Fiber-reinforcement and its effects on the mechanical properties of high-workability concretes manufactured with slag as aggregate and binder
No Thumbnail Available
Identifiers
Publication date
2021-11
Advisors
Journal Title
Journal ISSN
Volume Title
Publisher
Citations
Export
Abstract
The feasibility of manufacturing fiber-reinforced concretes of high workability through additions of high volumes of electric arc furnace steel slag is evaluated in this paper, using sustainable binders with ground granulated blast furnace slag and ladle furnace slag as a supplementary cementitious material. An extensive experimental plan is developed to test four (self-compacting and pumpable) concrete mixtures, some reinforced with 0.5% vol. of (metallic or synthetic) fibers, in both the fresh and the hardened state. Very specific mechanical aspects are examined, such as the evaluation of both longitudinal and transversal stress-strain compressive behavior, and the assessment of direct tensile strength through the “dog-bone” test. The results of testing this sustainable concrete design yielded suitable mechanical strengths, and good toughness, ductility and impact strength, among other properties. Good adhesion between the fibers and the cementitious matrix was also evident from the fiber pull-out test results. Finally, the overall results confirmed that the use of electric arc furnace steel slag can make a real contribution to construction-sector sustainability and that the mechanical behavior of these novel concretes meets the basic design requirements for use in real structures.
Description
Publisher Copyright: © 2021 Elsevier Ltd
Keywords
Dog-bone test , Fiber-reinforced high-workability concrete , Fracture toughness , Slag Aggregate and binder , Stress-strain behavior , Civil and Structural Engineering , Architecture , Building and Construction , Safety, Risk, Reliability and Quality , Mechanics of Materials , SDG 9 - Industry, Innovation, and Infrastructure , SDG 12 - Responsible Consumption and Production
Type
Citation
Ortega-López , V , García-Llona , A , Revilla-Cuesta , V , Santamaría , A & San-José , J T 2021 , ' Fiber-reinforcement and its effects on the mechanical properties of high-workability concretes manufactured with slag as aggregate and binder ' , Journal of Building Engineering , vol. 43 , 102548 . https://doi.org/10.1016/j.jobe.2021.102548