[TowerTalk] FW: concrete

[Al Kozakiewicz]

>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