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concrete foam

Home Forums Research Engineering concrete foam


This topic contains 4 replies, has 2 voices, and was last updated by Profile photo of Ken Sims Ken Sims 3 years, 2 months ago.

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  • #21095
    Profile photo of spark



    Does anyone work with concrete foam? I guess it is also called foamed concrete.

    I looked it up and some concrete foam can have a density of 160 to 320 kg/m3.

    Water density is 1000 kg/m3. Sea water desity is a little bit more than 1000 kg/m3 .

    I think a 160 kg/m3 desity foan concrete structure would float in sea water.


    I thought about a sailboat shaped, solid concrete foam structure with steel reinforcement.

    The idea would be that a solid structure that floats because of it’s own density is less than water.

    The sailboat shape might make it dynamically stable.  And the steel reinforcement would give

    some strength.


    I will try to build a model to demonstrate the idea.  I is similar idea as the concrete submarine.

    I would call it the ‘solid concrete foam sailboat’.


    There are stranger ideas out there than this. For example the US Navy project Habakukk.

    They used sawdust and water mix to make an iceberg of a size and shape of a ship for

    airplanes to land. They used engines on it and used refrigeration units to keep the iceberg frozen.

    That was in year around 1945, a Navy WWII project.  They found that water mixed with sawdust

    and frozen is strong.


    There might be other materials too that cheap, strong and floats.

    Profile photo of spark

    What is this “has 1 voice” thing?


    Profile photo of Ken Sims
    Ken Sims

    The number of voices is how many different people have posted in the thread.

    Profile photo of spark

    Thank you.


    Are there any indications of Big Brother is watching these posts?


    Profile photo of Ken Sims
    Ken Sims

    While it is required to be a logged-in registered user to post in the forums, there are no restrictions on reading them.
    So you should not have any expectation of privacy for anything that you post here.

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