Author : R.B.Khadiranaikar 1
Date of Publication :3rd May 2021
Abstract: The contemporary building sector intensively depends on the cement based material. As compared to the previous times, the demand for the progress of the new infrastructure is at hike; moreover it demands the construction of efficient, sustainable, and durable building materials. Based on the worldwide screening report, it is apparent that Nanotechnology and Nano materials can intensively affect the material at nano scale which in turn effects the properties at micro and macro level leading to development of cementious composites with improved properties such as mechanical performance, durableness, resistance to brittle failure, ability to resist crack, etc. In the present experimental work a set of cementious composites were incorporated with MWCNTS and their percentage was fixed to 0.75% by weight of cement, while a set of specimens were incorporated with 3wt% Al2O3 nanopowder and a composition with combination of both 0.75wt% of cement MWCNTs and 3wt% of cement Al2O3 nanopowder. Dispersion of both MWCNTS and Al2O3 nanopowder was done using ultrasonic sonicator. These specimens were tested for compression and flexure and their mechanical properties such as Compressive strength, Flexural strength, Toughness and Ductility, Indirect tensile strength were evaluated and these properties were compared with that of plain cement control beams. Microstructure of composite was also assessed using SEM (Scanning Electron Microscopy).From the study it was concluded that there was improvement in mechanical properties and microstructure of the composites.
Reference :
-
- L.P. Singh , S.R. Karade, S.K. Bhattacharyya, M.M. Yusuf, S. Ahalawat “Beneficial role of nanosilica in cement based materials – A review “CSIR – Central Building Research Institute, Roorkee 2,47(2013):1067-1077.
- Byung Wan Jo , Sumit Chakraborty, Ki Heon Kim Investigation on the effectiveness of chemically synthesized nano cement in controlling the physical and mechanical performances of concrete Department of Civil and Environmental Engineering, Hanyang University, Seoul 133791, South Korea. Construction and Building Materials 70 (2014) 1–8
- A. M. Hunashyal, S.J Lohitha, S. S. Quadri, and N. R. Banapurmath “Experimental Investigation of the effect of MWCNTs and CFs on behaviour of plain cement beams”, Karnataka, India.IES Journal Part A:Civil and Structural engineering,vol.4,No1,Feb 2011,29-36
- A.M. Hunashyal,Sagar V. Tippa,S. S. Quadri, and N. R. Banapurmath“Experimental Investigation of the effect of MWCNTs and CFs on behaviour of plain cement mortar composite round bars under direct tension” ,Advances in materials,2014
- Morteza Bastami Performance of nano-silica modified High strength at elevated trmperatures. Construction and Building Materials 68:402– 408 · October 2014 with 312 Reads DOI: 10.1016/j.conbuildmat.2014.06.026
- Zhidan Rong Effect of nano-SiO2 on mechanical and microstructure of UHPC composites Nanjing 21189, China.cement and concrete composites.56(2015)25- 31
- Mostafa Jalal Mostafa Jalal a, Mojtaba Fathi b, Mohammad Farzad c Effects of fly ash and TiO 2 nanoparticles on rheological, mechanical, microstructural and thermal properties of high strength self compacting concrete.Materials and design 34(2012)389-400
- Gengying properties of high volume fly ash concrete incorporating nano-sio2.Department of civil engineering shanto uuniversity china.Cement and concrete research 34(2004) 1043-1049
- Mostafa Khanzadi Influence of Nano-Silica Particles on Mechanical Properties and Permeability of Concrete Department of Civil Engineering, Science & Technology University of Iran.second international conference on sustainable construction material and technology
- Mahmoud Foroutan Naddafi Mahmoud Foroutan Naddafi “Preliminary study on the water permeability and concrete structures with nano particles sio2 (silica particles)” Department of Engineering, Payame Noor University, Tehran, Iran.E.M.T 2(6)2014;419-424