Displaying items by tag: environmental product declaration
CCP Building Products working with Carbon8 on using ground granulated blast furnace slag in concrete blocks
07 December 2023UK: CCP Building Products has been working with Carbon8 to develop cement-free, carbon negative concrete blocks. The blocks will be produced using parent company SigmaRoc’s Greenbloc technology with Carbon8’s carbon negative aggregates. The approach is based upon reducing the cement content in concrete and CCP has developed a process that uses ground granulated blast-furnace slag (GGBS) as the main raw ingredient. Carbon8’s technology captures and stores more CO2 in the aggregates than is released in the manufacturing process, resulting in a carbon negative block.
CCP and Carbon8 announced in July 2023 that the first trials of the project had been successful. Ian St Hillaire, the Technology & Innovation Director for SigmaRoc, said “We set about producing trial samples of concrete blocks at site production scale to push the boundaries of possible. This led to some exciting developments in our Greenbloc technology using Carbon8 carbon-negative aggregate. Combining the alternative aggregate with cement-free technology in the right proportions allows us to successfully produce a concrete block that is not only ultra-low in carbon embodiment, but is actually carbon negative.”
CCP are planning to move on to larger plant trials and then start producing environmental product declarations (EPDs) to verify the new product’s carbon negative claims.
Poland: The Building Research Institute has issued environmental product declarations (EPDs) for Cemex Poland’s CEM III slag cement and five other cements produced at its Chełm and Rudniki cement plants and Gdynia grinding plant. The company additionally obtained EPD certification for its Vertua Classic and Vertua Plus concrete products, which contain cement produced using supplementary cementitious materials (SCMs).
Materials director Michał Grys said “For us, product certification is another important step towards sustainable construction and a sustainable future. EPD declarations provide our clients with additional confirmation of the properties of products offered by Cemex Poland. They also improve their chances of obtaining LEED or BREEAM certificates for their investments.”