Co-effects of graphene oxide sheets and single wall carbon nanotubes on mechanical properties of cement |
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| Institution: | 1. College of Mechanical and Electrical Engineering, Changchun University of Science and Technology, 7089 Weixing Road, Changchun 130012, China;2. Department of Materials Science and Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA;1. Beijing Key Laboratory of Green Building and Energy Efficiency Technology, Beijing College Engineering Research Centre of Engineering Structure and New Material, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;2. National Engineering Laboratory of Preparation Technology of Carbon Fiber, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;1. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China;2. Department of Civil Engineering, Qingdao Technological University (Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone), Qingdao, China;3. Department of Civil, Architectural and Environmental Engineering, Missouri University of Science and Technology, Rolla, MO, USA;1. Department of Materials Science and Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931-1295, USA;2. Department of electrical and Mechanical Engineering, Qiqihar Institute of Technology, Qiqihar, Heilongjiang, 161005, PR China;1. Centre for Sustainable Infrastructure, Faculty of Science, Engineering and Technology, Swinburne University of Technology, PO Box 218, Hawthorn, Victoria 3122, Australia;2. University of Baghdad, Faculty of Engineering, Civil Engineering Department, Baghdad, Iraq;3. Department of Civil Engineering, Monash University, Clayton, Victoria 3800, Australia |
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| Abstract: | The enhancement of mechanical properties of cement composites by a carbon nanomaterial is an important topic. However, the co-effect of two (or more) carbon nanomaterials on the mechanical properties of cement has not been explored. In this paper, it was found that the mixture of graphene oxide (GO) sheets and single-walled carbon nanotubes (SWCNTs) exhibited an excellent co-effect, leading to 72.7% increase in bending strength of cement, which is much larger than the strength enhancements of 51.2% by GO and 26.3% by SWCNTs. Furthermore, it was demonstrated that the bending strength of cement composite materials with GO and SWCNTs is proportional to the sizes of crystal SiO2 particles. |
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| Keywords: | Nanostructures X-ray diffraction Mechanical properties |
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