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Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin, and is usually made from limestone.
20 March 1855. (1855-03-20) (aged 76) Wakefield, England. Occupation (s) Bricklayer, businessman, inventor, stonemason. Joseph Aspdin (25 December 1778 – 20 March 1855) was an English bricklayer, businessman, inventor, and stonemason who obtained the patent for Portland cement on 21 October 1824. Plaque commemorating Joseph Aspdin in the yard ...
The resulting hard substance, called 'clinker', is then ground with a small amount of gypsum (CaSO 4 ·2H 2 O) into a powder to make ordinary Portland cement, the most commonly used type of cement (often referred to as OPC). Portland cement is a basic ingredient of concrete, mortar, and most non-specialty grout. The most common use for Portland ...
His son William continued developments into the 1840s, earning him recognition for the development of "modern" Portland cement. [33] Reinforced concrete was invented in 1849 by Joseph Monier. [34] and the first reinforced concrete house was built by François Coignet [35] in 1853.
British mason, bricklayer and inventor of modern Portland cement. William Aspdin (23 September 1815 – 11 April 1864) was an English cement manufacturer, and a pioneer of the Portland cement industry. [1] He is considered the inventor of "modern" Portland cement. [2] [3] : 184, 191 He has also been termed "an incorrigible liar and swindler".
John Smeaton FRS (8 June 1724 – 28 October 1792) was an English civil engineer responsible for the design of bridges, canals, harbours and lighthouses. [1] He was also a capable mechanical engineer and an eminent physicist. Smeaton was the first self-proclaimed "civil engineer", and is often regarded as the "father of civil engineering ". [2]
Isaac Charles Johnson. Isaac Charles Johnson (28 January 1811 – 29 November 1911 [1]) was a British cement manufacturer, and a pioneer of the Portland cement industry. Born in London, his father was a charge-hand at Francis & White's "Roman Cement" plant in Nine Elms. He himself worked there as a labourer from age 16 while studying chemistry.
Ordinary Portland cement mortar, commonly known as OPC mortar or just cement mortar, is created by mixing powdered ordinary Portland cement, fine aggregate and water. It was invented in 1794 by Joseph Aspdin and patented on 18 December 1824, largely as a result of efforts to develop stronger mortars.