Deniz dibi tarama malzemesi, kömür uçucu külü ve atık döküm kumunun hafif agrega olarak geri kazanımı

Yıl 2019, Cilt: 34 Sayı: 3, 1377 - 1394, 29.05.2019

Pembe Özer Erdoğan Hatice Merve Başar

https://doi.org/10.17341/gazimmfd.460534

Cited By: 1

Öz

Günümüzde, yüksek miktardaki deniz dibi tarama malzemesinin (DTM) diğer endüstriyel atıklarla birlikte sürdürülebilir çevresel yönetimi Türkiye genelinde ortak bir sorundur. DTM ve atıkların denize boşaltım/bertaraf yerine yapay hafif (kaba) agrega (YHA) üretiminde hammadde olarak faydalı kullanımı/geri kazanımı, döngüsel ekonomi kapsamında önemli çevresel kazanç sağlayacaktır. Bu çalışmada, DTM, kömür uçucu külü ve atık döküm kumu kullanılarak YHA üretimi araştırılmıştır. Hammaddelerin üç farklı karışımı pelletleme diskinde granüle edilmiş, 105ºC’de kurutulmuş ve kül fırınında 1100, 1150, 1170, 1180 ve 1190°C’de 5-10°C/min ısıtma hızı ve 10-20 min sinterleme süresinde sinterlenmiştir. Sinterlenen YHA’lar fiziksel, mekanik, mikroyapısal, mineralojik ve sızma özellikleri açısından analiz edilmiştir. 1190°C sinterleme sıcaklığı, 5°C/min ısıtma hızı ve 20 min sinterleme süresinde üretilen YHA’lar daha iyi agrega özelliklerine neden olmuştur. Ayrıca, bu agregaların sızma (liç) testi sonuçlarına göre; eluat ve original atık parametrelerinin, sinterleme prosesinde silika matriksine hapsolması nedeni ile, III. Sınıf (İnert Atık) düzenli depolama tesisi limit değerlerinin altında olduğu; böylece, yapı sektöründe kullanım için çevresel risk teşkil etmediği görülmüştür.  

Anahtar Kelimeler

Faydalı kullanım, hafif agrega; dip tarama malzemesi; uçucu kül; atık döküm kumu

Kaynakça

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