Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fundamental Study on Mechanical Performances of FRCC Using Polypropylene Nanofibers
In recent years, research on nanomaterials has been extensively conducted in various areas, including construction fields. The use of nanofibers, such as carbon nanotubes (CNT) and cellulose nanofibers (CNF), has also been proposed for fiber-reinforced concrete and fiber-reinforced cementitious composites (FRCC). The excellent mechanical properties of nanofibers are very potential to improve the FRCC performances. In many previous works, remarkable results have already been reported on the use of nanofibers in FRCC.However, the use of high-performance nanofibers requires high manufacturing costs. Therefore, it cannot be easily introduced into the concrete that is known as an inexpensive building material. In this study, the application of polypropylene (PP) nanofibers is proposed. The PP nanofibers have nano-order diameters and can be provided in mass production at a low cost. Here, the mechanical performances of FRCC using the PP nanofibers and the combinations with other fibers were investigated. As a result, although the simple mixing procedures had problems with dispersibility, the PP nanofibers can be dispersed well using appropriate admixtures. It has been confirmed that the well dispersed PP nanofibers are improving the mechanical properties of FRCC. In addition, the combination use of PP nanofibers and polyvinyl alcohol (PVA) fibers enhancing the ductility.
Fundamental Study on Mechanical Performances of FRCC Using Polypropylene Nanofibers
In recent years, research on nanomaterials has been extensively conducted in various areas, including construction fields. The use of nanofibers, such as carbon nanotubes (CNT) and cellulose nanofibers (CNF), has also been proposed for fiber-reinforced concrete and fiber-reinforced cementitious composites (FRCC). The excellent mechanical properties of nanofibers are very potential to improve the FRCC performances. In many previous works, remarkable results have already been reported on the use of nanofibers in FRCC.However, the use of high-performance nanofibers requires high manufacturing costs. Therefore, it cannot be easily introduced into the concrete that is known as an inexpensive building material. In this study, the application of polypropylene (PP) nanofibers is proposed. The PP nanofibers have nano-order diameters and can be provided in mass production at a low cost. Here, the mechanical performances of FRCC using the PP nanofibers and the combinations with other fibers were investigated. As a result, although the simple mixing procedures had problems with dispersibility, the PP nanofibers can be dispersed well using appropriate admixtures. It has been confirmed that the well dispersed PP nanofibers are improving the mechanical properties of FRCC. In addition, the combination use of PP nanofibers and polyvinyl alcohol (PVA) fibers enhancing the ductility.
Fundamental Study on Mechanical Performances of FRCC Using Polypropylene Nanofibers
RILEM Bookseries
Kunieda, Minoru (Herausgeber:in) / Kanakubo, Toshiyuki (Herausgeber:in) / Kanda, Tetsushi (Herausgeber:in) / Kobayashi, Koichi (Herausgeber:in) / Kanri, Miyu (Autor:in) / Nishiwaki, Tomoya (Autor:in) / Kitatsuji, Masafumi (Autor:in)
International Conference on Strain-Hardening Cement-Based Composites ; 2022
01.02.2023
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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