Kendiliğinden Yerleşen Harçların Mekanik-Çevresel Sonuçlarının İncelenmesi ve Tepki Yüzeyi Metodu Tabanlı Modellenmesi

Abstract

Bu çalışma sürdürülebilir kalkınma ve döngüsel ekonomi perspektifinde atık malzemeler kullanılarak üretilen kendiliğinden yerleşen harçların meka-nik-çevresel sonuçlarının incelenmesine ve tepki yüzeyi metodu kullanılarak modellenmesine odaklanmaktadır. Çevresel çıktıları azaltabilmek ve meka-nik özellikleri iyileştirebilmek adına metakaolin ve yüksek fırın cürufu ek çimento esaslı malzeme olarak kullanılmış olup 10 farklı kendiliğinden yer-leşen harç serisi tasarlanmıştır. Mekanik özellikler için 90 günlük basınç dayanımı testi ve ultrases geçiş hızı ölçümleri dikkate alınmıştır. Tepki yüzeyi metodu kullanılarak basınç dayanımı ve ultrases geçiş hızına bağlı olarak matematiksel bir model geliştirilmiş, hesaplanan tüm bağıl hata oranları %5’in altında kalmıştır. Ardından çevresel etki kategorilerinden enerji tüke-timi sonuçları incelenmiş ve ek çimento esaslı malzeme kullanımının önemli azalmalara neden olduğu gözlenmiştir. Atık ve ek çimento esaslı malzeme kullanımının hem mekanik hem de çevresel özellikler üzerinde olumlu etkiler yarattığı tespit edilmiştir.

Keywords

• Kendiliğinden yerleşen harç
• Sürdürülebilirlik
• Atık yönetimi
• Tepki yüzeyi metodu

Investigation of mechanical-environmental outcomes of self-compacting mortars and modelling based on response surface method

Abstract

This study focuses on the investigation of the mechanical-environmental outcomes of self-compacting mortars produced using waste materials in the perspective of sustainable development and circular economy and modelling using the response surface method. In order to reduce environmental outputs and improve mechanical properties, metakaolin and blast furnace slag were used as supplementary ce-mentitious materials and 10 different self-compacting mortar series were designed. For mechanical properties, 90-day compressive strength test and ultrasonic pulse velocity measurements were taken into consideration. A mathematical model was developed using the response surface method based on compressive strength and ultrasonic pulse velocity, and all calculated absolute relative deviations remained below 5%. Then, energy consumption results from the environmental impact cat-egories were analyzed and it was observed that the use of supplementary ce-mentitious material caused significant reductions. It was determined that the use of waste and supplementary cementitious materials has positive effects on both mechanical and environmental properties.

Keywords

• Self-compacting mortar
• Sustainability
• Waste management
• Response Surface method

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