comparison of methods for arresting hydration of cement", Cement and Concrete Research, Vol.41, 2011, pp.1024-1036. crossref(new window)

Puertas, F., Martinez-Ramirez, S., Alonso, S., and Vazquez, T., "Alkali-activated fly ash/slag cement strength behaviour and hydration products", Cement and Concrete Research, Vol.30, 2000, pp.1625-1632. crossref(new window)

Palomo, A., Grutzeck, M.W., and Blanco, M.T., "Alkali-activated fly ashes: a cement for the future", Cement and Concrete Research, Vol.29, 1999, pp.1323-1329. crossref(new window)

Zhu, H., Zhang, Z., Zhu, Y., and Tian, L., Jun, Y., "Durability of alkali-activated fly ash concrete: Chloride penetration in pastes and mortars", Construction and Builiding Materials, Vol.64, 2014, pp.51-59.

Yang, T., Yao, X., and Zhang, Z., "Quantification of chloride diffusion in fly ash-slag-based geopolymers by X-ray fluorescence(XRF)", Construction and Building Materials, Vol.69, 2014, pp.109-115. crossref(new window)

Ismail, I., Bernal, S.A., Provis, J.L., San Nicolas, R., Brice, D.G., Kilcullen, A.R., Hamdan, S., and Van Deventer, J.S. J., "Influence of fly ash on the water and chloride permeability of alkali-activated slag mortars and concretes", Construction and Building Materials, Vol.48, 2013, pp.1187-1201. crossref(new window)

Grishchenko, R.O., Emelina, A.L., and Makarov, P.Y., "Thermodynamic properties and thermal behavoir of Friedel's salt", Thermochimica Acta, Vol.570, 2013, pp.74-79. crossref(new window)

Tatematsu, H., Nakamura, T., Koshimizu, H., Morishita, T., and Kotaki, H., "Cement-additive for inhibiting concrete-deterioration", Patent US5435846 A, 1995.

Kim, J.Y., and Kim, W.K., "Durability of epoxy-modified mortars containing nitrite-type hydrocalumite", Proceedings of the Korea Concrete Institute, Vol.25, No.2, 2013, pp.215-216.

Paat, A., and Traksmaa, R., "Investigation of mineral composition of oil shale ash stored in ash fields of the balti power plant", Oil Shale, Vol.22, No.3, 2005, pp.445-451.

Palmer, S.J., Smith, M.K., and Frost, R.L., "The effect of high concentrations of calcium hydroxide in neutralised synthetic supernatant liquor-Implications for alumina refinery residues", Journal of Industrial and Engineering Chemistry, Vol.17, 2011, pp.56-61. crossref(new window)

Hashem, F.S., Amin, M.S., and El-Gamal, S.M.A., "Improvement of acid resistance of Portland cement pastes using rice husk ash and cement kiln dust as additives", Journal of thermal analysis and calorimetry, Vol.111, 2013, pp.1391-1398. crossref(new window)

Bakolas, A., Aggelakopoulou, E., Moropoulou, A., and Anagnostopoulou, S., "Evaluation of pozzolanic activity and physicomechanical characteristics in metakaolin-lime pastes", Journal of Thermal Analysis and Calorimetry, Vol.84, 2006, pp.157-163. crossref(new window)

Sha, W., and Pereira, G.B., "Differential scanning calorimetry study of hydrated ground granulated blast-furnace slag", Cement and Concrete Research, Vol.31, 2001, pp.327-329. crossref(new window)

Sha, W., "Differential scanning calorimetry study of the hydration products in Portland cement pastes with metakaolin replacement", Proceedings of the International Conference on Advances in Building Technology, Vols.I, II, 2002, pp. 881-888.

Orsini, P.G., Buri, A., and Marotta, A., "Devitrification of glasses in the akermanite-gehlenite system", Journal of the American Ceramic Society, Vol.58, 1975, pp.306-311. crossref(new window)

Yu, Q.L., and Brouwers, H.J.H., "Gypsum: an investigation of microstructure and mechanical properties", Proceedings 8th fib International PhD Symposium in Civil Engineering, 2010, pp.20-23.

Vassileva, C.G., and Vassilev, S.V., "Behaviour of inorganic matter during heating of Bulgarian coals: 1. Lignites", Fuel Processing Technology, Vol.86, 2005, pp.1297-1333. crossref(new window)

Bakolas, A., Aggelakopoulou, E., Moropoulou, A., and Anagnostopoulou, S., "Evaluation of pozzolanic activity and physicomechanical characteristics in metakaolin-lime pastes", Journal of Thermal Analysis and Calorimetry, Vol.84, No.1, 2006, pp.157-163. crossref(new window)

Park, H., Jeong, Y., Jun, Y., Jeong J.H., and Oh, J.E., "Strength enhancement mechanism in clinker-free CaO-GGBFS system by addition of gypsum", Proceedings of the Korea Concrete Institute, Vol.27, No.1, 2015, pp.497-498.

Rattanasak, U., Pankhet, K., and Chindaprasirt, P., "Effect of chemical admixtures on properties of high-calcium fly ash geopolymer", International Journal of Minerals, Metallurgy, and Materials, Vol.18, No.3, 2011, pp.364-369. crossref(new window)

Pane, I., and Hansen, W., "Investigation of blended cement hydration by isothermal calorimetry and thermal analysis", Cement and Concrete Research, Vol.35, 2005, pp.1155-1164. crossref(new window)

Jeong, Y., Park, H., Jun, Y., Jeong, J.H., and Oh, J.E., "Microstructural verification of the strength performance of ternary blended cement systems with high volumes of fly ash and GGBFS", Construction and Building Materials, Vol.95, 2015, pp.96-107. crossref(new window)

Provis, J.L., Myers, R.J., White, C.E., Rose, V., and Van Deventer, J.S.J., "X-ray microtomography shows pore sturcture and tortuosity in alkali-activated binders", Cement and Concrete Research, Vol.42, 2012, pp.855-864. crossref(new window)

Mehta, P.K., and Monteiro, P.J.M., Concrete: microstructure, properties, and materials: McGraw-Hill New York, 2006.

Jun, Y., and Oh, J.E., "Use of gypsum as a preventive measure for strength deterioration during curing in Class F fly ash geopolymer system", Materials, Vol.8, 2015, pp. 3053-3067. crossref(new window)