2 History of mortars and concretes

During the history of mortars and concretes since the successfull experiments by John Smeaton and Robert Stevenson using hydraulically setting cements in the construction of the Eddystone lighthouse at Plymouth (UK) already in 1756, nearly 250 years ago, and Bell Rock lighthouse at the Firth of Forth in 1811, and the invention of Portland cement by Joseph Aspdin in Wakefield (UK) in 1824, there have been no great advances regarding its properties as an industrial floor.