According to theory, it was this slaked lime that ancient Romans mixed with the pozzolana. Ancient concrete vault in Rome. (Michael Wilson/Flickr/CC-BY-SA 2.0) Based on the team's analysis, the lime ...
Called a "wood vault," the carbon-filled wood would be buried within the special clay space, allowing it to sit and be preserved with minimal loss of carbon back into the atmosphere. According to the ...
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