News & events
BZE and ISCA working to encourage low carbon cements
Australia could lead the world on zero carbon cement with the Infrastructure Sustainability Council of Australia’s Infrastructure Sustainability (IS) rating scheme.
This follows the release of the BZE Rethinking Cement report that shows how Australia could develop the world’s first zero carbon cement industry, helping to wipe out 8% of all global emissions caused by making cement.
ISCA’s CEO Antony Sprigg said, “Our new IS Innovation Challenge will reward infrastructure projects that manage to replace at least 50% of Portland cement with alternative, low carbon cements.”
BZE’s Head of Research, Michael Lord, said, “We think that Australia can lead the world towards zero carbon cement, and ISCA’s new Innovation Challenge will make a big contribution to that.”
ISCA’s Infrastructure Sustainability Rating scheme will introduce two new incentives, aligned with BZE’s approach:
ISCA already rewards projects for replacing a proportion of Portland cement clinker with low-carbon alternatives such as waste fly ash. Their analysis indicates that IS rated projects have achieved an average of 21-25% Portland replacement. However, Rethinking Cement presents many projects which have exceeded this level. For example, the Crossrail project, a new 100-kilometre railway across London, has achieved an average of 50% Portland cement replacement. And Australia’s newest airport, Brisbane West Wellcamp Airport, was built mostly from low-carbon geopolymer concrete.
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