Residual Mechanical Properties of BPRCC under Cyclic Environmental Conditions
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 10
Abstract
In this study, the performance of basalt pellet–reinforced cementitious composites (BPRCC) was evaluated after exposure to harsh conditions. The exposure consisted of consecutive 300 freeze–thaw cycles followed by 75 wet–dry cycles simulating successive winter and summer seasons. The mixtures, incorporated general-use cement, slag, and nanosilica, and reinforced with either the recently developed basalt fiber pellets (BP)—basalt fiber strands coated by a polymeric resin—or steel fibers. The resilience of composites was assessed by internal damage, residual compressive and flexural strengths, as well as their compatibility with base/parent concrete, when used in a layered system with normal concrete. The presence of BP at a dosage of 4.5% or 6.9% in the nanomodified cementitious composites effectively discounted the rate of deterioration, resulting in lower reductions in stiffness, compressive and flexural capacities, as well as toughness after the exposure to aggravated environmental conditions. Hence, such composite may present a promising option for construction of exposed infrastructural elements.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The authors wish to express their gratitude and sincere appreciation for the financial support received from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the University of Manitoba Graduate Fellowship. In addition, the assistance received from the technical staff of the McQuade Heavy Structures Laboratory at the University of Manitoba is acknowledged.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 10 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jan 19, 2021
Accepted: Mar 8, 2021
Published online: Jul 31, 2021
Published in print: Oct 1, 2021
Discussion open until: Dec 31, 2021
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