Uçucu Kül Yerine Kullanılan Atık Cam Tozunun Kendiliğinden Yerleşen Betonların Taze, Mekanik ve Durabilite Özellikleri Üzerine Etkisi

Bu çalışmada, uçucu kül (UK) yerine atık cam tozu (ACT) kullanılarak kendiliğinden yerleşen beton (KYB) üretilmiş ve ACT’nin KYB üzerindeki etkileri araştırılmıştır. KYB’ler, 550 kg/m3 bağlayıcı içeriğinin yanı sıra 0,32 su/bağlayıcı oranıyla ve 700±10 mm sabit bir yayılma çapıyla üretilmiştir. Öncelikle, ACT kullanılmaksızın çimento ve UK ile kontrol karışımı üretilmiş, sonrasında UK yerine ACT %5, %10, %15 ve %20 oranlarında kullanılarak diğer 4 karışım tasarlanmıştır. KYB’lerin taze özelliklerini belirlemek amacıyla yayılma tablasında yayılma çapı ve T500(mm) slump yayılma süresi, V hunisinde boşalma süresi ve L kutusunda yükseklik oranı deneyleri yapılmıştır. Sertleşmiş halde ise KYB’lerin mekanik özelliklerini tespit etmek için basınç, yarmada çekme ve eğilme deneyleri, durabilite özelliklerini belirlemek amacıyla kılcal su geçirimliliği ve hızlı klor geçirimliliği deneyleri yapılmıştır. Sonuçlara göre ACT, KYB’lerin yayılma çapı ve L kutusu yükseklik oranı değerlerini azaltırken, T500(mm) slump yayılma süresi ve V hunisi boşalma süresi değerlerini artırmıştır. Ayrıca, UK yerine kullanılan ACT miktarı arttıkça KYB’nin mekanik ve durabilite özellikleri iyileşmiştir.

The Effect of Waste Glass Powder using Instead of Fly Ash on the Fresh, Mechanical and Durability Properties of Self Compacting Concretes

In this study, self-compacting concrete (SCC) was produced by using waste glass powder (WGP) instead of fly ash (FA) and the effects of WGP on SCC were investigated. SCCs were produced with 0.32 water/binder ratio and a constant slump diameter of 700 ± 10 mm as well as 550 kg/m3 binder content. Firstly, the control mixture with cement and FA was produced without WGP, then, other four mixtures were designed using WGP in the ratios of 5%, 10%, 15% and 20% instead of FA. Slump diameter and T500(mm) slump flow time in slump table, discharge time in V-funnel and height ratio in L-box tests were performed in order to determine the fresh properties of the SCCs. In the hardened state, compressive, splitting tensile and flexural tests in order to indentify the mechanical properties of SCCs, water sorptivity and rapid chloride permeability tests in order to determine durability properties were performed. According to the results, while WGP decreased values of slump diameter and L-box height ratio of SCCs, values of T500(mm) slump flow time and V-funnel discharge time were increased. In addition, as the amount of WGP used in place of the UK increased, the mechanical and durability properties of SCC improved.

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