Items filtered by date: Friday, 14 February 2020
US slag cement shipments rise by 10.8% to 3.8Mt in 2019 14 February 2020
US: The Slag Cement Association (SCA) data shows that slag cement shipments rose by 10.8% year-on-year to 3.8Mt in 2019 from 3.5Mt in 2018. This is the fourth consecutive year that slag cement shipments have increased at a rate of 10% or greater. The SCA collects shipment data from its members.
“We have seen a substantial increase in slag cement use as concrete professionals become more and more familiar with the product” said Ed Griffith, president of the SCA.
Hanson uses ground granulated blastfurnace slag product in London super sewer project 14 February 2020
UK: Hanson supplied its Regen ground granulated blastfurnace slag (GGBS) product for use on part of the Thames Tideway Tunnel super sewer project in Wapping, London. The product was used to overcome difficult ground conditions. Around 5700t tonnes of Regen, supplied from its Purfleet grinding plant in Essex, was used with 3000t of Ketton cement to create a binder to stabilise soil so work to construct a combined sewer overflow could progress and provide a connection to the main east tunnel.
Costain, VINCI Construction Grands Projects and Bachy Soletanche worked with Hanson in laboratory trials to test the performance of the system and suitability of the selected mix design. Deep soil mixing, a technique that enhances the characteristics of weak soils by combining them with a cementitious binder, was chosen as the final stabilisation method.
The Thames Tideway sewer network expansion is due for completion in 2024 and is happening across 24 construction sites in London, spanning from Acton in West London to Beckton in the east of the city.