Yeşil Mutabakatı Destekleyen Sürdürülebilir Çimento Esaslı Kompozitlerin Agresif Ortam ve Karbonatlaşma Direnci

Year 2022, Volume: 5 Issue: 2, 943 - 957, 18.07.2022

Müzeyyen Balçıkanlı Bankir

https://doi.org/10.47495/okufbed.1012497

Abstract

Çalışma kapsamında sürdürülebilir ve yeşil mutabakatı destekleyen çimento esaslı kompozitlerin mekanik ve durabilite performanslarını değerlendirmek için Granüle Yüksek Fırın Cürufu (GYFC), Uçucu Kül (UK) ve Silis Dumanı (SD)’nın tekli, ikili ve üçlü kompozisyonlarının çimento ile ağırlıkça %15, %30 ve %45 oranında ikame edilmesi ile sekiz farklı beton üretilmiştir. Numunelerin 28 ve 90 günlük dört noktadan eğilme dayanımı ve basınç dayanımının yanı sıra 30 gün boyunca %5 konsantrasyonda hazırlanan sülfürik asit ve sodyum sülfat içeren ortamlara maruz kalan betonların performans değerlendirilmesi ağırlık ve dayanım değişimleri dikkate alınarak belirlenmiştir. Çimento miktarının %30 azaltılması ile üretilen kompozit numuneler kontrol numunesine göre daha üstün mekanik ve durabilite özelliği sergilemiştir. Laboratuvar ortamında bekletilen numunelerin 60 ve 120 günlük karbonatlaşma derinlikleri (KD) de ölçülmüş ve KD’yi sınırlayan en ideal kompozisyon %15 GYFC+ %15 UK’dir.

Keywords

Sürdürülebilir üretim, Yeşil Mutabakat, mineral katkı, asit ve sülfat direnci, karbonatlaşma

Aggressive Environment and Carbonation Resistance of Sustainable Cement-Based Composites Supporting the Green Deal

Abstract

Within the scope of the study, in order to evaluate the mechanical and durability performances of cement-based composites that support sustainable production and green deal, single, double and triple compositions of Granulated Blast Furnace Slag (GYFC), Fly Ash (UK) and Silica Fume (SD) were replaced with cement 15%, 30% and 45% by weight and so eight different concretes were produced. In addition to the four point flexural and compressive strength of the samples at 28 and 90 days, the concretes were exposed to sulfuric acid and sodium sulfate solutions prepared at 5% concentration for 30 days. Performance evaluation was made by considering weight and strength changes. Concrete samples produced by reducing the amount of cement by 30% showed superior mechanical and durability properties compared to the control sample. Carbonation depths (KD) of 60 and 120 days samples, kept in the laboratory, were measured and the ideal composition limiting the KD was 15% GYFC + 15% UK.

Keywords

Sustainable production, Green deal, Mineral additive, Acid and sulfate resistance, Carbonation

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