Şinasi BİNGÖL, Cahit BİLİM, Cengiz ATİŞ, Uğur DURAK

Freeze-thaw resistance of blast furnace slag alkali activated mortars

In this study, blast furnace slag geopolymer mortars were prepared in prism molds with the size of 4 x 4 x 16 cm by alkali activating powdered sodium meta silicate (Na2SiO3). The mortar mixtures prepared to contain sodium in different proportions were cured with 3 different curing methods, and 300 cycles of freeze-thaw were applied, and strength and weight losses were examined. Control samples prepared with PC were also exposed to freeze-thaw cycles and the results were compared with each other. It was observed that 8% sodium added geopolymer mortars significantly preserved their compressive strength and weight. Especially, the compressive strength of the samples produced with 8% sodium and exposed to freeze-thaw cycle after 28 days of air curing increased by around 32%.

Keywords:

Blast Furnace Slag, Geopolymer mortars, Freeze-Thaw Cycle,

PDF

___

Atabey İ İ, Karahan O, Bilim C & Atiş C D (2020). The influence of activator type and quantity on the transport properties of class F fly ash geopolymer. Construction and Building Materials, 264. https://doi.org/10.1016/j.conbuildmat.2020.120268
Çelikten S, Sarıdemir M & Deneme İ Ö (2019). Mechanical and microstructural properties of alkali-activated slag and slag + fly ash mortars exposed to high temperature. Construction and Building Materials, 217, 50–61. https://doi.org/10.1016/j.conbuildmat.2019.05.055
Brooks R, Bahadory M, Tovia F & Rostami H (2010). Properties of alkali-activated fly ash: High performance to lightweight. International Journal of Sustainable Engineering, 3(3), 211–218. https://doi.org/10.1080/19397038.2010.487162
Fu Y, Cai L & Yonggen W (2011). Freeze-thaw cycle test and damage mechanics models of alkali-activated slag concrete. Construction and Building Materials, 25(7), 3144–3148. https://doi.org/10.1016/j.conbuildmat.2010.12.006
Juenger M C G, Winnefeld F, Provis J L & Ideker J H (2011). Advances in alternative cementitious binders. Cement and Concrete Research, 41(12), 1232–1243. https://doi.org/10.1016/j.cemconres.2010.11.012
Lämmlein T D, Messina F, Wyrzykowski M, Terrasi G P & Lura P (2019). Low clinker high performance concretes and their potential in CFRP-prestressed structural elements. Cement and Concrete Composites, 100(February), 130–138. https://doi.org/10.1016/j.cemconcomp.2019.02.014
Meyer C (2009). The greening of the concrete industry. Cement and Concrete Composites, 31(8), 601–605. https://doi.org/10.1016/j.cemconcomp.2008.12.010
Peng J X, Huang L, Zhao Y B, Chen P, Zeng, L & Zheng W (2012). Modeling of Carbon Dioxide Measurement on Cement Plants. Advanced Materials Research, 610–613, 2120–2128.
Sun P & Wu H C (2013). Chemical and freeze-thaw resistance of fly ash-based inorganic mortars. Fuel, 111, 740–745. https://doi.org/10.1016/j.fuel.2013.04.070
TS EN 1008. (2003). Mixing water for concrete—Specifications for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete. TSI.
TS EN 196-1. (2016). Methods of testing cement—part 1: determination of strength. TSI.
TS EN 197-1. (2012). Cement–Part 1: compositions and conformity criteria for common cements. In Turkish Standard Institution. TSI.
Xie N, Dang Y & Shi X (2019). New insights into how MgCl 2 deteriorates Portland cement concrete. Cement and Concrete Research, 120(April), 244–255. https://doi.org/10.1016/j.cemconres.2019.03.026
Yuan Y, Zhao R, Li R, Wang Y, Cheng Z, Li F & John M Z (2020). Frost resistance of fiber-reinforced blended slag and Class F fly ash-based geopolymer concrete under the coupling effect of freeze-thaw cycling and axial compressive loading. Construction and Building Materials, 250, 118831. https://doi.org/10.1016/j.conbuildmat.2020.118831
Zhang P, Gao Z, Wang J, Guo J, Hu S & Ling Y (2020). Properties of fresh and hardened fly ash/slag based geopolymer concrete: A review. In Journal of Cleaner Production (Vol. 270). Elsevier Ltd. https://doi.org/10.1016/j.jclepro.2020.122389
Zhang P, Zheng Y, Wang K & Zhang J (2018). A review on properties of fresh and hardened geopolymer mortar. Composites Part B: Engineering, 152(April), 79–95. https://doi.org/10.1016/j.compositesb.2018.06.031
Zhao R, Yuan Y, Cheng Z, Wen T, Li J, Li F & Ma Z J (2019). Freeze-thaw resistance of Class F fly ash-based geopolymer concrete. Construction and Building Materials, 222, 474–483. https://doi.org/10.1016/j.conbuildmat.2019.06.166
Zhuang X Y, Chen L, Komarneni S, Zhou C H, Tong D S, Yang H M, Yu W H & Wang H (2016). Fly ash-based geopolymer: Clean production, properties and applications. Journal of Cleaner Production, 125, 253–267. https://doi.org/10.1016/j.jclepro.2016.03.019