A B S T R A C T R I~ S U M I~The casting of fiber-reinforced concrete presents greater handling difficulty and requires more deliberate planning and workmanship than conventional concrete without fibers. The feasibility of producing fiber-reinforced, self-consolidating concrete (FR-SCC) that can be cast into place with minimum or no consolidation was investigated. Sixteen mixtures made with steel fibers measuring 38 mm in length used at dosages of 0, 0.5, and 1%, by volume, were investigated. The mixtures were prepared with various types of binary and ternary cementitious materials and W/CM of 0.37 to 0.45. The higher W/CM mixtures incorporated a viscosity-enhancing agent to reduce the risk of segregation. Concrete mixtures with slump flow consistencies of 650 and 530 mm were prepared, with the latter representing a highly flowable concrete that would require some consolidation. The characteristics of these mixtures were compared to those of a conventional fiber-reinforced concrete with a targeted slump consistency of 200 mm. The mixtures were tested for rheological parameters using a concrete viscometer, for restricted deformability using the filling capacity and V-funnel flow tests, as well as for compressive strength and flexural toughness. The paper evaluates the suitability of using the above workability tests to assess restricted deformability of FR-SCC and discusses the effect of fiber volume, mixture proportioning, and consistency on concrete properties.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.