Carbonation
AssessTechniques
Reaction in which atmospheric carbon dioxide forms carbonate minerals inside concrete.
Why it's here
Placed in Assess: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 1 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.
Evidence (1)
- 6Hacker News·7/17/2026researchStudy Finds Carbonation Helps Roman Concrete Last
Researchers studying 1,900-year-old concrete from Hadrian's Villa found that carbonation, alongside the known pozzolanic reaction, helped form calcite that sealed cracks and pores over time. The findings may guide the development of more durable, lower-emission modern concrete.