Shear behavior of two-span fiber reinforced concrete beams

Julita Krassowska , Marta Kosior-Kazberuk , Piotr Berkowski

Abstract

The presented study was conducted to assess the shear capacity and the mechanical behavior of fiber reinforced concrete two-span beams in a five-point bending test. Experimental research was focused on observing changes in the behavior of tested elements depending on the amount of shear reinforcement (stirrups) and the fiber type used. The beams had varied stirrup spacing and two sorts of fibers were used as dispersed reinforcement. The steel fiber content was 78.5 kg/m3 and the basalt fiber content was 5.0 kg/m3. Concrete beams without addition of fibers were also examined as reference ones. The effectiveness of both sorts of fibers as shear reinforcement was assessed on the basis of strain development and crack pattern analysis. The digital image correlation technique was used to monitor the development of cracks around the central support of beams. It was shown that fibers control the cracking process and deformations in reinforced concrete beams and they can be effectively used as additional or the only shear reinforcement. The results of shear capacity obtained in the experiment were also compared with the shear capacity calculated according to current design approaches. This analysis has shown that fibers enhance the ultimate shear strength of reinforced concrete beams.
Author Julita Krassowska (FCEE / DBSA)
Julita Krassowska,,
- Department of Building Structures and Architecture
, Marta Kosior-Kazberuk (FCEE / DBSA)
Marta Kosior-Kazberuk,,
- Department of Building Structures and Architecture
, Piotr Berkowski
Piotr Berkowski,,
-
Journal seriesArchives of Civil and Mechanical Engineering, ISSN 1644-9665, e-ISSN 2083-3318, (N/A 140 pkt)
Issue year2019
Vol19
No4
Pages1442-1457
Publication size in sheets0.75
Keywords in Englishtwo-span beam, shear behavior, fiber reinforced concrete, steel fiber, basalt fiber
ASJC Classification2205 Civil and Structural Engineering; 2210 Mechanical Engineering
DOIDOI:10.1016/j.acme.2019.09.005
URL https://www.sciencedirect.com/science/article/pii/S1644966519301001
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; ; with publication
Score (nominal)140
Score sourcejournalList
ScoreBUT score = 36.0, 28-12-2018, manual
Ministerial score = 140.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 2.064; WoS Impact Factor: 2018 = 2.846 (2) - 2018=2.805 (5)
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