Effect of fibre type and utilisation rate on dimensional stability and frost resistance of pavement mortar mixture

Kaya Y., Biricik Ö., Bayqra S. H., Mardani A.

INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING, cilt.24, sa.1, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 1
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1080/10298436.2022.2154351
  • Dergi Adı: INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Dimensional stability properties, drying-shrinkage, alkali silica reaction (ASR), sulphate attack, fibrous cementitious system, POLYPROPYLENE FIBERS, SYNTHETIC-FIBER, MECHANICAL-PROPERTIES, DURABILITY PROPERTIES, BASALT FIBER, STEEL FIBER, FLY-ASH, DRYING SHRINKAGE, SULFATE ATTACK, FREEZE-THAW
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In this study the effect of fiber type and utilization ratio on the dimensional stability and durability properties of pavement mortar mixtures was investigated. Three different fibers that are 12 mm long polypropylene, polyamide, and basalt fiber were used at a ratio of 0.25%, 0.50%, 0.75%, and 1% of their total volume. Drying-shrinkage, alkali-silica reaction (ASR), sulfate, freeze-thaw, and abrasion resistance of the mixtures were investigated. The findings to emerge from this study are as in the following: first, fiber addition prevented crack growth due to drying shrinkage of cementitious systems. Second, mixtures containing fiber showed higher performance in ASR and freeze-thaw whereas they underperformed in terms of sulfate resistance. These results could be attributed to a dual mechanism; on the one hand, the use of fiber is considered to create an additional void for the products that have the potential to form expansion to escape. On the other hand, the permeability of the mixtures increases as the void volume does due to the use of fiber. The former mechanism is considered to be predominant in ASR and freeze-thaw states. Specifically, mixtures containing basalt fiber with the highest modulus of elasticity outperformed in all properties.