Fly Ash in Sustainable Concrete
In my last blog I spoke about the Green Building scenario in India. While writing, I came across a construction practice which involved the use of Fly Ash in Concrete. In this blog I will talk more about some of the benefits of replacing cement by fly ash in concrete. Some of the primary reasons why fly ash is used are the cost benefits, performance and its growing contribution to sustainable construction. Basically fly ash is nothing but waste product that comes from coal fired plants. On an average over a 100-110 million tons of fly ash is produced annually. This waste is not at all treated properly and rather dumped without paying much attention to it. This has resulted to some severe consequences . Instead of simply letting fly ash harm the environment, it can be put to use in mixing concrete by replacing Portland cement by fly ash. Costs were one of the vital factors the use of fly ash started over 30 years ago. Fly ash definitely is a lot cheaper than cement an...