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Performance and properties of mortar mixed with nano-CuO and rice husk ash
Affiliation:1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, China;2. Department of Civil Engineering, University of Guilan, Rasht, Iran;3. Department of Civil Engineering, University of Birjand, Birjand, Iran;4. Department of Civil Engineering, Islamic Azad University-UAE Branch, Dubai, United Arab Emirates;1. Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany;2. Hokkaido University of Science, Department of Civil and Environmental Engineering, 4-1, 7-15, Maeda, Teine-ku, 006-8585 Sapporo, Japan;3. University of Applied Sciences Karlsruhe, Institute for Prevention in Construction, Moltkestr. 30, D-76133 Karlsruhe, Germany;1. Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, PR China;2. Department of Mechanical Engineering, University of South Florida, Tampa, FL 33620, USA;3. Center of Technology Research, Shenhua Guohua Electric Power Research Institute Co., LTD, PR China;1. Institute of Environmental Sciences, Bogazici University, 34342 Istanbul, Turkey;2. Environmental Engineering and Earth Science, Clemson University, Clemson, SC 29634, USA;1. Young Researchers and Elite Club, Sari Branch, Islamic Azad University, Sari, Iran;2. Department of Construction Engineering and Management, Tabari University of Babol, Iran;3. Department of Physics, University of Mazandaran, Babolsar, Iran;4. Department of Industrial Engineering, Babol Noshirvani University of Technology, Babol, Iran;5. Faculty of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran;1. Department of Physics, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand;2. Department of Chemistry, School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan;3. Applied Physics Research Laboratory, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;4. Advanced Cement-Based Materials Research Unit, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;1. Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, India;2. Department Civil Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, India;3. Centre for Advanced Concrete Research, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
Abstract:This paper presents an experimental study on a new mixture scheme of mortar. Unlike most of existing work, the present study investigates nano-CuO (NC), and its combined effects with cement replacement i.e., rice husk ash (RHA) on durability performance, as well as strength and permeability properties of mortars. Comprehensive observations of both the performance and properties improvements on RHA-containing mortar specimens were determined with the addition of NC. To this end, a series of tests for examining the strength both directly (compressive strength) and indirectly (Ultrasonic Pulse Velocity), electrical resistivity, chloride permeability, water absorption and microstructure characteristics (i.e., SEM micrographs, Mercury intrusion porosimetry (MIP) & capillary analyses) of mortar specimens were performed. A relationship between the Rapid chloride permeability test (RCPT) and electrical resistivity was also studied in order to recommend an alternative method for quality control in the presence of RHA and NC. Finally, a mixture scheme which provides relatively satisfactory properties improvement with positive environment credential is suggested.
Keywords:Nano-CuO (NC)  Rice husk ash (RHA)  Durability  Permeability  Microstructure  Electrical resistivity  Rapid chloride permeability test (RCPT)  Water absorption  Ultrasonic pulse velocity (UPV)  Mercury intrusion porosimetry (MIP)  Capillary water absorption
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