Jackson Civil Engineering has overseen new trials of ultra-low carbon concrete.
Jackson conducted the trials in collaboration with its trusted supply chain partner, Breedon Concrete, who offers a product called Earth Friendly Concrete (EFC).
EFC, developed by Australian construction materials provider Wagners, is Portland cement-free and, instead, uses a geopolymer binder system made from the chemical activation of two industrial waste by-products - blast furnace slag and fly ash. EFC typically offers a 70% saving in embodied carbon compared to standard concrete mixes, and helps to reduce the carbon footprint associated with concrete use in construction projects.
The EFC ultra-low carbon concrete trials were made possible after Jackson secured research funding from the Environment Agency.
Jackson Framework Director Richard Barnes said: “We have been championing the use of ultra-low carbon concrete for some time now and it’s awesome to see further product examples hitting the ground in live trials. “Given the scale of the carbon footprint of engineering solutions incorporating concrete, it is vital we deliver flexible alternatives for the Environment Agency to deliver on all of our aligned Net Zero ambitions”.
There are two phases to the trials: the cement has been tested under laboratory conditions and also on-site. The laboratory tests will look at how EFC performs at 14 and 28 days. Physical trials took place at Breedon’s Norton Disney Quarry in Lincolnshire where teams from Breedon and Jackson worked collaboratively to refine the dosage of concrete additives and water content to optimise the workability of the product.