Tensile and flexural strength cracking behavior of geopolymer composite reinforced with hybrid fibers

MARAŞ M. M.

ARABIAN JOURNAL OF GEOSCIENCES, cilt.14, sa.22, 2021 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 22
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s12517-021-08579-x
  • Dergi Adı: ARABIAN JOURNAL OF GEOSCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aquatic Science & Fisheries Abstracts (ASFA), Geobase, INSPEC
  • Anahtar Kelimeler: Geopolymer, Hybrid fiber, Flexural, Tensile, Composite, Failure, MECHANICAL-PROPERTIES, CEMENTITIOUS COMPOSITES, BASALT FIBERS, STEEL FIBER, PERFORMANCE, FRACTURE, STRAIN, POROSIMETRY, RESISTANCE, TOUGHNESS
  • İnönü Üniversitesi Adresli: Evet

Özet

Geopolymer composites are amorphous aluminosilicates that result from the polycondensation of alkali-activated inorganic compounds. The alkali-activated materials display many important advantages over conventional materials owing to high compressive strength, low carbon footprint, and eco-friendliness. This study investigated the effect of hybridization of polypropylene (PP), glass, and polyamide (PA) as reinforcing fiber for the alkali-activated composites. The results demonstrated that the compressive strength of the M15 hybrid geopolymer hybrid sample was greater than its counterpart in the other matrices. While 1.75% PP fiber-reinforced geopolymer composite displayed ductile behavior, the capacity peak load point was lower than its PA fiber counterpart. Microstructure observation concerning images demonstrated no significant damage to hybrid fibers in the alkali-activated materials. Besides, a high amount of geopolymer composite matrix was observed covering the surface of the PP fiber, which implied high-strength friction and bonds that could resist either fiber pullout or failure.