Lafarge Envirocem cuts out dig and dump costs

A cost-effective alternative to dig and dump, developed by Lafarge, has completed successful trials and is ready to roll.

Lafarge Envirocem Solutions general manager Keith Bradshaw told CJ: "Accelerated Carbonation Technology (ACT) is the term for the reaction of special cements from Blue Circle, which we've branded Envirocem. It is a treatment for contaminated land, soils and wastes that gives improved performance characteristics in the stabilisation/solidification of contaminants."

One of the benefits of the solution is that it gives a carbonation reaction in minutes so there is no waiting for curing and it can be placed immediately.

Bradshaw explained that it can be more cost effective than dig and dump as it reduces vehicle movement by up to 90%.

"It eliminates the need for importing backfill materials, and the flexibility of the system allows for targeted treatment of hot spots," said Bradshaw.

Lafarge has carried out several trials of the solution, including one for Holton Borough Council and at the Astra Fireworks site in Kent.

"The equipment is ready, the ACT has obtained the mobile plant licence and we are looking for sites," added Bradshaw.