Surface Durability Test with Line Trimmer
I then weighed the panels and lined them up on the lawn and ran a line trimmer along them all. As a test for surface durability. The first two panels didn’t do so well. The line trimmer cut grooves in the surface.
The third panel, with a higher percentage of Cement All did better. It only had minor damage.
Weight Reduction Results
The first two panels were very close in weight and averaged 64% lighter than regular gravel and sand based portland concrete.
The third panel was 52% lighter than regular concrete. I used more Cement All in this one cause I just had a hunch that this type of aircrete needed to be denser.
The panels look good and the bubbles appear to be uniform. I didn’t see any cracks forming or any warping as they fully cured and dried. So the density of the cement seems to be adequate so the panel can resist the internal stresses that build up during curing and drying.
I had hoped that the stronger CSA cement would make these panels more durable but they didn’t do so well against the line trimmer. The denser third one did better than the first two.
Final Thoughts on CSA Aircrete
So I hope that was helpful. And I think it showed that aircrete can be made from CSA based cement.
I can’t say just yet that it’s any better than a portland based version. There’s a possibility that the sand is actually detrimental and weakens the tiny bubbles. I’d have to get my hands on some pure CSA cement to see if that was the case.
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