zirkon wrote:This seems to be a much over looked topic.
First the characteristics of porland cement:
-Cement is the essential ingrediant for concrete
-To create the special abilities of portland cement we need temperatures of up to ~1480°C.
-The average amount of energy needed to create 1 gramm of portland cement is at least 1700 Joule.
-The world production of cement in 2002 was 1,800 million metric tons.
A quick calculation to find out how much energy was needed to create that much cement would be nice:
1,800,000,000,000,000 Gramm cement
times
1700 Joule
equals
3.06 Million Terra Joule = 3.06*10x18 Joule
I guess ...
1 Joule is the same as one Watt of thermic energy
so we are talking about 3.06 Billion Giga Watt of thermic energy...
hotsacks wrote:Every construction product I can think of has rocketed up in price over the last year.Every one except for portland cement.
Anyone know why?
hotsacks wrote:Every construction product I can think of has rocketed up in price over the last year.Every one except for portland cement.
Anyone know why?
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Tanada wrote:
Partly cause it rocketed up first and everything else is just catching up, and partly because the cement production plants around here have converted to using scrap automotive tires as their primary fuel source, something they get free or cheap from people who need to dispose of them, like high volume tire retailers.
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