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.
