Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Spalling Prevention of Ultrahigh-Performance Concrete: Comparative Effectiveness of Polyethylene Terephthalate and Polypropylene Fibers
This work explored the feasibility and effectiveness of using recycled polyethylene terephthalate (PET) fibers as an alternative to conventional polypropylene (PP) fibers in preventing the thermal spalling of ultrahigh-performance concrete (UHPC). The effect of PET fibers of varying dosages and geometries on the spalling behaviors of UHPC subject to various heating regimes was studied. The results showed that the PET incorporation into UHPC can effectively prevent the occurrence of heat-induced cracking and spalling. However, compared with PP fibers, a higher dosage of PET fibers was required to eliminate the spalling risk of UHPC. The relatively low mitigation efficiency of PET fibers compared with PP fibers may be attributed to its higher melting temperature, which retarded the formation of interconnected channels. Nevertheless, the incorporation of PET and PP fibers increased the permeability of UHPC even before the heat treatments and fiber melting, which contributed to a reduced spalling propensity of the UHPC.
Spalling Prevention of Ultrahigh-Performance Concrete: Comparative Effectiveness of Polyethylene Terephthalate and Polypropylene Fibers
This work explored the feasibility and effectiveness of using recycled polyethylene terephthalate (PET) fibers as an alternative to conventional polypropylene (PP) fibers in preventing the thermal spalling of ultrahigh-performance concrete (UHPC). The effect of PET fibers of varying dosages and geometries on the spalling behaviors of UHPC subject to various heating regimes was studied. The results showed that the PET incorporation into UHPC can effectively prevent the occurrence of heat-induced cracking and spalling. However, compared with PP fibers, a higher dosage of PET fibers was required to eliminate the spalling risk of UHPC. The relatively low mitigation efficiency of PET fibers compared with PP fibers may be attributed to its higher melting temperature, which retarded the formation of interconnected channels. Nevertheless, the incorporation of PET and PP fibers increased the permeability of UHPC even before the heat treatments and fiber melting, which contributed to a reduced spalling propensity of the UHPC.
Spalling Prevention of Ultrahigh-Performance Concrete: Comparative Effectiveness of Polyethylene Terephthalate and Polypropylene Fibers
Cai, Rongjin (Autor:in) / Liu, Jin-Cheng (Autor:in) / Ye, Hailong (Autor:in)
23.09.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Concrete reinforced with polyethylene terephthalate fibers
| British Library Conference Proceedings | 2004
How do polypropylene fibers improve the spalling behavior of in-situ concrete?
| Tema Archiv | 2006
Polypropylene fibres control explosive spalling in high-performance concrete
| British Library Online Contents | 2004
Fibers, Percolation, and Spalling of High-Performance Concrete
| British Library Online Contents | 2000
How do polypropylene fibers improve the spalling behavior of in-situ concrete?
| British Library Online Contents | 2006