Browsing by Author "Beglarigale, Ahsanollah"
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Item Bazalt ve atık cam agregalı betonlarda alkali-silis reaksiyonu genleşmeleri ve alkali sızıntısı seviyeleri(Türk İnşaat Mühendisleri Odası, 2017-04) Yüksel, Cihat; Beglarigale, Ahsanollah; Yazıcı, Halit; Ramyar, Kambız; Andıç, Özge Çakır; Mardani, Ali Aghabaglou; Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü.; 0000-0003-0326-5015; AAJ-6415-2021; 57669486700Agregada bulunan amorf silis ve boşluk çözeltisindeki alkaliler arasında gerçekleşen alkalisilis reaksiyonu (ASR), hasarla sonuçlanan önemli durabilite sorunlarındandır. Bu çalışmada, çeşitli karışımların alkali-silis reaktiviteleri, RILEM komitesi tarafından geliştirilen AAR-3 ve AAR-4 deneyleriyle araştırılmıştır. Bu hızlandırılmış deneylerde numunelerde yer alan alkalilerin ne kadarının dışarıya sızdığını belirlemek için kapların alt kısmında yer alan sudan örnekler alınmış ve atomik absorpsiyon spektrometrisi ile sodyum ve potasyum iyonlarının konsantrasyonu belirlenmiştir. Sonuçlara göre alkalilerin önemli bir miktarının betonlardan dışarıya sızabildiği ve buna rağmen, özellikle atık cam agregası içeren karışımlarda halen çok yüksek miktarda genleşme ile karşılaşıldığı görülmüştür.Item Comparison of recycled glass and recycled concrete aggregates bearing mortar mixtures exposed to high temperature, abrasion and drying(Collage Puplishing, 2018) Beglarigale, Ahsanollah; Yazıcı, Halit; Ramyar, Kambiz; Mardani, Ali Aghabaglou; Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü.; 0000-0003-0326-5015; C-7860-2015; AAJ-6415-2021; 57669486700In this study, the effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on the drying-shrinkage, carbonation, high temperature and abrasion resistance of mortar mixtures were investigated comparatively. In addition, durability performance of the mortar mixtures was investigated through micro-structural analysis. For this purpose, 9 different mortar mixtures were prepared by replacing 25, 50, 75 and 100 wt.% of crushed-limestone fine aggregate with recycled glass and recycled concrete aggregates. Except for the abrasion resistance, the RG mixtures showed better durability performance than the control mixture. However, the RC mixtures containing more than 50% recycled aggregate showed lower performance than the control mixture.Item Microstructural analyses of recycled aggregate-bearing mortar mixture(Amer Concrete, 2016-01-11) Beglarigale, Ahsanollah; Yazıcı, Halit; Ramyar, Kambiz; Ağhabağlou, Ali Mardani; Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü.; 0000-0003-0326-5015; AAJ-6415-2021; 57669486700In this study, the effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on acid and sulfate resistance as well as alkali-silica reaction (ASR) expansion of mortar mixture were investigated comparatively. In addition, durability performance of mortar mixtures was supported by microstructural analysis. For this purpose, nine different mortar mixtures were prepared by replacing 25, 50, 75, and 100 wt% of crushed-limestone fine aggregate with recycled aggregates. Except for ASR and acid resistance, the sulfate resistance of mortar mixture improved by using RG aggregate. The performance of mortar in terms of ASR and acid sulfuric resistance increased by increasing RC aggregate replacement level. The ASR expansions in RG mixtures increased by increasing the RG aggregate content up to 100%. The RC mixtures containing more than 50% recycled aggregate, showed better performance than the control mixture in terms of sulfate resistance.Item Transport properties and freeze-thaw resistance of mortar mixtures containing recycled concrete and glass aggregates(Taylor & Francis, 2016-11-15) Beglarigale, Ahsanollah; Yazici, Halit; Ramyar, Kambiz; Mardani-Aghabaglou, Ali; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/İnşaat Mühendisliği Bölümü.; 0000-0003-0326-5015; AAJ-6415-2021; 57669486700The effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on the compressive strength, ultrasonic pulse velocity, dynamic elastic modulus, transport properties and freeze-thaw resistance of mortar mixture were investigated comparatively. Nine different mortar mixtures were prepared by partial replacement of crushed-limestone fine aggregate with recycled aggregates. Compared to that of the control mixture, the transport properties of RC aggregate-bearing mixtures inversely affected with increasing the replacement level of this aggregate. The opposite results were obtained in RG aggregate-containing mixtures. Frost resistance of mortar mixture improved by using both of the recycled aggregates. Improvement of frost resistance of RC mixtures was attributed to the presence of improved Interfacial transition zone between matrix and coarse aggregate (ITZ) in RC-bearing mixture and to the high number of pores existing in the well-distributed RC aggregates in the mixture. Perhaps, these pores provide additional sites for the water escaped from capillary pores upon ice formation.