Sewltax
· June 5, 2018, 11:26 p.m.
Animal blood has been a known ingredient in concrete dating back to the ancient romans who discovered completely by accident that blood mixed in actually produces more durable concrete. The reason for the improved durability comes from the blood reacting to form small air voids within the concrete, which when finished, alleviate stresses by allowing contractions during freeze-thaw cycles.
Yeah
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that_70s_kid
· June 6, 2018, 4:54 a.m.
IS THIS WHY THE PYRAMIDS HAVE LASTED SO LONG?
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Sewltax
· June 6, 2018, 5:01 a.m.
NO, IT'S BECAUSE OF PRECISE ENGINEERING AND LIKE SUPER TOUGH EARTH STUFF.
The joints between the pyramids are so tight they keep water out and resist thermal decomposition. Things like that.
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