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How Does Concrete Get Hard

Here is one set of info on doing it http://www.ehow.com/how_4523674_make-con… Concrete forms do need supporting stakes and boards to hold their sides and keep them from collapsing ...
http://uk.answers.yahoo.com/question/index?qid=200...
It wouldn't if you'd quite sticking your thing in it.
http://uk.answers.yahoo.com/question/index?qid=201...
Instead of cutting and pasting from Wiki (without quoting my source), I will just give you the link and you can read the full article yourself. It's good stuff. Really, who would s...
http://uk.answers.yahoo.com/question/index?qid=200...
Concrete ( a mixture of sand, gravel, cement and water) 'sets' by way of a chemical reaction between the cement and the water (hydration), making it go hard and bonding the sand an...
http://uk.answers.yahoo.com/question/index?qid=200...
It's ment to be hard hence the name (concrete pudding) when we had this at school. the best way to eat it was without custard just pick it up, and bite wasn't any good trying to ea...
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Useful sites about:

How Does Concrete Get Hard

Concrete: Scientific Principles
Soft, porous aggregates can result in weak concrete with low wear resistance, while using hard aggregates can make strong concrete with a high resistance to ...
matse1.matse.illinois.edu
How does concrete become really hard and save energy? - BASF.com
Everybody is familiar with the 400 meter warm-up lap around the sports field after which many people are really quite out of breath. Another 141 meters, and this ...
www.basf.com
Concrete FAQs - Salmon Bay Sand and Gravel
Question: How long does it take for concrete to get hard? Answer: Concrete will take an initial set in generally 2-3 hours depending upon the air temperature, ...
www.sbsg.com
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