Pseudo-dynamic carbonation for concrete curing and carbon storage Online publication date: Wed, 12-Aug-2015
by Yixin Shao; Arthur Zhou; Mehrdad Mahoutian
International Journal of Materials and Structural Integrity (IJMSI), Vol. 9, No. 1/2/3, 2015
Abstract: Concrete demonstrates the capacity to absorb carbon dioxide. The reaction between concrete and carbon dioxide accelerates concrete curing at early age and converts CO2 into calcium carbonate for carbon storage. As-captured flue gas without recovery can be directly used in this application. Because of low CO2 concentration in flue gas, a pseudo-dynamic carbonation process was developed with multiple injection and releasing cycles. The effect of process parameters on carbon uptake and strength gain was examined. It was found that, with a flue gas of 25% CO2 concentration and 2-hour carbonation, cement paste could uptake CO2 of 8-11% based on cement content in immediate carbonation and concrete could absorb CO2 at 7-9% after 18-hour initial curing. The maximum possible carbon uptake from flue gas carbonation was also determined. It was about 15-17% based on cement mass. While immediate carbonation could significantly enhance the early strength, carbonation after initial curing did not improve significantly the late strength.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Structural Integrity (IJMSI):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook