Displaying items by tag: clay
UK: Recycling company Scott Bros plans to install a plant to produce low carbon concrete made from filter cake at its soil wash plant in Middlesbrough. The company has been working with Teesside University on a series of trials to find by how much it can reduce the amount of ordinary Portland cement (OPC) it is using in its concrete mixes. It has been researching how to use filter cake, a fine-grained clay, which it produces as a by-product from its two ‘urban quarries’ which convert construction and excavation waste into sand and aggregate. The silicate clay-rich filter cake, which has cementitious properties, is currently used as low value BS-certified pond lining material or inert engineering fill.
The €715,000 research project is being funded by Innovate UK, part of UK Research and Innovation (UKRI), the UK’s innovation agency.
Australia: First Graphene has partnered with Suvo Strategic Minerals to develop graphene-enhanced metakaolin for use in cement and concrete production. Metakaolin is a pozzolanic material derived from kaolinite clay. The partners believe that the technology has commercial potential to improve concrete performance and reduce CO2 emissions.
France: Sustainable concrete producer Materrup has shared plans for its upcoming Bordeaux precast concrete elements plant. The L’Usine Nouvelle newspaper has reported that the facility will produce precast elements from Materrup’s cement-free concrete, which it produces from uncalcined clay, an activator and a precursor at room temperature. The technology, called Clay Cement 1 (MCC1), reduces CO2 emissions by 50 – 80% compared to ordinary Portland cement (OPC), according to the producer. It previously opened a Euro7m 50,000t/yr plant in the Atlantisub Business Area in Saint-Geours-de-Maremne, Nouvelle-Aquitaine.
