Concrete Turbine

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anita pope
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Concrete Turbine

Post by anita pope » Tue Feb 09, 2010 9:23 am

Hi , I am Anita , This is my first post to the forum and I present my best.
I want to build a KJ 66 but I dont want to spend hundreds to CNC Shop.
I always interested in with concrete and concrete with perlite is extremelly heat resistant.
Concrete is extremelly strong to pressure and It is possible to dope it with micro carbon fiber or nanotubes.
Concrete withstand to big fires also.

What do you think ?

Is it possible to construct a turbine and the compressor wheel out of this material ?

Cheers ,
Anita

ace_fedde
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Re: Concrete Turbine

Post by ace_fedde » Tue Feb 09, 2010 10:17 am

Anita,
Please remember that ceramics, like concrete, hardly have any strenght in the field of pull/stretch. That's exactly the kind of force (centrifugal) that is induced in a high rpm spinning turbine wheel. Fibers might not help you there, the centrifugal forces might just rip off the concrete of the fibers.
Perhaps I'm a bit to negative about it, but consider what I say.
Fedde
Your scepticism is fuel for my brain.

ace_fedde
Posts: 421
Joined: Mon Feb 16, 2009 9:26 pm
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Location: The Netherlands

Re: Concrete Turbine

Post by ace_fedde » Tue Feb 09, 2010 10:17 am

Anita,
Please remember that ceramics, like concrete, hardly have any strenght in the field of pull/stretch. That's exactly the kind of force (centrifugal) that is induced in a high rpm spinning turbine wheel. Fibers might not help you there, the centrifugal forces might just rip off the concrete of the fibers.
Perhaps I'm a bit to negative about it, but consider what I say.
Fedde
Your scepticism is fuel for my brain.

ace_fedde
Posts: 421
Joined: Mon Feb 16, 2009 9:26 pm
Antipspambot question: 0
Location: The Netherlands

Re: Concrete Turbine

Post by ace_fedde » Tue Feb 09, 2010 10:18 am

Anita,
Please remember that ceramics, like concrete, hardly have any strenght in the field of pull/stretch. That's exactly the kind of force (centrifugal) that is induced in a high rpm spinning turbine wheel. Fibers might not help you there, the centrifugal forces might just rip off the concrete of the fibers.
Perhaps I'm a bit to negative about it, but consider what I say.
Fedde
Your scepticism is fuel for my brain.

ace_fedde
Posts: 421
Joined: Mon Feb 16, 2009 9:26 pm
Antipspambot question: 0
Location: The Netherlands

Re: Concrete Turbine

Post by ace_fedde » Tue Feb 09, 2010 10:19 am

Three times? Cool!! Never had thet before :wink:
Your scepticism is fuel for my brain.

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