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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Carbonation Curing of Cement Bonded
Fiberboard Made by Slurry-Dewatering Process
Author(s): Y. Shao and S. Wang
Publication: Special Publication
Appears on pages(s): 125-138
Keywords: carbon uptake; carbonation curing; cellulose fiberboard; very early
Abstract:Carbonation curing of cellulose fiberboard made by slurry-dewatering process was studied to examine their CO2 uptake capability, immediate carbonation strength and long term strength after subsequent hydration. Influencing parameters on CO2 uptake and strength gain were discussed. They
included compact forming pressure, drying time, drying temperature, carbonation duration, fiber/cement ratio and water/cement ratio. It was found that cement bonded cellulose fiberboards had excellent carbonation capacity. The percent carbon uptake ranged from 13.5 % to 23.6%, based on cement content and process conditions. High degree of carbonation significantly improved early age strength and had no detrimental effect on the subsequent hydration strength. To promote more CO2 uptake and higher strength gain, carbonation rate should be controlled. This can be achieved through system optimization. Carbonation curing has shown the potential to replace traditional autoclaving and gain technical, economical and environmental benefits.
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