Cement News tagged under: portland cement
200th anniversary of the Portland cement patent21 October 2024, Published under Cement News200 years ago today, on 21 October 1824, the patent for Portland cement was granted to Joseph Aspdin (1778-1855), a bricklayer and inventor from Leeds, UK. The product was called Portland cement because of the resemblance of the hardened concrete to Portland stone, a limestone quarried on the Isle of Portland in Dorset, UK. Portland cement, patented by Joseph Aspdin on 21 October 1824 Mr Aspdin, along with contemporaries including Louis Vicat (hydraulic limes), Isaac Johnson (s... |
Aluminium and iron in clinker06 February 2019, Published under Cement NewsAluminium and iron are two of the key components in Portland cement clinker. Varying their presence in clinker can have significant effects on the final clinker. Arthur Harrisson looks at some of the impacts of such variations. Figure 1: light grey aluminate and white ferrite very slowly cooled. The hexagonal blue alite crystal below centre is 30µm across The four essential constituents of Portland cement clinker are usually listed as: • calcium oxide (CaO or, in cement chemi... |
C2S solid solution reactivity in high-belite cement28 November 2017, Published under Cement NewsThe key cause of the high energy intensity in the cement production process is the high heat required to form alite, the main constituent of Portland cement. One option is to lower the alite content, which leads to a higher share of belite. However, such high-belite cement often has a lower early strength, impacting on the quality of the final product. To address this issue, achieving a suitable control of belite reactivity is essential. By Dr Eng Daisuke Kurokawa and Shun Niijima, Taiheiyo... |
7th Brazilian Conference on Portland Cement04 August 2016, Published under Cement NewsOver 250 delegates gathered in the Maksoud Plaza Hotel, São Paulo, Brazil, for the 7th Brazilian Conference on Portland Cement (CBCi) between 20-22 June 2016. The conference highlighted Brazil’s commitment to COP21 and the progress the cement industry has made in helping the country work towards achieving its climate goals. Over 250 delegates visited the 7th Brazilian Conference on Portland Cement in São Paulo, Brazil Brazil’s cement industry is the largest in Latin America with... |
Page
1
of
1
1