BUHAR KÜRÜNÜN UÇUCU KÜLLÜ KENDİLİĞİNDEN YERLEŞEN BETONLARIN KISA VE UZUN SÜRELİ BASINÇ DAYANIMINA ETKİSİ

Bu çalışmada buhar kürünün farklı dozajlarda uçucu küllü kendiliğinden yerleşen betonların kısa ve uzun süreli basınç dayanımı üzerine etkisi araştırılmıştır. Bu amaçla çimento ağırlığının %0, %20, %30, %40 ve %50’ si oranında uçucu kül ikame edilen 500 kg/m3, 550 kg/m3 ve 600 kg/m3 dozajlı kendiliğinden yerleşen betonların buhar kürü sonrası 1 gün, 28 gün ve 180 günlük basınç dayanımları standart kür gören betonlarla karşılaştırılmıştır. Buhar kürünün 1 günde sağladığı dayanım kazancı uçucu kül ikame oranı arttıkça artarak %24-93 arasında olmuştur. 28 günlük basınç dayanım oranları ise uçucu kül ikame oranı arttıkça artmış, buhar kürü etkisiyle oluşan dayanım kayıpları %13 ile %6 arasında değişmiştir. İleri yaşta ise uçucu kül ikame oranı arttıkça buhar kürlü ve standart kürlü dayanımlar arasındaki fark büyümüştür.

Anahtar Kelimeler:

Buhar Kürü, Kendiliğinden Yerleşen Beton, Uçucu Kül, Basınç Dayanımı

EFFECT OF STEAM CURING ON SHORT AND LONG-TERM COMPRESSIVE STRENGTH OF SELF-COMPACTING CONCRETE WITH FLY ASH

In this study, the effect of steam curing on the short and long-term compressive strength of self-compacting concrete containing fly ash was investigated. For this purpose, steam curing was applied to self-compacting concrete with dosages of 500 kg/m3, 550 kg/m3 and 600 kg/m3 in which fly ash was substituted at ratios of 0%, 20%, 30%, 40% and 50% of the cement weight and 1 day, 28-day and 180-day compressive strengths were compared with standard cured concrete. The strength gain of steam cured concrete in 1 day increased as the fly ash replacement ratio increased in level of 24-93%. The ratio of 1-day steam-cured concrete strengths to the 28-day compressive strength increased as the fly ash replacement ratio increased, and strength losses due to steam curing varied between 13% and 6%. In later ages, the difference between steam cured and standard cured strengths increased as the fly ash replacement ratio increased.

Keywords:

