A STUDY ON THE EFFECTS OF HEAVY METAL AVAILABLE IN CEMENT AND FLY ASH ON HYDRATION AND ENVIRONMENTAL HEALTH

Öz

Cement is the most commonly used calcium-based binding agent in concrete production. Moreover, industrial wastes such as fly ash, blast-furnace slag, silica fume, etc. are gradually replacing the use of cement for concrete. Today, the use of industrial waste such as fly ash in the concrete and cement industry reduces the environmental problems. However, cement and fly ash includes heavy metals such as Pb, Cu, Sn, Cr, As, Mo, V, Co and Cd which can be a threat to human health. Heavy metal exposure lead to DNA damage, chromosome disorders, skin lesions, and permanent damage in respiratory system and nervous system. On the other hand, aforementioned heavy metals are chemically bound to hydration products such as C-S-H, CH, ettringite, monosulfate, etc. Therefore, it is possible to eliminate the industrial waste such as fly ash which is harmful to both humans and ecosystem. 

Anahtar Kelimeler

• Heavy Metal,Fly Ash,Environmental Health,Cement,Hydration

ÇİMENTO VE UÇUCU KÜL BÜNYESİNDEKİ AĞIR METALLERİN ETKİLERİNİN HİDRATASYON VE ÇEVRE SAĞLIĞI AÇISINDAN İNCELENMESİ

Öz

Çimento, beton üretimi içine kullanılan kalsiyum esaslı bağlayıcıların başında gelmektedir. Ayrıca uçucu kül, yüksek fırın cürufu, silis dumanı gibi endüstriyel atıkların çimento yerine kullanımı da her geçen gün artmaktadır. Günümüzde uçucu kül gibi endüstriyel atıkların beton ve çimento sektöründe kullanılması ile çevresel problemler azaltılmaktadır. Ancak çimento ve uçucu kül bünyesinde Pb, Cu, Sn, Cr, As, Mo, V, Co ve Cd gibi insan sağlığı açısından zararlı olan ağır metaller bulunmaktadır. Ağır metaller, DNA parçalanması, kromozom bozuklukları, cilt lezyonları, solunum ve sinir siteminde kalıcı hasarlara yol açmaktadır. Fakat belirtilen ağır metaller C-S-H, CH, etrenjit, monosülfat gibi hidratasyon ürünleri tarafından bağlanmaktadır. Bu sayede insan ve ekosistem için zararlı olan uçucu kül gibi endüstriyel atıklar bertaraf edilmektedir. 

Anahtar Kelimeler

• Ağır Metal,Uçucu Kül,Çevre Sağlığı,Çimento,Hidratasyon

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