Abstract
In this research, the dynamic behaviors of steel fibre in fresh Ultra-High Performance Concrete (UHPC) with different rheological characteristics are investigated. Except the experimental studies, the smoothed particle hydrodynamics (SPH) is employed to simulate the motion of steel fibres in UHPC slurry, while the effects of different boundary conditions and related mechanism are analyzed. The obtained results show that a new fibre settlement curve can be proposed and divided into three periods in UHPC cementitious paste, in which the buoyancy and resistance have been carefully clarified. Besides, it is observed that vibration conditions can significantly change the particle contact angle, while the shear-thinning/thickening could affect the apparent viscosity, both of which may disturb the settlement of steel fibres in UHPC. In general, this paper systematically reveals and summarizes a new law of fibre settlement in UHPC slurry, which is beneficial for a deeper understanding and controlling of steel fibre dynamic performance during casting process.
Sign-in/Register to access full text options 
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.
