Literature Rview : Nano-Cement : a High Strength Low Cost Alternative
Nano-Cement : A high strength low cost alternative.
(A review of the paper : Influence of nano - SiO2 on Portland cement pastes by M. Stefanidou and I. Papayianni)
*Corresponding Author : M. Stefanidou ; Email Address :stefan@civil.auth.gr
Abstract
The object of this review is to throw light on the paper : “Influence of nano- SiO2 on the Portland cement pastes” . This paper was written by M.Stefanidou and I. Papayianni. The paper is based on the research conducted by them on high strength cement pastes which were infused with nano-SiO2 at different percentages (0%, 0.5%, 1%, 2%, and 5%). These nano-SiO2 particles which were produced by pyrolysis have known to actually improve the properties of cement pastes thereby increasing their performance. From the research based on a number of tests , the authors came to the conclusion that the nano-SiO2 appear to affect the mechanical properties and the structure of high strength cement pastes even in minute concentrations. This research can therefore be considered as a continuation of testing nano particles in cement mixtures by increasing the packing factor or increase the hydration rate in the process of cement hydration.
Introduction
Nano technology has contributed a number of materials that have excellent properties and a lot of research has been put into effect in order to create nano particles which could be infused into cement paste in order to improve their performance. The different stages of mechanical and structural properties were tested and research has been done in order to understand the influence of these nano particles over cement properties. Research done by testing micro silica or other materials often try to improve the hydration rate in cement hydration process. Quality of cement is enhanced by the addition of nano scale particles. SiO2, TiO2, Al2O3 and carbon nano tubes are the mainly used nano particles in cement products. Deformation and flow properties have been recorded in
(A review of the paper : Influence of nano - SiO2 on Portland cement pastes by M. Stefanidou and I. Papayianni)
*Corresponding Author : M. Stefanidou ; Email Address :stefan@civil.auth.gr
Abstract
The object of this review is to throw light on the paper : “Influence of nano- SiO2 on the Portland cement pastes” . This paper was written by M.Stefanidou and I. Papayianni. The paper is based on the research conducted by them on high strength cement pastes which were infused with nano-SiO2 at different percentages (0%, 0.5%, 1%, 2%, and 5%). These nano-SiO2 particles which were produced by pyrolysis have known to actually improve the properties of cement pastes thereby increasing their performance. From the research based on a number of tests , the authors came to the conclusion that the nano-SiO2 appear to affect the mechanical properties and the structure of high strength cement pastes even in minute concentrations. This research can therefore be considered as a continuation of testing nano particles in cement mixtures by increasing the packing factor or increase the hydration rate in the process of cement hydration.
Introduction
Nano technology has contributed a number of materials that have excellent properties and a lot of research has been put into effect in order to create nano particles which could be infused into cement paste in order to improve their performance. The different stages of mechanical and structural properties were tested and research has been done in order to understand the influence of these nano particles over cement properties. Research done by testing micro silica or other materials often try to improve the hydration rate in cement hydration process. Quality of cement is enhanced by the addition of nano scale particles. SiO2, TiO2, Al2O3 and carbon nano tubes are the mainly used nano particles in cement products. Deformation and flow properties have been recorded in
References: [1] Sobolev K et al. Engineering of SiO2 nanoparticles for optimal performance in nano cement-based materials. In: Bittnar Z, Bartos PJM, Nemecek J, Smilauer V, Zeman J, editors. Nanotechnology in Construction: Proceedings of the NICOM3. Prague; 2009. p. 139–48. [2] Li G. Properties of high-volume fly ash concrete incorporating nano-SiO2. Cem Concr Res 2004;34:1043–9. [3]http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=W25KNHNiagmlg56KaG2&page=1&doc=1