Simple water submersion test for CEBs - un-stabilized vs. lime-stabilized vs. cement-stabilized
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- Опубликовано: 28 ноя 2021
- I produced some un-stabilized, lime-stabilized, and cement-stabilized compressed earth blocks with my dirt in Colorado Springs and wanted to see how the lime-stabilized (both 8% and 16%) blocks held up in a water-submersion test. I was overall impressed with the way they held up and was glad that the 8% lime blocks did as well if not better than the 16% lime blocks. Next I'm going to produce some 6% and 4% lime-stabilized blocks and see how they do in comparison.
As a side note, one thing I didn't anticipate is how the portion of the lime-stabilized blocks protruding above the waterline started to erode...while the portion of the blocks that were submerged stayed intact. My theory is that because temperatures dropped below freezing both nights, the un-submerged portion of the blocks experienced a freeze-thaw cycle that caused some deterioration. I'll confirm this in a follow-on experiment in which I use the same setup but keep the block above freezing.
aectearthblock.com/
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If you add volcanic pozzolan the the lime it will continue to cure for decades getting stronger and stronger . And it can cure under water. This is how the Romans built their ports, and it explains why many Roman buildings are still standing thousands of years, after they were built, despite regular exposure to moisture. I believe it has something to do with the silicate in the ash which affect the reactions as the lime cures
many pozzoloans around, doesnt have to be volcanic
This is awesome. Thank you for providing this content
I'm leaning toward a mix of around 11% binder, with a bit more lime than portland.
Richard,
It would be awesome if you compression tested those blocks and let us know the results.
Thanks again and thanks for your service SIR.
Isaiah
Please do another video with the compression tests. Results. Thank you!
We will!
@@advancedearthenconstructio5103 after decent cure time like 2-3 months for lime.
Can’t hear the video, sound is too quiet
Would be good if you drop tested them as well from about 3 metres
Great video but please buy a cheap wireless microphone.
Do you have a video on your process for making the lime stabilized block? Is it just native soil mixed with the lime and dampened a bit?
yes, that's correct.
How would these blocks hold up in places like Canada that experience regular freeze thaw cycles throughout the winter?
You can build with cement-stabilized CEBs anywhere...the idea is you cover the walls with lime-plaster, stucco, or siding...and/or a wrap-around porch....so they never get wet. There are CEB homes in Colorado that get plenty of freeze/thaw and snow...and they hold
-stabilized compressed soil with lime do good on winter, where I live 2 months in the year goes down up -15 Celsius and most of the houses in the area where made with a mix of clay soil lime and straws , to add thermal insulating and fire prof ad hemp straws* lots of . What is important is the base - the foundation has to be wider than actual wall (to have 1,5 m under the ground level the foundation ) that would sit on compacted rocks to drain water down and not build the moisture into the wall more than it can naturally handle. If have moist soil , there are all sort of techniques to drain the water from around the house.
Is it true that some ancient rammed earth techniques used animal blood as the stabalizer?
How long does it take for the lime stabilized block to cure
Some say about 30 days