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Educate myself? Like you are the ****ing authority on the subject. I do thank you for reading my post. You had to have read the entire post and understood it before you googled cement that would set underwater. You were lead to Wikipedia, where you read that Romans first pioneered the mass use of cement. Perhaps you even read the Encyclopedia Britanica entry on Hydraulic Cements. You were right about one thing, there are cements that will set underwater. So what I should have said, is there is no substance that, AFTER coming in contact with water, will set during the shourt course of a boxing match while constantly being compressed as a result of frequent punches.
But, it would seem that we BOTH need to educate ourselves. The Romans never had a cement that would set underwater. You merely saw that reference on the same page as the description of modern day cement. They used a combination of clay and volcano ash that, when mixed with water, would set once allowed to dry and "air out" as I originally stated.
Cement and plaster are two entirely different materials, composed of different substances. Plaster, alone, most definately does not set under water. It will attempt to harden, but becomes very brittle and immediately begins to disolve. A group of scientist and conservasionists were able to get plaster to set under water, but only after combining different epoxy compounds and after several attempts conducted in a labaratory (http://www.diveturkey.com/inaturkey/lab/peachey2.htm).
So, I admit, I was wrong. There are certain cement mixtures that will solidify if left untouched and un******ed, underwater. Plaster, mixed with slow-viscocity expoxies, will set in wet areas... and over a 24-48 hour period, will even set underwater, though it becomes extremely brittle and the process of disolving begins immediately.
But, it would seem that we BOTH need to educate ourselves. The Romans never had a cement that would set underwater. You merely saw that reference on the same page as the description of modern day cement. They used a combination of clay and volcano ash that, when mixed with water, would set once allowed to dry and "air out" as I originally stated.
Cement and plaster are two entirely different materials, composed of different substances. Plaster, alone, most definately does not set under water. It will attempt to harden, but becomes very brittle and immediately begins to disolve. A group of scientist and conservasionists were able to get plaster to set under water, but only after combining different epoxy compounds and after several attempts conducted in a labaratory (http://www.diveturkey.com/inaturkey/lab/peachey2.htm).
So, I admit, I was wrong. There are certain cement mixtures that will solidify if left untouched and un******ed, underwater. Plaster, mixed with slow-viscocity expoxies, will set in wet areas... and over a 24-48 hour period, will even set underwater, though it becomes extremely brittle and the process of disolving begins immediately.
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