Investigation of mechanical and microstructural performance of alkali activated electrical arc furnace slag mortars
The production of Portland cement, resulting in the release of CO2 gas, excessive energy and natural resource consumption, has led to search for alternative materials with similar physical and mechanical properties to the Portland cement of the scientific community. Geopolymers as alternative to conventional cement have a great potential for use in terms of their mechanical and durability properties. For this reason, it is necessary to investigate the usability of a new material alternative to cement, to reduce the environmental impact and for the disposal of Electric Arc Furnace Slag (EAFS), which is produced in large quantities in the primary target world and in Turkey and which causes storage space bottleneck. For this purpose, the mechanical and microstructure of the activated EAFS exposed to different curing conditions at three different sodium concentrations with a silicate module was investigated. When the results are examined, it is obvious that the strength increases with the increase of the sodium concentration. In addition, the literature on which alkali activation of EAFS has been added for the first time.
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- 1. Scrivener, K.L. and A. Nonat, Hydration of cementitious materials, present and future. Cement and concrete research, 2011. 41(7): p. 651-665.
- 2. Rostami, M. and K. Behfarnia, The effect of silica fume on durability of alkali activated slag concrete. Construction and Building Materials, 2017. 134: p. 262-268.
- 3. Duxson, P., et al., The role of inorganic polymer technology in the development of ‘green concrete’. Cement and Concrete Research, 2007. 37(12): p. 1590-1597.
- 4. Douglas, E. and Brandstetr, J., A preliminary study on the alkali activation of ground granulated blast-furnace slag. Cement and Concrete Research, 1990. 20(5): p. 746-756.
- 5. Brough, A. R., and Atkinson, A., Sodium silicate-based, alkali-activated slag mortars: Part I. Strength, hydration and microstructure. Cement and Concrete Research, 2002, 32(6): p. 865-879.
- 6. Ozturk, M., Bankır, M. B., Bolukbası, O. S., and Sevım, U.K. Alkali Activation of Electric Arc Furnace Slag: Mechanical Properties and Micro Analyzes. Journal of Building Engineering, in press, 2018.
- 7. Chi, M., Effects of dosage of alkali-activated solution and curing conditions on the properties and durability of alkali-activated slag concrete. Construction and Building Materials, 2012, 35, p. 240-245.
- 8. Oh, J. E., Monteiro, P. J., Jun, S. S., Choi, S. and Clark, S. M. The evolution of strength and crystalline phases for alkali-activated ground blast furnace slag and fly ash-based geopolymers. Cement and Concrete Research,2010,40(2):p.189-196.
- Yayın Aralığı: Yılda 3 Sayı
- Başlangıç: 2017
- Yayıncı: Dr. Ceyhun YILMAZ
Sayıdaki Diğer Makaleler
Mahmut KAHRAMAN, Ferhat PAKDAMAR
Efe ŞAFAK, Beyza KARA, Gülce MÜLAYİM, Ceren SERT, Nazlıcan ULU, Kemal Göktuğ EKEN, Gülsemin SAVAŞ TUNA, Sercen Cansu SERTEL
Hanifi ÇINARLIDERE, Belgin COŞGE ŞENKAL
Umur Korkut SEVİM, Murat ÖZTÜRK, Müzeyyen BALÇIKANLI BANKİR, Ömer Saltuk BÖLÜKBAŞI
Rizvan İMAMOĞLU, İsa GÖKÇE, Bahadır ATAMAN, Duygu DÜZGÜN, Hülya KUDUĞ