Cover Image

Performance of mortars incorporating fly ash, silica fume, blast furnace slag at different temperature in magnesium sulfate solution

İlker Ustabaş, Şakir Erdoğdu


This study presents the performance of five different mortars at room temperature, 40oC and 5oC in magnesium sulfate solution. Two groups of mortars are prepared of only cement but vary in ratio water/ cement (W/C) (0,52 and 0,625). The other three groups of mortars produced incorporating fly ash (FA), silica fume (SF) and blast furnace slag (BFS). These mortars were immersed for 600 days in magnesium sulfate solution. All mortars measured compressive strength, flexural strength during the 600 days. Water absorption and sorption of mortars were determined at 28 days. Microstructures of mortars were studied by scanning electron microscope (SEM) and microscope. Chemical analyzes were done with X-ray diffraction (XRF). Mortars sulfate attack affected mineral additives but cement prevent the mortars better than these with mineral additives. Mortars water absorption and sorption are important parameters on sulfate attack. Mortars corrupt at room temperature more than the other mediums.

Full Text:



Skalny, J., Marchand, J., Odler, I., Sulfate Attack on Concrete, Spon Press, New York, 2002.

Santhanam,M., Cohen,M.D., Olek,J., Mechanism of sulfate attack: a fresh look part 2. Proposed mechanisms, Cement and Concrete Research, 33 (2003) 341-346

Abd El Aziz, M., Abd El Aleem, S., Heikal, M., Didamony, H., Hydration and Durability of Sulphate-Resisting and Slag Cement Blends in Caron’s Lake Water, Cement and Concrete Research, 35 (2005) 1592-1600.

Al-Amoudi, O.S.B., Attack on Plain and Blended Cement Exposed to Aggressive Sulfate Environments, Cement & Concrete Composites, 24 (2002) 305-316.

Irassar, E.F., Gonzalez, M., Rahhal, V., Sulfate Resistance of Type V Cement with Limestone Filler and Natural Puzzolana , Cement & Concrete Composites, 22 (2000) 361-368.

Nehdi,M., Hayek, M., Behavior of Blended Cement Mortars Exposed to Sulfate Solutions Cycling in Relative Humidity, Cement and Concrete Research, (2005) 735-742.

Santhanam,M., Cohen,M.D., Olek,J., Effect of Gypsum Formation on the Performance of Cement Mortars During External Sulfate Attack, Cement and Concrete Research, 32 (2003) 325-332.

Türker, F., Akos, F., Koral, S., Yüzer,N., Effect of magnesium sulfate Concentration on Sulfate resistance of Mortars With and Without Silica Fume, Cement and Concrete Research, (1997) 205-214.

Lee,S.T., Moon, H.Y., Swamy, R.N., sulfate attack role of silica fume in resisting strength loss, Cement & Concrete Composites, 27 (2005) 65-75

Akoz, F., Turker,F., Koral S, yuzer, N., effect of sodium sulfate concentration on the sulfate resistance of mortars with and without silica fume, Cement and Concrete Research, 25, (1995), 1360-1368.

Thomas, M.D.A., Shehata, M.H., Shashiprakash, S.G., Hopkins, D.S., Cail, K., Use of Ternary Cementations Systems Containing Silica Fume and Fly Ash in Concrete, Cement and Concrete Research, 29 (1999) 1207-1214.

Cavdar, A., Yelgin, Ş., Investigation of mechanical and mineralogical properties of mortars subjected to sulfate, Construction and building Materials, 24,(2010),2231-2242

Brown, P., Hooton, R.D., Ettringite and Thaumasite Formation in Laboratory Concretes Prepared Using Sulfate-resisting Cements, Cement & Concrete Composites, 24, 2002, 361-370.

Rasheeduzzafar, A., Abduljauwad, S.N., Maslehuddin, M., Mechanism of Magnesium-Sodium Sulfate Attack in Plain and Blended Cements, ASCE Mater Civil Engineering, (1994) 201-222.

Memon, A.H., Radin, S.S., Zain, M.F.M, Trottier, J., Effect of mineral and chemical admixtures on high-strength concrete in seawater, Cement and Concrete Research, 32, (2002),373-377

Crammond, N.J., The Thaumasite Form of Sulfate Attack in the UK, Cement & Concrete Composites, 25 (2003) 809-818.

Li, G., Zhao, X, properties of concrete incorporating fly ash and ground granulated blast- furnace slag, Cement & Concrete Composites, 25 (2003) 293-299.

Copyright (c) 2016 Turkish Journal of Materials

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