Milestone: Foundation poured!
October 9, 2009
After clearing, grading and site preparation, our foundation is finally poured today!
We are using 30% fly ash concrete mix which is considered to be more environmentally friendly. Why? It is because fly ash is a residue from coal combustion; by using fly ash in our cement mix, we are actually converting waste into useful material. In fact, research has shown that by adding a controlled amount of fly ash, the strength of the concrete mix can be improved.
That sounds pretty good, doesn’t it? Well, the flip side of that is that with the higher content of fly ash, the concrete does take longer to cure (which means taking longer for your construction project to complete), so it is still not a very common practice for most constructions to be using such a high content of fly ash yet.
“LEED for Homes” green certification program recognizes the sustainability aspects of adding 30% fly ash to concrete foundation mix – you can earn points towards the certification.
Filed under: green certification, green features, project milestones
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