Development of Ultralightweight Cement Composites with Low Density and High-Specific Strength Using Hollow Glass Microspheres
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 6
Abstract
This paper investigated hollow glass microspheres (HGMs) on the density, mechanical properties, and durability of ultralightweight cement composites (ULCCs). The influences of HGMs on the microstructure developments of ULCCs were also studied. The results indicated that the ULCCs had a 1-day density ranging from 778 to and 28 days compressive strength ranging from 22.9 to 33.1 MPa. The density of ULCCs was decreased with the increasing amount of HGMs, while the mechanical properties were reduced accordingly. The newly developed ULCCs with an HGM-to-binder volume ratio of and water-to-binder of 0.58 has a 1-day density of and 28 days compressive strength of 22.9 MPa, whose specific strength was . Furthermore, the obtained ULCCs showed a good resistance to chloride ion penetration. The microstructure demonstrated that the pozzolanic reaction of HGMs resulted in denser hydration products, which exhibited beneficial impacts on the durability of ULCCs.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published paper.
Acknowledgments
This research was financially supported by National Key Research & Development Program of China (No. 2016YFB0707003).
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© 2021 American Society of Civil Engineers.
History
Received: Jul 14, 2020
Accepted: Nov 9, 2020
Published online: Mar 29, 2021
Published in print: Jun 1, 2021
Discussion open until: Aug 29, 2021
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