The Romans made numerous
advancements in solid innovation including the utilization of lightweight Aggregates
as in the top of the Pantheon, and inserted fortification as bronze bars,
despite the fact that the distinction in warm extension between the two
materials created issues of spalling. It is from the Roman words
"caementum" which means a harsh stone or chipping and
"concretus" which means become together or exacerbated, that we have
acquired the names for these two now basic materials.







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