Abstract—The effect of initial curing on carbonation curing of lightweight concrete masonry units (CMU) was examined. Initial curing was performed from 4 to 18 hours at a relative humidity of 50% and temperature of 25°C. Based on cement content, four-hour carbonation curing allowed concretes to uptake 22% to 24% CO2 with initial curing and 8.5% without initial curing, while prolonged 4-day carbonation recorded an uptake of 35%. Carbonation curing can replace steam curing in CMU production to accelerate hydration and recycle cement kiln CO2 in a beneficial manner.
Index Terms—Concrete masonry unit, curing, carbonation, carbon uptake.
Hilal El-Hassan is with the Dept. of Civil Engineering at the American University in Dubai, Dubai Media City, Dubai, UAE, and P.O. BOX 28282 (email: helhassan@aud.edu).
Yixin Shao is with the Dept. of Civil Engineering and Applied Mechanics at McGill University, Montreal, Quebec, Canada, H3A 2K6 (email: yixin.shao@mcgill.ca).
[PDF]
Cite:Hilal El-Hassan and Yixin Shao, "Carbon Storage through Concrete Block Carbonation," Journal of Clean Energy Technologies vol. 2, no. 3, pp. 287-291, 2014.
