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http://dx.doi.org/10.12989/cac.2017.19.2.153

The strength properties of alkali-activated silica fume mortars  

Saridemir, Mustafa (Department of Civil Engineering, Engineering Faculty, Omer Halisdemir University)
Celikten, Serhat (Department of Civil Engineering, Engineering Faculty, Omer Halisdemir University)
Publication Information
Computers and Concrete / v.19, no.2, 2017 , pp. 153-159 More about this Journal
Abstract
In this study, the strength properties of alkali-activated silica fume (SF) mortars were investigated. The crushed limestone sand with maximum size of 0-5 mm and the sodium meta silicate ($Na_2SiO_3$) used to activate the binders were kept constant in the mortar mixtures. The mortar specimens using the replacement ratios of 0, 25, 50, 75 and 100% SF by weight of cement together with $Na_2SiO_3$ at a constant rate were produced in addition to the control mortar produced by only cement. Moreover, the mortar specimens using the replacement ratio of 4% titanium dioxide ($TiO_2$) by weight of cement in the same mixture proportions were produced. The prismatic specimens produced from eleven different mixtures were de-moulded after a day, and the wet or dry cure was applied on the produced specimens at laboratory condition until the specimens were used for flexural strength ($f_{fs}$) and compressive strength ($f_c$) measurement at the ages of 7, 28 and 56 days. The $f_{fs}$ and $f_c$ values of mortars applied the wet or dry cure were compared with the results of control mortar. The findings revealed that the $f_c$ results of the alkali activated 50% SF mortars were higher than that of mortar produced with Portland cement only. It was found that the $f_{fs}$ and $f_c$ of alkali-activated SF mortars cured in dry condition was averagely 4% lower than that of alkali-activated SF mortars cured in wet condition.
Keywords
silica fume; alkali activator; mortar; flexural strength; compressive strength;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 ASTM C 494-99a (2002), Standard Specification for Chemical Admixtures for Concrete, Annual Book of ASTM Standards.
2 Atis, C.D., Bilim, C., Celik, O. and Karahan, O. (2009), "Influence of activator on the strength and drying shrinkage of alkaliactivated slag mortar", Constr. Build. Mater., 23(1), 548-555.   DOI
3 Bakharev, T., Sanjayan, J.G. and Cheng, Y.B. (1999), "Alkali activation of Australian slag cements", Cement Concrete Res., 29(1), 113-120.   DOI
4 Bakharev, T., Sanjayan, J.G. and Cheng, Y.B. (2002), "Sulfate attack on alkali-activated slag concrete", Cement Concrete Res., 32(2), 211-216.   DOI
5 Bakharev, T., Sanjayan, J.G. and Cheng, Y.B. (2003), "Resistance of alkali-activated slag concrete to acid attack", Cement Concrete Res., 33(10), 1607-1611.   DOI
6 Bayasi, Z. and Zhou, J. (1993), "Properties of silica fume concrete and mortar", ACI Mater. J., 90(4), 349-356.
7 Bernal, S., Gutierrez, R.D., Silvio, D. and Rodriguez, E. (2011), "Effect of binder content on the performance of alkali-activated slag concretes", Cement Concrete Res., 41(1), 1-8.   DOI
8 Chindaprasirt, P., Chareerat, T. and Sirivivatnanon, V. (2007), "Workability and strength of coarse high calcium fly ash geopolymer", Cement Concrete Compos., 29(3), 224-229.   DOI
9 Collins, F.G. and Sanjayan, J.G. (1999), "Workability and mechanical properties of alkali activated slag concrete", Cement Concrete Res., 29(3), 455-458.   DOI
10 El-didamony, H., Amer, A.A. and Ela-ziz, H.A. (2012), "Properties and durability of alkali-activated slag pastes immersed in sea water", Ceram., 38(5), 3773-3780.   DOI
11 Erdogan, T.Y. (2003), "Concrete", Metu Press, Ankara, Turkey, 741.
12 Fernandez-jimenez, A. and Palomo, J.G. (2005), "Composition and microstructure of alkali activated fly ash binder: Effect of the activator", Cement Concrete Res., 35(10), 1984-1992.   DOI
13 Hardjito, D., Wallah, S.E., Sumajouw, D.M.J. and Rangan, B.V. (2004), "On the development of fly ash-based geopolymer concrete", ACI Mater. J., 101(6), 467-472.
14 Fernandez-Jimenez, A., Palomo, J.G. and Puertas, F. (1999), "Alkali-activated slag mortars-mechanical strength behavior", Cement Concrete Res., 29(8), 1313-1321.   DOI
15 Guo, X., Shi, Hu., Chen, L. and Dick, W.A. (2010), "Alkaliactivated complex binders from class C fly ash and cacontaining admixtures", J. Hazard. Mater., 173(1), 480-486.   DOI
16 Han, S.H., Kim, J.K. and Park, Y.D. (2003), "Prediction of compressive strength of fly ash concrete by new apparent activation energy function", Cement Concrete Res., 33(7), 965-971.   DOI
17 Ilter, E. (2007), "Efficiency of silica fume in the high dosage concretes with CEM I 42,5 cement", M.S. Thesis Dissertation, Istanbul Technical University, Istanbul, Turkey.
18 Krizan, D. and Zivanovic, B. (2002), "Effects of dosage and modulus of water glass on early hydration of alkali-slag cements", Cement Concrete Res., 32(8), 1181-1188.   DOI
19 Jayanthi, S.J. and Kowsik, R. (2016), "Assessment of strength and durability of bagasse ash and silica fume concrete", Comput. Concrete, 17(6), 801-814.   DOI
20 Khalifeh, M., Saasen, A., Vralstad, T. and Hodne, H. (2014), "Potential utilization of class C fly ash-based geopolymer in oil well cementing operations", Cement Concrete Compos., 53, 10-17.   DOI
21 Mazloom, M., Ramezanianpour, A.A. and Brooks, J.J. (2004), "Effect of silica fume on mechanical properties of high-strength concrete", Cement Concrete Compos., 26(4), 347-357,   DOI
22 Oh, J.E., Monteiro, P.J.M., Jun, S.S., Choi, S. and Clark, S.M. (2010), "The evolution of strength and crystalline phases for alkali-activated ground blast furnace slag and fly ash-based geopolymers", Cement Concrete Res., 40(2), 189-196.   DOI
23 Roy, D.M., Jiang, W. and Silsbee, M.R. (2000), "Chloride diffusion in ordinary, blended, and alkali-activated cement pastes and its relation to other properties", Cement Concrete Res., 30(12), 1879-1884.   DOI
24 Pacheco-Torgal, F., Castro-Gomes, J. and Jalali, S. (2008), "Alkali activated binders: A review. Part II: About materials and binder manufacture", Constr. Build. Mater., 22(7), 1305-1314.   DOI
25 Pilvar, A., Ramezanianpour, A.A., Rajaie, H. and Karein, S.M.M. (2016), "Practical evaluation of rapid tests for assessing the chloride resistance of concretes containing silica fume", Comput. Concrete, 18(6), 793-806.   DOI
26 Puertas, F., Amat, T., Fernandez-jimenez, A. and Vazquez, T. (2003), "Mechanical and durable behaviour of alkaline cement mortars reinforced with polypropylene fibres", Cement Concrete Res., 33(12), 2031-2036.   DOI
27 Toutanji, H., Delatte, N., Aggoun, S., Duval, R. and Danson, A. (2004), "Effect of supplementary cementitious materials on the compressive strength and durability of short-term cured concrete", Cement Concrete Res., 34(2), 311-319.   DOI
28 Serdar, A. (2013), "A ternary optimisation of mineral additives of alkali activated cement mortars", Constr. Build. Mater., 43, 131-138.   DOI
29 Shi, C., Krivenko, P.V. and Roy, D. (2006), Alkali-Activated Cements and Concretes, Taylor and Francis, U.S.A. and Canada.
30 Shi, C. and Xie, P. (1998), "Interface between cement paste and quartz sand in alkali activated slag mortars", Cement Concrete Res., 28(6), 887-896.   DOI
31 TS 802 (2009), Design of Concrete Mixes, Ankara, Turkey.
32 TS EN 1015-11/A1 (2013), Methods of Test for Mortar for Masonry-Part 11: Determination of Flexural and Compressive Strength of Hardened Mortar, Ankara, Turkey.
33 TS EN 197-1 (2012), Cement-Part 1: Compositions and Conformity Criteria for Common Cements, Ankara, Turkey.
34 Zivica, V. (2007), "Effects of type and dosage of alkaline activator and temperature on the properties of alkali-activated slag mixtures", Constr. Build. Mater., 21(7), 1463-1469.   DOI
35 TS EN 934-2+A1 (2013), Admixtures for Concrete, Mortar and Grout-Part 2: Concrete Admixtures-Definitions, Requirements, Conformity, Marking and Labelling, Ankara, Turkey.
36 Wang, S.D., Pu, X.C., Scrivener, K.L. and Pratt, P.L. (1995), "Alkali activated slag cement and concrete: A review of properties and problems", Adv. Cem. Res., 7(27), 93-102.   DOI
37 Yang, K.H. and Song, J.K. (2009), "Workability loss and compressive strength development of cementless mortars activated by combination of sodium silicate and sodium hydroxide", J. Mater. Civil Eng., 21(3), 119-127.   DOI