After years of slow headway, building design and industry professionals say sharp reductions in the climate impact of concrete are possible now. That is significant because cement, the critical glue that holds concrete together, is so carbon intensive that if it were a country, it would rank fourth as a climate polluter.
The Global Cement and Concrete Association this year committed to zero emissions concrete by 2050. No single solution has surfaced to reach this goal. But an expanding set of data tools and departures from tradition are starting to add up.