Joseph Aspdin was an influential English inventor and tradesman whose work fundamentally changed the construction industry. Operating as a bricklayer and stonemason, he applied his practical knowledge of building materials to develop a new form of hydraulic cement.
On 21 October 1824, Aspdin secured a patent for his invention, which he named Portland cement due to its resemblance to the high-quality building stone quarried on the Isle of Portland. His innovation involved a specific process of calcining limestone and clay, marking a pivotal step in the history of modern masonry and structural engineering.