Carbonation Curing of Slag-Cement Concrete for Binding CO2 and Improving Performance

摘要: Early age carbonation curing of slag-cement concrete was investigated to assess the feasibility binding CO2 in building products while improving their short-term and long-term performances. Four binder types were compared: an ordinary portland cement; 85/15 slag a 75/25 blend; 50/50 blend. A 2-h carbonation-curing treatment allowed concretes bind 8–10% by mass attain as much 82% 24-h hydration strength. The subsequent strength development carbonated slower first 24 h possibly due carbonate buildup, but it comparable conventionally hydrated after 28 days. shown have fracture toughness that concrete. freeze/thaw durability deicing salt solution vastly improved treatment. pH reduced still above threshold level required for passiva...