The demand for alternative supplementary cementitious materials is growing due to the increased share of renewable energies and the accompanied reduced availability and decreasing quality of common supplementary cementitious materials. The Institute for Construction Materials evaluates innovative secondary resources with respect to their reactivity in search of ecological efficient supplementary cementitious materials and investigates the impact of the materials in question upon concrete microstructure and resulting concrete properties.
Figure: Scanning electron micrograph of a damaged fly ash sphere embedded in a concrete matrix