Testing the WWI concrete ships and WWII concrete barges (thecretefleet.com)
Researchers are studying the durability and potential reuse of World War I concrete ships and World War II concrete barges, with some examples still afloat or submerged.
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Researchers are studying the durability and potential reuse of World War I concrete ships and World War II concrete barges, with some examples still afloat or submerged.