Abstract
Mechanically recycled glass fiber reinforced polymer (GFRP) has increasingly been reused in concrete, while its physicochemical properties need to be tailored for achieving effective reinforcement. To this end, fibers were carefully separated from three sources of GFRP recyclates via a process consisting of vibratory screening, followed by hydraulic selection and aerodynamic separation. The influence of the elaborate fiber selection on the physical-mechanical properties and microstructures of mortars were investigated with mechanical testing, X-ray micro-CT and Scanning Electron Microscopy (SEM) analysis. Results indicated that the fine selected GFRP fibers apparently enhanced the mechanical properties and reduced the shrinkage of mortars, with the highest compressive and flexural strength of 47.3 MPa and 9.83 MPa, respectively. The reinforcement mechanisms were mainly attributed to (i) the porosity of mortar ameliorated by the modified fiber uniformity; (ii) the increased fiber-cement adhesion thanks to the rough and hydrophilic surface of recycled GFRP fibers; and (iii) the protective resin coating of recycled GFRP fibers against alkali corrosion.
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.