Steam Curing, Self-Compacting Concrete, Fly Ash, Compressive Strength,

PDF

___

Ardahanlı, M , Oltulu, M , Alameri, I . (2021). Uçucu Küllü Kendiliğinden Yerleşen Betonun Özellikleri Üzerine Ön Isıtmanın Etkisi . Black Sea Journal of Engineering and Science, 4(3), 81-88.
Berry, E. E., and Malhotra, V. M. (1980). Fly ash for use in concrete-a critical review. ACI Journal, Proceedings, 77(2), 59-73.
Bingöl, A.F. and Tohumcu, İ. (2013). Effects of different curing regimes on the compressive strength properties of self compacting concrete incorporating fly ash and silica füme. Materials & Design, 51, 12-18.
Bosiljkov, V.B., Duh, D. and Zarnic, R. (2010). Time evolution of properties of SCC mixtures produced using crushed limestone aggregate and high content of limestone filler, design, production and placement of self-consolidating concrete. Rilem Bookseries,1, 317–27.
Calvo, J.L.G., Alonso, M.C., Luco, L.F. and Velasco, M.R. (2016). Durability performance of sustainable self compacting concretes in precast products due to heat curing, Construction and Building Materials, 111, 379-385.
Cengiz, S. , Kamanlı, M. & Ünal, A. (2020). Investıgatıon of flexural behavıor of reınforced concrete beams produced wıth self compactıng and normal concrete . Mühendislik Bilimleri ve Tasarım Dergisi , 8 (2) , 429-438 .
Derabla, R. and Benmalek, M.L. (2014). Characterization of heat-treated self-compacting concrete containing mineral admixtures at early age and in the long term. Construction and Building Materials, 66, 787–794.
Efnarc. (2002). Specification and Guidelines for Self Compacting Concrete, Association House, 99 West Street, Farnham, Surrey GU9 7EN, UK, ISBN 0953973344, 32 p.
Felekoglu B. (2007). Utilisation of high volumes of limestone quarry wastes in concrete industry (self-compacting concrete case). Resour Conserv Recycl, 51, 770–91.
Fraay, A.L.A., Bijen, J.M. and Haan, Y.M. (1989). The reaction of fly ash in concrete a critical examination. Cement and Concrete Research, 19(2), 235-246.
Higginson, E. C. (1961). Effect of Steam Curing on the Important Properties of Concrete. JACI, Vol. 58, No. 3, 1961, pp. 281- 298.
Hwang, S.D., Khatib, R., Lee, H.K. and Khayat, K. (2012). Optimization of steam-curing regime for high-strength, self-consolidating concrete for precast, prestressed concrete applications. PCI J, 57, 48-61.
Liu, B., Xie, Y. and Li, J. (2005). Influence of steam curing on the compressive strength of concrete containing supplementary cementing materials. Cement and Concrete Research, 35(5), 994-998.
Maltais, Y. and Marchand, J. (1997). Influence of curıng temperature on cement hydratıon and mechanıcal strength development of fly ash mortars, Cement and Concrete Research, 27(7),1009-1020.
Öztekin, E., (1983). Beton sertleşmesinin hızlandırılmasında kullanılan ısıl işlemler- eğilme dayanımına etkileri, Karadeniz Üniversitesi,Trabzon.
Ramezanianpour, A.A., Khazali, M.H. and Vosoughi,P. (2013). Effect of steam curing cycles on strength and durability of SCC: A case study in precast concret., Construction and Building Materials, 49, 807-813.
Ramezanianpour, A.M., Esmaeili, Kh, Ghahari, S.A. and Ramezanianpour, A.A. (2014). Influence of initial steam curing and different types of mineral additives on mechanical and durability properties of self-compacting concrete. Constr. Build. Mater., (73), 187–194 (2014).
Reinhardt, H.W. and Stegmaier, M. (2006). Influence of heat curing on the pore structure and compressive strength of self-compacting concrete (SCC), Cement and Concrete Research, 36(5), 879-885,
Richardson, I.G. (2004). Tobermorite/jenniteand tobermorite/calcium hydroxide-based models for the structure of C–S–H: applicability to hardened pastes of tricalcium silicate, b-dicalcium silicate, Portland cement, and blends of Portland cement with blast-furnace slag, metakaolin, or silica fume. Cem Concr Res., 34(9), 1733–77.
Shi, J., Liu, B., Wu, X., Qin, J., Jiang, J. And He, Z. (2020). Evolution of mechanical properties and permeability of concrete during steam curing process. Journal of Building Engineering, 32, 101796.
Taşdemir, C. (2003). Combined effects of mineral admixtures and curing conditions on the sorptivity coefficient of concrete. Cem Concr Res, 33(10), 1637-1642.
Tuyan, M . (2019). Atık Tuğla Tozunun Mineral Katkı Olarak Kullanımının Kendiliğinden Yerleşen Betonun Taze Hal, Mekanik ve Durabilite Özelliklerine Etkisi . Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi , 23 (2) , 540-548.
Türkel, S. and Alabaş, V. ( 2005 ). The effect of excessive steam curing on portland composite cement concrete, Cem Concr Res , 35(2), 405 – 411.
Uysal, M. and Mansur, S. (2011). Performance of self-compacting concrete containing different mineral admixtures. Constr Build Mater, 25, 4112–20.
Uysal, M. and Yilmaz, K. (2011). Effect of mineral admixtures on properties of selfcompacting concrete. Cement Concr Comp, 33, 771–6.
Vejmelkova, E., Keppert, M., Grzeszczyk, S., Bartłomiej, S. and Cerny, R. (2011) Properties of self-compacting concrete mixtures containing metakaolin and blast furnace slag. Constr Build Mater, 25, 1325–31.
Yazıcı, H., Aydın, S., Yiğite,r H. and Baradan, B. (2005). Effect of steam curing on class C high-volume fly ash concrete mixtures. Cem Concr Res , 35(6), 1122–1127.
Yazıcı, Ş., Arel, H.Ş., (2016). The ınfluence of steam curing on early-age compressive strength of pozzolanic mortars. Arab J Sci Eng, 41, 1413–1420.
Zhimin, H., Junzhe, L. and Kangwu, Z. (2012). Influence of mineral admixtures on the short and long-term performance of steam-cured concrete. Energy Procedia, 16, Part B, 836-841.