The Influence of Calcium Aluminate Cement on Physical and Mechanical Properties of Waste Glass Powder Based Geopolymer Mortars Under Different Curing Conditions

Öz

In this study, the physical and mechanical properties of geopolymer mortars made with waste glass powder under different curing conditions have been investigated. For this purpose, eleven different geopolymer mortars containing waste glass powder and 5%, 10%, 15%, 20% and 25% calcium aluminate cement (Isıdaç40, and Refro50) were produced. Sodium silicate was used as activator in the mortars. The produced geopolymer mortars were subjected to two different curing conditions in an oven at 90° C for 24 hours and in the air for 24 hours + at 90 ° C for 24 hours in the oven. Flow table, water absorption and porosity, flexural strength, and compressive strength tests were performed on the mortars. The highest 7 and 28 days compressive strengths were obtained in mortars produced with 5% Isıdaç40 type cement in the air for 24 hours, respectively 24.2 MPa and 25.5 MPa.

Anahtar Kelimeler

• Waste glass powder
• Geopolymer
• Calcium aluminate cement
• Strength

Kalsiyum Alüminat Çimentosunun Farklı Kür Koşullarında Atık Cam Tozu Esaslı Geopolimer Harçların Fiziksel ve Mekanik Özelliklerine Etkisi

Öz

Bu çalışmada atık cam tozu ile üretilen geopolimer harçların fiziksel ve mekanik özelliklerine kalsiyum alüminat çimentosunun farklı kür koşullarında etkisi araştırılmıştır. Bu amaçla atık cam tozu ve %5, %10, %15, %20 ve %25 oranında kalsiyum alüminat çimentoları (Isıdaç40 ve Refro50) içeren onbir farklı karışıma sahip geopolimer harçlar üretilmiştir. Harçlarda aktivatör olarak sodyum silikat kullanılmıştır. Üretilen geopolimer harçlar 24 saat 90°C etüv ve 24 saat hava + 24 saat 90°C etüv olmak üzere 2 farklı küre tabi tutulmuştur. Harçlar üzerinde yayılma tablası, su emme-boşluk oranı, eğilme ve basınç dayanımı deneyleri gerçekleştirilmiştir. En yüksek 7 ve 28 günlük basınç dayanım değerleri hava+etüv küründe %5 Isıdaç40 tipi çimento ile üretilen harçlarda sırasıyla 24,2 MPa ve 25,5 MPa olarak elde edilmiştir.

Anahtar Kelimeler

• Atık cam tozu
• Geopolimer
• Kalsiyum alüminat çimentosu
• Dayanım

Kaynakça

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