Influence of singular and binary nanomaterials on the physical, mechanical and durability properties of mortars subjected to elevated temperatures and freeze-thaw cycles

POLAT R., Qarluq A. W., KARAGÖL F.

CONSTRUCTION AND BUILDING MATERIALS, cilt.295, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 295
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.conbuildmat.2021.123608
  • Dergi Adı: CONSTRUCTION AND BUILDING MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, CAB Abstracts, Communication Abstracts, INSPEC, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Anahtar Kelimeler: Halloysite nano-clay, nano-CaO, nano-SiO2, Freeze-thaw, Elevated temperature, CEMENT-BASED COMPOSITES, NANO-PARTICLES, AUTOGENOUS SHRINKAGE, PORE STRUCTURE, FLY-ASH, CONCRETE, PERFORMANCE, NANO-SIO2, SILICA, STRENGTH
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this paper, the singular and binary nanomaterials (halloysite nano-clay, nano-CaO and nano-SiO2) as a part replacement of cement were used to enhance the properties of mortars subjected to the elevated temperatures and freeze-thaw cycles. The mechanical and physical tests of the mortar were examined. Moreover, the microstructures and pore volume of samples after freeze-thaw cycles were examined by Scanning Electron Microscopy (SEM) and Barrett-Joyner-Halenda (BJH) technique. As a result, the highest compressive strength has been obtained with 3% halloysite nano-clay after durability effects. For the binary mixtures, the highest compressive strength is related to nano-CaO (2.5%) + halloysite nano-clay (2.5%) after freeze-thaw cycles. At elevated temperatures, the strength loss of mortar with nanomaterials are usually lower than control samples. The strength loss of the combination of nanoCaO and nano-SiO2 after durability effects is lower than the others. (C) 2021 Elsevier Ltd. All rights reserved.