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Do you believe there is a U.S. government cover-up surrounding 9/11? (pg. 109)
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| culorut |
I have a funny feeling about that link....tell you what you click on it first. |
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| VAR |
| quote: | Originally posted by culorut
I have a funny feeling about that link....tell you what you click on it first. |
ok,
take my hand,
here we go;
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| Philby |
| quote: | Originally posted by culorut
Your a loser. |
:stongue:
ahh classic internet come back, complete with bad spelling and all |
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| WM2 |
| quote: | Originally posted by shaolin_Z
LOL, yeah, apparently concrete gets puverized into dust by waffles... er pancaking. Hmmm, could explosives do that? Just a thought. Pancacking also causes explosions in the basement before builidings collapse, don't forget that bit :tongue2. Not to mention it confuses the out of NORAD too. |
This is hilarious to me. You obviously have no idea what you're talking about if you think only explosives would make concrete or more likely cement turn into dust. Did you know that the higher the floor is in a building the more air pockets engineers allow in the mixture to make it lighter. Cement is also a ceramic which does not react well to any kind of sudden shock. It's also made using this interesting dust like material called sand. |
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| WM2 |
| quote: | Originally posted by colonelcrisp
the truth is (as proven by nasa recently) that einstein was right, and newton was wrong. gravity is a phenomenon caused by large masses distorting the space time fabric....... |
I didn't hear that, but it's cool to see his work validated finally.
As far as my argument goes, my point was that things tend to fall at 9.8 M/S ^2 on Earth. I'll have to see if I can find how fast something would on other planets. |
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| WM2 |
| quote: | Originally posted by culorut
Your a loser. |
Debate over. He wins.:haha: |
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| colonelcrisp |
| quote: | Originally posted by WM2
This is hilarious to me. You obviously have no idea what you're talking about if you think only explosives would make concrete or more likely cement turn into dust. Did you know that the higher the floor is in a building the more air pockets engineers allow in the mixture to make it lighter. Cement is also a ceramic which does not react well to any kind of sudden shock. It's also made using this interesting dust like material called sand. |
dispite my disagreements with shaolin's views, he had it right... concrete.
concrete is a mixture of portland cement, small aggregate (sand) and large aggregate (crushed stone) to form a non homogenus building material.
cement - ie portland cement is a binder, an ingrediant wich is hydrophobic and bonds together elements in a mixture. without the aggregates both fine and coarse, cement is very weak. its like glue. glue is great at bonding things, but if you were to pour a slab of white glue, its brittle and weak.....
ps spelling im hammered...... i just got hired at NCE engineering and im celebrating with poutine, labatt 5o and a whole brisket of montreal smoked meat |
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| colonelcrisp |
| quote: | Originally posted by WM2
This is hilarious to me. You obviously have no idea what you're talking about if you think only explosives would make concrete or more likely cement turn into dust. Did you know that the higher the floor is in a building the more air pockets engineers allow in the mixture to make it lighter. Cement is also a ceramic which does not react well to any kind of sudden shock. It's also made using this interesting dust like material called sand. |
furthermore, what you are speaking about is called air entrainment. and the amount of air entrained into concrete is negligible. more commonly for light weight concrete applications they employ modifiers such as VMA and Super P (viscosity modifying agent and super plasticizer) to reduce the ammount of water required in teh mixture. as well as using less dense agregate such as limestone, which is pretty common as it is. but for non weight critical applications, they commonly use slag (byproduct of smelting). fly ash from coal fired power plants may also be used as a substitue for portland cement up to a certain percentage as portland is quite pricy. the shock isnt what causes concrete to pulverize. when it fails in flexture it literally blows apart. ive done some lab work iwth one of my proffs on high strength concrete beam design (80 MPA mix) and when those things fail in bending. or compression the concrete grenades.... concrete also spalls wehn it is heated... spalling is when the water in the concrete vaporizes and causes heated gas pockets to form. these blow small pieces of concrete off the surface. |
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| WM2 |
| Okay. I figured I was probably a little off, but I've not messed with a whole lot of concrete yet. That's flipping sweet though that it blows apart. I want to try that sometime, but I doubt I'll get to as I'm pretty much playing with metals and polymers since we don't use a whole lot of ceramics in cars. |
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| colonelcrisp |
| quote: | Originally posted by WM2
Okay. I figured I was probably a little off, but I've not messed with a whole lot of concrete yet. That's flipping sweet though that it blows apart. I want to try that sometime, but I doubt I'll get to as I'm pretty much playing with metals and polymers since we don't use a whole lot of ceramics in cars. |
well clutch packs and brake pads....... but ya other than that not much ceramic in cars. i worked for ford motor company for 5 years as an engineering intern..... |
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| WM2 |
| Then you have spark plugs and the tips of diesel engine fuel injectors, and that's about it unless you count after market exhaust systems. Not a whole lot going on until we figure out a way to make them more elastic. |
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| ogvh5150 |
| quote: | Originally posted by Marc Summers
My point being, is if it wasn't the same building design, it's not a valid comparison. |
How many drowning victims do you need as proof that a ship sank at sea? |
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