Electric Pulse Fragmentation of High Performance Concrete

The November issue of Minerals Engineering will contain an article on the recycling of ultra-high performance fibre reinforced concrete (UHPFRC) by electric pulse fragmentation (PF). Written by SELFRAG staff in conjunction with the French Geological Survey (BRGM) and LafargeHolcim as part of the Horizon 2020 HISER project, this article is an important step towards improving the recycling of construction materials.

UHPFRC presents a significant challenge to the construction/demolition industry as it is extremely durable and difficult to crush as it smears and flows, meaning non-standard crushing systems need to be investigated.

The material was treated in both the Lab and on the Pre-weakening test station (PWTS) pilot plant, and showed 33% liberation of fibres a around 5kWh/t energy input, with improved recovery at higher energies.

The article can be freely accessed from here for the next 50 days, after which a magazine subscription is required.