Carbonation Depth and Permeability of Quaternary Hybrid Fiber Concretes

AbstractConcrete structures are exposed to water throughout their service life. Nowadays, fiber-reinforced concrete is the most preferred concrete due to its superior mechanical properties. However, good mechanical properties alone cannot protect concrete against the environmental conditions it may...

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Bibliographic Details
Published in:Journal of materials in civil engineering 2022-09, Vol.34 (9)
Main Authors: Bankir, Muzeyyen Balcikanli, Sevim, Umur Korkut
Format: Article
Language:English
Subjects:
Building materials
Capillarity
Carbonation
Civil engineering
Concrete
Concrete aggregates
Concrete properties
Concrete structures
Electric arc furnaces
Fiber reinforced concretes
Fly ash
Glass fiber reinforced plastics
Hydrofluorocarbons
Mechanical properties
Permeability
Pulse rate
Reinforced concrete
Reinforcing steels
Service life
Steel fibers
Technical Papers
Water absorption
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Summary:AbstractConcrete structures are exposed to water throughout their service life. Nowadays, fiber-reinforced concrete is the most preferred concrete due to its superior mechanical properties. However, good mechanical properties alone cannot protect concrete against the environmental conditions it may encounter during its service life. In particular, water is an inevitable factor faced by concrete elements. In this study, the permeability properties of concrete produced with different combinations of four different fibers were investigated. Hybrid fiber concrete (HFC) was made using the central composite design method. Steel, glass fiber, synthetic, and polypropylene fibers were hybridized among themselves, and the aggregate and paste phases of concrete were hybridized with electric arc furnace slag aggregate (EAFS) and fly ash (FA), respectively. Ultrasonic pulse rate, rapid chloride permeability (RCP), capillary water absorption capacity, and carbonation depth (CD) of HFC were determined. Statistically significant and nonsignificant parameters for each response were determined. Simultaneous substitution of EAFS and FA reduced the capillarity coefficient and CD of HFC. The RCP of HFC depends mainly on two factors: binder dosage and steel fiber ratio. The most suitable fiber for reducing CD was glass fiber. The estimated RCP, ultrasonic pulse velocity (UPV), and capillary water absorption capacity (CWAC) results were compared with the control sample, and the results were 81%, 114%, and 86% of the control sample.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0004350