{"title":"Preparation and Physical Assessment of Portland Cement Base Composites Containing Nano Particles","authors":"Amir Mahmoudi","volume":99,"journal":"International Journal of Materials and Metallurgical Engineering","pagesStart":229,"pagesEnd":234,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10000567","abstract":"
In this research the effects of adding silica and
\r\nalumina nanoparticles on flow ability and compressive strength of
\r\ncementitious composites based on Portland cement were investigated.
\r\nIn the first stage, the rheological behavior of different samples
\r\ncontaining nanosilica, nanoalumina and polypropylene, polyvinyl
\r\nalcohol and polyethylene fibers were evaluated. With increasing of
\r\nnanoparticles in fresh samples, the slump flow diameter reduced.
\r\nFibers reduced the flow ability of the samples and viscosity
\r\nincreased. With increasing of the micro silica particles to cement
\r\nratio from 2\/1 to 2\/2, the slump flow diameter increased. By adding
\r\nsilica and alumina nanoparticles up to 3% and 2% respectively, the
\r\ncompressive strength increased and after decreased. Samples
\r\ncontaining silica nanoparticles and fibers had the highest compressive
\r\nstrength.<\/p>\r\n","references":"[1] Nazari, S. Riahi, Al2O3 nanoparticles in concrete and different curing\r\nmedia, Energy and Buildings, 43, 2011, 1480-1488.\r\n[2] B. W. Jo, C. H. Kim, G. H. Tae, and J. B. Park, Characteristics of\r\ncement mortar with nano-SiO2 particles, Construction and Building\r\nMaterials, 21, 2007, 1351-1355.\r\n[3] W. Y. Kuo, J. S. Huang, C. H. Lin, Effects of organo-modified\r\nmontmorillonite on strengths and permeability ofcement mortars,\r\nCement and Concrete Research, 36, 2006, 886 \u2013 895.\r\n[4] J. Chen, S. C. Kou, C. S. Poon, Hydration and properties of nano-TiO2\r\nblended cement composites, Cement & Concrete Composites, 34, 2012,\r\n642\u2013649.\r\n[5] L. Raki, J. Beaudoin, R. Alizadeh, J. Makar, T. Sato, Cement and\r\nConcrete Nanoscience and Nanotechnology, Materials, 3, 2010, 918-\r\n942.\r\n[6] D. Abdullah, T.R. Pitt Ford, S. Papaioannou, J. Nicholson, F.\r\nMcDonald, An evaluation of accelerated Portland cement as a\r\nrestorative material, Biomaterials, 23, 2002, 4001-4010.\r\n[7] M.G. Gandolfi, F. Perut, G. Ciapetti, R. Mongiorgi, C. Prati, New\r\nPortland Cement\u2013based Materials for Endodontics Mixed with\r\nArticaine Solution: A Study of Cellular Response, Journal of\r\nEndodontics, 34, 2008, 39-44.\r\n[8] A.L. Gomes Corn\u00e9lio, L.P. Salles, M. Campos da Paz, J.A. Cirelli, J.M.\r\nGuerreiro-Tanomaru, M. Tanomaru Filho, Cytotoxicity of Portland\r\nCement with Different Radiopacifying Agents: A Cell Death Study,\r\nJournal of Endodontics, 37, 2011, 203-210.\r\n[9] D.A. Ribeiro, M.A.H. Duarte, M.A. Matsumoto, M.E.A. Marques,\r\nD.M.F. Salvadori, Biocompatibility In Vitro Tests of Mineral Trioxide\r\nAggregate and Regular and White Portland Cements, Journal of\r\nEndodontics, 31 (2005) 605-607.\r\n[10] S. Shahi, S. Rahimi, H.R. Yavari, H. Mokhtari, L. Roshangar, M.M.\r\nAbasi, S. Sattari, M. Abdolrahimi, Effect of Mineral Trioxide\r\nAggregates and Portland Cements on Inflammatory Cells, Journal of\r\nEndodontics, 36, 2010, 899-903.\r\n[11] N. Wongkornchaowalit, V. Lertchirakarn, Setting Time and Flowability\r\nof Accelerated Portland Cement Mixed with Polycarboxylate\r\nSuperplasticizer, Journal of Endodontics, 37, 2011, 387-389.\r\n[12] M. D. Lepech, V. C. Li, Water permeability of engineered cementitious\r\ncomposites, Cement & Concrete Composites, 31, 2009, 744-753.\r\n[13] M. \u015eahmaran, V. C. Li, De-icing salt scaling resistance of mechanically\r\nloaded engineeredcementitious composites, Cement and Concrete\r\nResearch, 37, 2007, 1035-1046.\r\n[14] A. Spagnoli, A micromechanical lattice model to describe the fracture\r\nbehaviour ofengineered cementitious composites, Computational\r\nMaterials Science, 46, 2009, 7-14.\r\n[15] C. Panganayi, H. Ogata, K. Hattori, Effect of plate thickness on crack\r\npropagation characteristics of engineered cementitious composites,\r\nAsian Journal of Applied Sciences, 4, 2011, 542-547.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 99, 2015"}