Cement Archives - Transfire

The efficient use of ground granulated blast furnace slag (GGBS) in reducing global emissions

The efficient use of ground granulated blast furnace slag (GGBS) in reducing global emissions

A draft copy of a cross industry paper, which included contributions from TranFIRe researcher Michal Drewniok, has reported the current and future levels of availability of ground granulated blast furnace slag (GGBS) in concrete and has concluded that GGBS is a highly utilised and constrained material. As such, it was noted that any local increase in the amount of clinker substituted with imported GGBS is unlikely to decrease global emissions. GGBS is a co-product of the iron and steel industry obtained by water-cooling and grinding blast furnace slag. It is used as a supplementary cementitious material (SCM) in concrete due to its cementitious properties, which enhance the long-term strength and durability. The technical benefits of including GGBS in concrete are now well understood and documented, but in recent years GGBS has also been a subject of discussion among concrete producers for its ability to partially replace Portland cement clinker [...]

Joanna Johnson2023-07-24T13:23:51+00:00July 24th, 2023|

Mapping material use and embodied carbon in UK construction

TransFIRe researchers have co-authored a paper in which they quantified and benchmarked the material use and embodied carbon to the deliver the 'core and shell' of typical residential and non-residential buildings. In this paper embodied carbon emissions, equivalent to greenhouse gas emissions (GHG), are released during the production of materials and construction processes rather than when it is in use. They are an essential measurement to deliver carbon neutral buildings. With the government’s 2050 net-zero deadline approaching and the pressure to decarbonise increasing, it is vital that ways of minimising levels of embodied carbon are tackled. The detailed bottom-up approach taken by the researchers showed that, compared to the top-down analysis, the embodied carbon emissions were underestimated by up to 20%. Combining their detailed bottom-up model with top-down analysis and other material consumption data, the researchers found that in 2018 (the year in which the most recent available high-level [...]

Joanna Johnson2023-07-18T11:00:51+00:00July 18th, 2023|

Mapping energy and material flows for the foundation industries

As the costs of goods and services continue to rise and the world looks for ways to become more efficient and sustainable, an approach called Gentani is being used to help reduce waste and inefficiency. Gentani is a Japanese word that means output level or consumption rate, but in these circumstances, it means the minimum resource you need to carry out a process. Using this approach, over the past few months TransFIRe’s Workstream 1 (WS1) have been able to map the energy and material flows at the UK level for all six of the foundation industries (cement, chemicals, ceramics, metals, plastics and paper) to identify potential opportunities for improvement and symbiosis. The researchers are also developing an approach to present the combined energy and material flows that will allow reporting data in a concise, transparent and flexible manner. The new approach has the flexibility to scale from company to [...]

Joanna Johnson2024-01-29T11:33:36+00:00January 30th, 2023|