Question

In ____________ the British engineer John Smeaton developed the method of making the aqueous cement



fill in the blanks
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Answer 1

Explanation:

After the fall of the Roman Empire in the A.D. 400's, the art of making cement was lost. It was 13 centuries later, in 1756 that the British engineer, John Smeaton pioneered the use of hydraulic lime in concrete, using pebbles and powdered brick as aggregate.

Answer

1756

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