کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
253447 | 503003 | 2011 | 7 صفحه PDF | دانلود رایگان |

This work presents an experimental study of thermal conductivity, compressive strength, first crack strength and ductility indices of recycled PET fiber-reinforced concrete (RPETFRC). We examine PET filaments industrially extruded from recycled PET bottle flakes with different mechanical properties and profiles. On considering a volumetric fiber dosage at 1%, we observe marked improvements in thermal resistance, mechanical strengths and ductility of RPETFRC, as compared to plain concrete. A comparative study with earlier literature results indicates that RPETFRC is also highly competitive over polypropylene-fiber-reinforced concrete in terms of compressive strength and fracture toughness.
Force (F) vs crack tip opening displacement (CTODm) responses observed for plain concrete (UNRC), different kinds of recycled PET fiber-reinforced concrete (RPETFRC/a,b,c), and polypropylene-fiber-reinforced concrete (PPFRC).Collapse configuration of a RPETFRC/a specimen undergoing a four-point bending test. The bridging effect played by fibers (PET/a) in the regime of large deflections is clearly visible.Figure optionsDownload as PowerPoint slideHighlights
► Thermal conductivity and mechanical properties of RPET fiber reinforced concretes are measured.
► Industrially extruded RPET monofilaments at 1% volumetric content are employed.
► Marked increases in thermal resistance and mechanical strengths are observed in RPETFRC over UNRC.
► The addition of RPET fibers to the mix design produces significantly large ductility of concrete.
► RPETFRC is competitive over polypropylene-FRC in terms of strength and ductility enhancements.
Journal: Composite Structures - Volume 93, Issue 9, August 2011, Pages 2368–2374