POST-ELASTIC DEFORMATION CHARACTERISTICS OF HYBRID FIBRE REINFORCED CONCRETE COMPOSITES

SIVAKUMAR A; MAJED ALSUBIH

doi:10.1590/1679-78255851

POST-ELASTIC DEFORMATION CHARACTERISTICS OF HYBRID FIBRE REINFORCED CONCRETE COMPOSITES

Authors

SIVAKUMAR A DEPARTMENT OF CIVIL ENGINEERING, COLLEGE OF ENGINEERING, KING KHALID UNIVERSITY, ABHA, KINGDOM OF SAUDI ARABIA HTTPS://ORCID.ORG/0000-0002-2778-3506
MAJED ALSUBIH DEPARTMENT OF CIVIL ENGINEERING, COLLEGE OF ENGINEERING, KING KHALID UNIVERSITY, ABHA, KINGDOM OF SAUDI ARABIA HTTPS://ORCID.ORG/0000-0001-8226-1682

DOI:

https://doi.org/10.1590/1679-78255851

Abstract

THE PRESENT STUDY WAS FOCUSED ON EVALUATING THE STRENGTH AND FAILURE PROPERTIES OF HYBRID MICRO-FIBRE CONCRETES CONTAINING MICRO BRASS AND STEEL FIBRE ADDITIONS. EXPERIMENTAL TESTS WERE CONDUCTED ON DIFFERENT HYBRID FIBRE CONCRETES CONTAINING ALIGNED FIBRES IN THE DIRECTION OF BEAM AXIS AND THE RELATIVE MECHANICAL PERFORMANCE WAS COMPARED TO RANDOMLY DISTRIBUTED FIBRE ADDITIONS IN CONCRETE. STATISTICAL ANALYSIS ON THE TEST RESULTS WERE USED TO COMPARE THE DISTINCTIVE PERFORMANCE OF FIBRE COMBINATIONS AT DIFFERENT DOSAGE LEVELS. THE EFFECT OF BINDER TO AGGREGATE RATIO AND THE VARYING PROPORTIONS OF FIBRE COMBINATIONS ON THE CONCRETE PROPERTIES WERE ASSESSED IN TERMS OF FLEXURAL STRENGTH, FRACTURE TOUGHNESS AND DUCTILITY. THE STATISTICAL ANALYSIS OF THE EXPERIMENTAL RESULTS INDICATED THE DUAL ACTION OF HYBRID FIBRE COMBINATIONS IN IMPROVING THE COMPOSITE PROPERTIES AND THE CRACK ARRESTING MECHANISM OF FIBRES AT VARYING STAGES OF LOADING AS OBSERVED FROM THE LOAD-CMOD CURVES. AMONG THE VARIOUS CONCRETES TESTED, THE HYBRID FIBRE CONCRETES CONTAINING STEEL-BRASS FIBRES DOSAGES AT 1.0% AND 0.03%VF PERFORMED CONSISTENTLY IN OVERALL MECHANICAL PROPERTIES.

Downloads

Published

2019-11-11

Issue

Vol. 17 No. 1 (2020)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY] that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).