Shear Strength of Steel Fiber-Reinforced Recycled Aggregates Concrete Deep Beams

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

– The effectiveness of steel fibers to improve the shear behavior of recycled aggregates concrete deep beams is investigated experimentally in this paper. Three large-scale concrete deep beams with a shear span-to-depth ratio (a/h) of 1.6 were tested. Two beams had a 100% recycled concrete aggregates (RCA) replacement ratio whereas one beam was made with natural aggregates (NA) to act as a benchmark. One of the RCA beams included steel fibers at a volume fraction of 1%. The use of a 100% RCA significantly impaired the beam stiffness, reduced the cracking load by 25%, and decreased the shear strength by 5%. The use of steel fibers in a RCA beam delayed initiation of shear cracks, improved the beam stiffness, and fully restored the original shear capacity.

Original languageEnglish
Title of host publicationProceedings of the 7th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2022
EditorsHany El Naggar, Joaquim Barros, Paulo Cachim
PublisherAvestia Publishing
ISBN (Print)9781927877999
DOIs
Publication statusPublished - 2022
Externally publishedYes
Event7th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2022 - Virtual, Online
Duration: Apr 10 2022Apr 12 2022

Publication series

NameWorld Congress on Civil, Structural, and Environmental Engineering
ISSN (Electronic)2371-5294

Conference

Conference7th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2022
CityVirtual, Online
Period4/10/224/12/22

Keywords

  • deep beams
  • recycled concrete aggregates
  • shear
  • steel fibers

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Engineering

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