'Roman mixture generated heat' presentation slideshows

Scientist Harry Coumnas Clears the Mystery about the 2000 Year Old Roman Concrete

Scientist Harry Coumnas has unlocked the mystery of Roman concrete which has resisted the elements for thousands of years. The ancient sea walls built by the Romans used concrete made up of lime and volcanic ash to bind with rocks. Harry has discovered that the elements within the volcanic material reacted with the sea water to strengthen the construction.

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