>On 11/1/2013 6:24 PM, KM5VI wrote:
>Since then, the price of concrete has skyrocketed. While I haven't checked
>recently it was over 3 times what I paid and I have no reason to believe it
>dropped any. Steel has come down >some, but not a lot. Why concrete went so
>high I don't know.
Energy costs. Everything about concrete manufacturing consumes significant
amounts of energy. Mining the limestone, transportation, calcination (kiln
@1500C), grinding, more transportation, mining gravel and sand, yet more
transportation, raw material handling, mixing, and final transportation to the
job site.
Al
AB2ZY
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