Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.13091/1165
Title: | Nano-tailored multi-functional cementitious composites | Authors: | Öztürk, Oğuzhan Yıldırım, Gürkan Keskin, Ülkü Sultan Siad, Hocine Şahmaran, Mustafa |
Keywords: | Engineered Cementitious Composites (Eccs) Self-Healing Self-Sensing Nano-Silica (Ns) Carbon Nanotubes (Cnt) Self-Healing Capability Electrical-Properties High Volumes Fly-Ash Transport Permeability Performance Durability Strength Concrete |
Publisher: | ELSEVIER SCI LTD | Abstract: | This paper explores the effects of single and binary use of nano-additions on the self-sensing and self-healing efficiencies of cementitious composites in achieving a material that combines high mechanical and multifunctional performances. The researchers studied three nano-tailored cementitious compositions incorporating nano-silica (NS), multi-walled carbon nanotubes (CNT) and binary NS/CNT, as well as control composites prepared without nano-additions. The study included compressive strength testing on sound specimens and an evaluation of combined self-sensing/self-healing capabilities with electrical resistivity (ER) measurements conducted before and after preloading and during the self-healing recovery stage. Recovery rates were also evaluated via crack width measurements recorded by video microscope and compared to ER testing results. To account for different self-healing products, microstructural characterization was performed on healed cracks using scanning electron microscopy coupled with EDX (SEM/EDX) and thermo-gravimetric (TG/DTG) analyses. Results show that while the single use of CNT can promote self-sensing and self-healing properties, using binary NS/CNT can significantly enhance these performances. The density and amounts of C-S-H and CaCO3 in healed cracks increased with the addition of nano-materials, especially for the binary NS/CNT. | URI: | https://doi.org/10.1016/j.compositesb.2019.107670 https://hdl.handle.net/20.500.13091/1165 |
ISSN: | 1359-8368 1879-1069 |
Appears in Collections: | Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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1-s2.0-S135983681934404X-main.pdf Until 2030-01-01 | 3.89 MB | Adobe PDF | View/Open Request a copy |
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