Sustainability & low carbon
Sourced answers on sustainability & low carbon, written for the person standing in front of the problem.
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1
Is concrete porous?
Yes. Hardened concrete holds a network of capillary pores that absorb water and pass vapor, which is why sealers, air entrainment, and vapor retarders exist.
2Is concrete bad for the environment?
Cement, not concrete, is the problem — it drives about 7% of global CO2. Limestone cement, supplementary materials, and CO2 mineralization all cut that number.