The effect of polypropylene, steel, and macro synthetic fibers on mechanical behavior of cementitious composites
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pontificia Univ Catolica Chile, Escuela Construccion Civil
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Incorporation of fibers in concrete has been an efficient technique to prevent crack propagation, thus improving ductility, durability, toughness and strength of concrete. In this context, a comprehensive experimental study has been conducted concerning the compressive and flexural strength of fiber reinforced concrete, through preparing nine concrete batches with polypropylene fibers, steel fibers and macro synthetic fibers; and the hybrid forms combining polypropylene (PP) and steel, polypropylene and macro synthetic fibers. Fiber inclusion in concrete caused slight variations in compres-sive strength. However, the flexural strength for all sample sets was significantly increased. The highest values of strength increase relative to control concrete were 60.67%, 42.45% and 27.05% incorporating steel, polypropylene and macro syn-thetic fibers, respectively. It was also noted that the higher aspect ratio of steel fibers resulted with better flexural perfor-mance, among the steel fiber reinforced concrete samples. Hybrid forms of polypropylene-steel and polypropylene-macro synthetic fibers achieved the highest flexural strength compared with samples including single type of fiber. In blended groups, utilization of polypropylene fibers with steel fibers and with macro synthetic fibers resulted with 69.81% and 78.99% of increase in flexural strength relative to control specimens, respectively.
Açıklama
Anahtar Kelimeler
Polypropylene Fibers, Steel Fibers, Synthetic Fibers, Concrete, Mechanical Properties
Kaynak
Revista De La Construccion
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
20
Sayı
3
