When did John macadam invent the Tarmac?
The original term was tarmacadam, and was later shortened to tarmac in the latter part of the 19th century. John Loundon Mac Adam began experimenting with, what was then, a revolutionary technique of using uniform crushed, then graded stone in 1783, and began using the “macadamization” system in 1816 when he became surveyor for the Bristol Turnpike Trust. As this system became more refined it evolved into tarmac, and the first so called road was built in Paris in 1854, eighteen years after the death of John Loudon Mac Adam.
