Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nano-modified Slag-based Cementitious Composites Reinforced with Multi-scale Fiber Systems
This study responds to the need for improving the overall performance of concrete infrastructure to achieve longer service life, fewer cycles of repair, and reduced life-cycle costs. Hence, novel high-performance fiber-reinforced cementitious composites were developed using various types of nano-materials and fibers. The composites developed in this study comprised high content (50%) slag by mass of the base binder (700 kg/m3) as well as nano-silica or nano-crystalline cellulose (produced in Canada). In addition, nano-fibrillated cellulose (NFC), produced in Canada, and a novel form of basalt fiber strands enclosed by polymeric resins called basalt fiber pellets (BFP), representing nano-/micro- and macro-fibers, respectively, were incorporated in the composites. The composites were assessed in terms of early- and late-age compressive strength, flexural performance, and resistance to freezing and thawing cycles. Generally, the BFP reduced the compressive strength of the composites, but the co-existence of nano-materials and NFC alleviated this trend. Furthermore, all nano-modified composites with multi-scale fibers showed notable improvement in terms of flexural performance (post-cracking behavior, residual strength, and toughness) and resistance to frost action. Thus, they can be used in a suite of infrastructural applications requiring high ductility in cold regions.
Nano-modified Slag-based Cementitious Composites Reinforced with Multi-scale Fiber Systems
This study responds to the need for improving the overall performance of concrete infrastructure to achieve longer service life, fewer cycles of repair, and reduced life-cycle costs. Hence, novel high-performance fiber-reinforced cementitious composites were developed using various types of nano-materials and fibers. The composites developed in this study comprised high content (50%) slag by mass of the base binder (700 kg/m3) as well as nano-silica or nano-crystalline cellulose (produced in Canada). In addition, nano-fibrillated cellulose (NFC), produced in Canada, and a novel form of basalt fiber strands enclosed by polymeric resins called basalt fiber pellets (BFP), representing nano-/micro- and macro-fibers, respectively, were incorporated in the composites. The composites were assessed in terms of early- and late-age compressive strength, flexural performance, and resistance to freezing and thawing cycles. Generally, the BFP reduced the compressive strength of the composites, but the co-existence of nano-materials and NFC alleviated this trend. Furthermore, all nano-modified composites with multi-scale fibers showed notable improvement in terms of flexural performance (post-cracking behavior, residual strength, and toughness) and resistance to frost action. Thus, they can be used in a suite of infrastructural applications requiring high ductility in cold regions.
Nano-modified Slag-based Cementitious Composites Reinforced with Multi-scale Fiber Systems
Lecture Notes in Civil Engineering
Gupta, Rishi (Herausgeber:in) / Sun, Min (Herausgeber:in) / Brzev, Svetlana (Herausgeber:in) / Alam, M. Shahria (Herausgeber:in) / Ng, Kelvin Tsun Wai (Herausgeber:in) / Li, Jianbing (Herausgeber:in) / El Damatty, Ashraf (Herausgeber:in) / Lim, Clark (Herausgeber:in) / Hosny, O. M. (Autor:in) / Yasien, A. M. (Autor:in)
Canadian Society of Civil Engineering Annual Conference ; 2022 ; Whistler, BC, BC, Canada
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 ; Kapitel: 61 ; 871-883
13.01.2024
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Basalt fiber pellets , Nano-fibrillated cellulose , Nano-crystalline cellulose , Nano-modified cementitious composites , Post-cracking behavior Engineering , Building Construction and Design , Geoengineering, Foundations, Hydraulics , Transportation Technology and Traffic Engineering , Environment, general
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