Tasnif Edilmiş İnşaat Yıkıntı Atıklarından Elde Edilen Harman Tuğlası, Delikli Tuğla ve Çatı Kiremitinden Oluşan İkili Karışımların Geopolimer Hamur Üretiminde Değerlendirilmesi

Öz

Çimento endüstrisinin yüksek CO2 salımı, enerji ve doğal kaynak tüketimi gibi sebeplerden dolayı araştırmacılar alternatif bağlayıcı malzeme arayışına girmişlerdir. Alkali-aktive malzemeler ve geopolimer bu alternatif bağlayıcı malzemeler içerisinde son zamanlarda oldukça popülerdir. Söz konusu çalışma kapsamında tasnif edilmiş inşaat yıkıntı atıkları (İYA) 10 ve 15 M NaOH çözeltileri ile aktive edilerek geopolimer hamurlar üretilmiştir. Aktive edilen inşaat yıkıntı atıkları çatı kiremiti, delikli ve harman tuğlanın ayrı ayrı %75 ya da %25 oranlarında kullanıldığı ikili karışımlardır. İkili karışımlarla elde edilecek iyi sonuçlar hem üçlü karışımların kullanımını cesaretlendirecek hem de yıkıntı atıklarının, içerisindeki malzeme oranlarına göre optimum aktivatör ve kür koşullarıyla, tasnif edilmesine gerek kalmadan karışık şekilde kullanımının önünü açacaktır. Hamurların 24, 48 ve 72 saat süreyle 95, 105, 115 ve 125 oC sıcaklıklarda kür edildiği bu çalışmada, en yüksek basınç dayanım değeri 83,1 MPa değeriyle 72 saat 115 oC’de kür edilen %75 delikli tuğla ve %25 harman tuğlasından oluşan numuneden elde edilmiştir.

Anahtar Kelimeler

• Alkali-aktive malzemeler
• Geopolimer
• İnşaat yıkıntı atıkları
• Yüksek sıcaklık kürü
• NaOH

Assessment of Clay Brick, Hollow Brick and Roof Tile Provided from Assorted Construction and Demolition Waste in Geopolymerization

Öz

Researchers are in search of a new binding material because of the high CO2 emissions and consuming natural resources of cement industry. Alkali-activated materials and geopolymer are very popular recently. In this study, assorted construction and demolition wastes (CDW) were activated with 10 and 15 M NaOH solutions. CDW were used as binary combinations of roof tile, hollow brick and clay brick with percentages of 25% and 75% separately. Thus, both triple mix designs would be possible and not assorted CDW will be able to used through their own optimum activator and curing conditions. Specimens were cured at 95, 105, 115, 125 oC for 24, 48, 72 h and maximum compressive strength result was obtained by alkali-activation of 75% hollow brick and 25% clay brick mix cured at 115 oC for 72 h.

Anahtar Kelimeler

• Alkali-activated materials
• Geopolymer
• Construction and demolition waste
• High temperature curing
• NaOH

Kaynakça

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