NDLI: Development and application of microcapsule for cement hydration control

Content Provider	Springer Nature Link
Author	Choi, Young Cheol Cho, Young Keun Shin, Kyung Jun Kwon, Seung Jun
Copyright Year	2015
Abstract	When concrete is placed in extreme climates, quality control of concrete is so difficult that cracking due to hydration heat easily occur. In the paper, new encapsulation technique is developed for control of cement hydration reaction through encapsulation of chemical admixtures. Lithium carbonate (Li$_{2}$CO$_{3}$) as accelerator and tartaric acid (C$_{4}$H$_{6}$O$_{6}$) as retarder are respectively selected for core material. For wall material of microcapsule, acrylic resin, silicon monoxide, and starch is synthesized. Several tests including chemical shrinkage, setting time, compressive strength, and adiabatic temperature are performed for evaluating an effect of the invented microcapsule on cement hydration behavior. Through encapsulation of accelerator and retarder, cement hydration behaviors like setting time, strength, shrinkage, and hydration heat are reasonably controlled. The developed encapsulation technique can be applied for manufacturing high durable concrete in harsh environmental condition avoiding cracking.
Starting Page	282
Ending Page	292
Page Count	11
File Format	PDF
ISSN	12267988
Journal	KSCE Journal of Civil Engineering
Volume Number	20
Issue Number	1
e-ISSN	19763808
Language	English
Publisher	Korean Society of Civil Engineers
Publisher Date	2015-02-27
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	encapsulation chemical admixture hydration behavior durable concrete Civil Engineering Industrial Pollution Prevention Geotechnical Engineering & Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Civil and Structural Engineering

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