Tension stiffening behavior of self compacting high strength fiber reinforced concrete incorporating river gravels

Marco Antonio Silva, Marco Pepe, Michele Pfeil, Barzin Mobasher, Romildo Dias Toledo-Filho

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

Abstract

This study proposes a comprehensive analysis on the structural performance of reinforced Self Compacting High Strength Fiber Reinforced Concrete members. Particularly, it summarizes the results of an experimental investigation aimed at analyzing the tension stiffening behavior of concrete mixtures produced with different kinds of natural aggregates: Crushed granite and two types of amazon river gravels (derived from two different Brazilian regions). The mixtures were proportioned in order to achieve 60 MPa of compressive strength and, moreover, beyond three plain concrete mixtures, 35 mm length steel fibers were added to these mixtures, as spread reinforcing element, in volumetric fractions equal to 0.5% and 1.0%. The results derived from this type of test furnish a comprehensive analysis on the crack formation and propagation on concrete elements as well as distributed cracking mechanisms. The results indicate that the adherence between the steel bar and the concrete is not affected by the presence of the river gravels and that the fiber reinforcement controls crack width leading to a great number of cracks and, this effect is more pronounced for higher volume fractions.

Original languageEnglish (US)
Title of host publicationHigh Tech Concrete
Subtitle of host publicationWhere Technology and Engineering Meet - Proceedings of the 2017 fib Symposium, 2017
EditorsD.A. Hordijk, M. Lukovic
Publisherfib. The International Federation for Structural Concrete
Pages396-404
Number of pages9
ISBN (Print)9783319594705
DOIs
StatePublished - 2018
Externally publishedYes
EventInternational fib Symposium on High Tech Concrete: Where Technology and Engineering Meet, 2017 - Maastricht, Netherlands
Duration: Jun 12 2017Jun 14 2017

Publication series

Namefib Symposium
ISSN (Print)2617-4820

Conference

ConferenceInternational fib Symposium on High Tech Concrete: Where Technology and Engineering Meet, 2017
Country/TerritoryNetherlands
CityMaastricht
Period6/12/176/14/17

Keywords

  • Crack propagation
  • High strength concrete
  • Steel-concrete bond
  • Tension stiffening

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (miscellaneous)

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