Torsional and cracking characteristics of steel fiber-reinforced oil palm shell lightweight concrete
Document Type
Article
Publication Date
1-1-2016
Abstract
The study presents the investigations of the torsional behavior and crack resistance of a sustainable lightweight oil palm shell (OPS) concrete. In the comparison between the OPS concrete (OPSC) and normal weight concrete (NWC), the torsional failure of the NWC was sudden and brittle, while the OPSC exhibited post-cracking behavior. The second part of the study examines the effect of steel fibers of 0.25-1.00% in the OPSC to produce OPS fiber-reinforced concrete (OPSFRC). Improved mechanical properties and reduced brittleness were reported in the OPSFRC mixes. The addition of 1% steel fibers in the OPSC-100 mix produced the highest compressive and flexural strengths of 47 MPa and 8.2 MPa, respectively. The steel fibers up to 1% enhanced the ultimate torque, torsional toughness, and twist at failure of the OPSFRC specimens by 60%, 1000%, and 550%, respectively. The addition of steel fibers significantly improved the crack resistance of the OPSFRC specimens.
Keywords
Fiber-reinforced concrete, Lightweight concrete, Oil palm shell, Steel fiber, Torsion, Cracking resistance, Mechanical properties
Divisions
sch_civ
Funders
University of Malaya Research Grant (UMRG) RP018-2012B: Development of Geo-polymer Concrete for Structural Application
Publication Title
Journal of Composite Materials
Volume
50
Issue
1
Publisher
SAGE Publications (UK and US)