Author:
Hu Lingling,Chen Zhen,Hu Jun
Abstract
The development of sustainability and high toughness in cement-based composites with polypropylene (PP) fiber is becoming increasingly important for future buildings, while CO2-curing treatment at early ages is precisely a promising technique for it. The present work reported the carbon sequestration and the mechanical property variations of different cement-based composites with and without PP fiber, 10% silica fume, and varied w/b ratios of 0.25 and 0.18. Carbonation–hydration kinetics of CO2-cured cement-based composites was also focused on. It was found that PP fiber promoted the CO2 uptake of cement-based composites with the utilization of two separate evaluation methods; the maximum CO2 uptake reached almost 11.0% in B-2 samples. The samples with enhanced carbon sequestration showed an obvious colorless area from the outside surface extending to the center. A much more drastic carbonation heat flow and heat release behavior than the subsequent hydration heat was also revealed in cement-based composites with CO2-curing treatment. Hence, this study provides an alternative way of using CO2-curing treatment on PP-fiber-reinforced cement-based composites to develop sustainable cement-based composites in the future.
Funder
Wuhan Science and Technology Bureau
State Key Laboratory of High Performance Civil Engineering Materials
Science and Technology Department of Hubei Province
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
Cited by
3 articles.
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