Eco-Efficient Concrete Using Industrial Wastes: A Review

摘要

Concrete is one of the most widely used construction materials in the world.However,the production of Portland cement as the essential constituent of concrete requires a considerable energy level.Also releases a significant amount of chemical carbon dioxide emissions and other greenhouse gases (GHGs) into the atmosphere.Global demand will increase almost 200 % by 2050 from 2010 levels.Thus,seeking an eco-efficient and sustainable concrete may be one of the main roles that the construction industry should play in sustainable construction.Portland cement can be partially replaced by cementitious and pozzolanic materials,especially those of industry by-products such as fly ash,GGBS,silica fume,ceramic waste powder and metamorphic rock dust from stone cutting industry.The aggregates are also conserved by replacing them with recycled or waste materials (among which recycled concrete),ceramic waste,post-consumer glass,and recycled tires.All of the previous alternatives are,currently,the most used.This paper summarizes current knowledge about eco-efficient concrete,by reviewing previously published work.