Beton Üretiminin Karbondioksit Emisyonları Açısından Önemi: Toplumsal ve Çevresel Etkiler
Beton etkili sürdürülebilir kalkınmayı destekleyen güçlü çevresel faydalarından dolayı oldukça önem kazanmakta olan bir malzemedir. otoriteler, mühendisler ve tasarımcılar, artan çevresel ve ekonomik güçlere tepki olarak yenilenemez kaynakları koruyan verimli, yenilikçi somut çözümler arayışındadırlar. Bir yapı malzemesinin ömrü üzerindeki çevresel etkisini göz önünde bulundurunca birçok açıdan- üretim, inşaat, işletme, yıkım ve geri dönüşüm - beton en avantajlı seçenektir. Dünya çapında beton üretim atıklarına bir düzenleme getirilme ihtiyacı büyümekte olan bu çevresel ve ekonomik etkiler sonucu ortaya çıkmaktadır. Özellikle son yıllarda çimento imalat sürecinde yüksek enerji tüketimini ve çevresel etkileri önemli ölçüde azaltabilen bazı alternatiflere ulaşmak için araştırmacılar tarafından çeşitli çalışmalar yapıldığı bilinmektedir. Bu nedenle, geleneksel betonlara çevre dostu bir alternatif olarak "yeşil beton" kavramı ortaya çıkmaktadır. Bu yayın, betonun gelecek nesillerin sürdürülebilir kalkınmasına nasıl katkıda bulunduğunu ve mimar, mühendis, müteahhit ve müşterilerin yanı sıra binalarda ve altyapı tasarımında, inşasında veya işletmede yer alan diğer kişiler üzerindeki etkilerini de göstermeyi amaçlıyor. Betonun karbondioksit (CO2) emisyonuna katkıda bulunan asıl kaynakları belirlemek ve geleneksel betonları "yeşil betonlar" ile karşılaştırmak, harmanlanmış çimentolarla üretilen betonları ve çimentonun kısmen azaltılması için kullanılan uçucu külü kullanmak suretiyle beton üretiminin çevresel etkisini incelemek bu çalışmanın temel amaçlarıdır.
Significance of Concrete Production in Terms of Carbondioxide Emissions: Social and Environmental Impacts
Concrete is being recognized for its strong environmental benefits in support of creative and effective sustainable development. In response to growing environmental and economic forces, regulatories, engineers, developers and owners are seeking efficient, innovative concrete solutions that conserve non-renewable resources. When considering the lifetime environmental impact of a building material -extraction, production, construction, operation, demolition and recycling- concrete is the most advantageous choice to meet these goals. Global demands for regulating concrete production waste arise from the growth of these environmental and economic issues. Various efforts have been conducted by researchers to arrive at some alternatives that are able to significantly reduce high energy consumed and environmental impacts during fabrication process of cement. Therefore, the concept of "green concrete" as an environmentally friendly alternative to conventional concrete has been emerging. This publication seeks to demonstrate how concrete contributes to future generations’ sustainable development, and will be of interest to architects, engineers, policy makers, contractors and clients, as well as others involved with the design, construction or operation of buildings and infrastructure. The main objective of this study is to identify and evaluate the key sources contributing to CO2 emissions from concrete and compare traditional concretes with “green concretes”, concretes produced with blended cements and fly ash used as partial replacement of cement, in order to diminish the environmental impact of the concrete production.
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