Abstract
This paper presents the experimental results obtained with the non-contact three-dimensional deformation measuring system–ARAMIS and finite element analysis performed using ANSYS of three slabs made of high-performance concrete (HPC) and hybrid (steel/ST and polypropylene/PP) fibre reinforced high-performance concrete (FRHPC). The research was performed on reinforced concrete (RC) slabs with a web mesh of ϕ8 mm bars. All the slabs had an identical amount of steel bars and differed by the fibre volume content. The main objective of the research was to determine the impact of adding polypropylene and steel fibres on the carrying capacity and ductility of HPC slabs. Analysis of the results was conducted based on load–deflection curves, crack distribution, vertical displacements and strains. The research findings indicate that fibres may improve peak strength. The presence of PP and ST hybrid fibres in HPC restricted the propagation of cracks. The energy absorption capacity as well as the ductility index of HPC can be raised by adding hybrid fibres. A comparison of the experimental test results with the nonlinear finite element analysis is made. The numerical results concurred well with the experimental data. The research results indicate that non-contact measurement of deformation is an effective tool for monitoring crushing in FRHPC slabs.
Highlights
Concrete is a commonly used building material
The elastic modulus of synthetic fibres changes the properties of fibre reinforced high-performance concrete (FRHPC) when combined with different fibres
Decreases in the ultimate deflection and peak load were slabs at upper deflection was observed as more cracks developed
Summary
Concrete is a commonly used building material. In general it is weak in tension and brittle under low confining pressure. High-performance concrete (HPC) has better workability, mechanical properties and durability [6,7]. Fibres can be added to concrete to fabricate material with enhanced tensile strength, fracture toughness, ductility, resistance under fatigue and impact loading, as well as improved durability properties [8,9,10,11,12,13,14]. The polypropylene (PP) fibres added in HPC form channels for pressure to escape from the concrete, which prevents cracking and spalling [18]. Other kinds of fibres are not commonly used
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
