The path towards less CO2
ALKALI-ACTIVATED CONCRETE
This pilot reuses co-combustion bottom ash (from municipal solid waste and sewage sludge) in alkali-activated concrete for producing 50 m² of paver blocks. After metal removal and milling, the ash replaced 20% of
silicate-activated GGBFS in the binder, with a thin cement-based top layer on each block.
silicate-activated GGBFS in the binder, with a thin cement-based top layer on each block.
PARTNERS
UGent, ResourceFull, Veolia, SECO
Dual layer block
dual layer block
Ash milling and sieving
Ash milling and sieving
CARBON CURING CONCRETE
This pilot showcases the reuse of municipal solid waste incineration (MSWI) fly ash in carbon-curing concrete for the production of 50m² of paver blocks. The mix design incorporated stainless steel slag and MSWI fly ash with a 20% ash replacement rate, and the pavers were cured in a CO₂ chamber under controlled temperature and humidity conditions.
UGent coordinated the work, with UGent and Orbix developing the mix, Orbix producing, Veolia supplying the ash, and SECO ensuring quality. The demonstration highlights how incineration ash can capture CO₂ during curing, enhancing concrete strength while converting waste into durable products.
UGent coordinated the work, with UGent and Orbix developing the mix, Orbix producing, Veolia supplying the ash, and SECO ensuring quality. The demonstration highlights how incineration ash can capture CO₂ during curing, enhancing concrete strength while converting waste into durable products.
PARTNERS
UGent, Orbix, Veolia, SECO
Cross-section of paver
Production
Carbonation degree
