Engineering and Durability Properties of Self-Consolidating Concrete Incorporating Foamed Lightweight Aggregate
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 9
Abstract
This study investigates the engineering and durability properties of self-consolidating concrete (SCC) specimens that were produced using various types of foamed lightweight aggregate (FLWA). Further, the effects of FLWA on the engineering and durability properties of SCC are assessed on the basis of related international standards. All of the fresh SCC mixtures exhibited exceptional flowability with uniform composition. The use of surface-treated FLWA improved significantly the compressive strength and the dynamic elastic modulus of SCC and reduced the drying shrinkage at later ages. The lowest thermal conductivity of was achieved for SCC incorporating 80% fly ash (FA) and 20% ground blast furnace slag (GBFS) aggregate that produced with a foaming agent concentration of 7%. Furthermore, the electrical resistivity and the ultrasonic pulse velocity values for all of the 28-day specimens exceeded 20 kΩ-cm and , respectively, satisfying the minimum requirements of the referenced concrete durability indices. Finally, the 91-day passing charges for all specimens ranged between 1,500 and 566 C, indicating either low or very low chloride permeability.
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Acknowledgments
The authors would like to acknowledge the financial support of the National Science Council of Taiwan (Grant No. NSC101-2923-I-011-001-MY4).
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 9 • September 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Sep 10, 2015
Accepted: Dec 31, 2015
Published online: Mar 29, 2016
Discussion open until: Aug 29, 2016
Published in print: Sep 1, 2016
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