Altairion
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Originally posted by hung_big+Apr 5 2005, 10:06 PM--><div class='quotetop'>QUOTE(hung_big @ Apr 5 2005, 10:06 PM)</div><div class='quotemain'><!--QuoteBegin-Altairion@Apr 4 2005, 11:42 PM
and also to have a concrete that has a density that is lighter than water so it can float, but still be strong enough to hold four people while they race in it.
[post=297138]Quoted post[/post]
Bri - is that physically possible? Water's density is 1lb/square cm (if I'm not mistaken). Now to make a concrete mix I assume you need partial water, but are not all sand and sand-products denser (sp?) than water? So if you combine the two, logic tells that it would be denser than H2O.
And if that is untrue, what is your constant when doing your experiments?
[post=297518]Quoted post[/post]
[/b][/quote]One easier way to think about water is that it is 62.4 lb per cubic foot. But anyway, we add components into the mix such as silica fume, cenospheres, glass microspheres, etc. which take up space in the mix and decrease the overall weight of it so that it can float. This type of concrete is rarely used since it isn't the most durable, and concrete is mostly used where its strength in compression is needed most (ex: roads, columns, etc.)
Jana, "Hide and Go Fuck Yourself" was always my favorite line from that recording, excellent choice.