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Old 10-11-16, 02:02 PM   #3
nibs
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I have used fly ash in quite a lot of my work, it works really well, ups the strength or replaces some of the cement.
Put a brick of EPS crete into the firebox of my hot tub heater, after a couple of days the styrofoam was gone and had left an interesting cement sponge looking brick, still fairly strong tho'.
One of the neat things about epscrete is that it is light, so forming can be much less work and money.
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