Belgium: Etex and Heidelberg Materials have joined forces on CEMLOOP XL, an industrial-scale project co-funded by the EU’s LIFE Programme that aims to revolutionise fibre cement recycling through a fully closed-loop process integrating carbon capture utilisation and storage (CCUS) technology. According to a press release by Etex, this will reduce CO₂ emissions in cement production by at least 20% and cut energy consumption in the process by 15%.
The project will combine the two companies' expertise to create a fully circular process where waste fibre cement is transformed into high-quality secondary raw material to produce low-carbon cement that will be reused in new fibre cement products. Etex, in collaboration with the Jacobs Group, is developing a recycled fibre cement paste (RFCP) process that converts waste from Etex’s production lines and the wider construction sector into reusable material and avoids landfilling. A new recycling facility in Hemiksem, near Antwerp, is under construction and scheduled for completion by mid-2026.
At Heidelberg Materials’ Lixhe cement plant in Liège, the company is implementing CCLIX, a carbonation process that treats RFCP with CO₂ captured from kiln exhaust gases. This produces carbonated RFCP (cRFCP), which regains cementitious properties and can partially replace clinker in low-carbon cement production. A dedicated carbonation reactor is set to be commissioned at Lixhe by the end of 2028.
Etex says that CEMLOOP XL will prevent 60,000t/yr of fibre cement waste, save 100,000t/yr of raw limestone, and capture or avoid around 900kg of CO₂ for each tonne of RFCP produced. This process combines utilisation and storage in one step - the captured CO₂ becomes chemically bound within the new product, acting as a permanent CO₂ sink.
Eric Bertrand, chief innovation officer at Etex, said “By 2030, we aim for over 20% of our inputs to come from circular sources and to send zero waste to landfill. Fibre cement plays a central role in this transformation. For the first time, it will follow a fully circular journey - a milestone only made possible through strong partnerships like this with Heidelberg Materials.”
