Investigating the effects of using different types of SiO2 nanoparticles on the mechanical properties of binary blended concrete
- 1 November 2013
- journal article
- research article
- Published by Elsevier BV in Composites Part B: Engineering
- Vol. 54, 52-58
- https://doi.org/10.1016/j.compositesb.2013.04.035
Abstract
The aim of this study was to assess the effects of two different types of SiO2 nanoparticles (N and M series) with different ratios on the workability and compressive strength of developed binary blended concretes cured in water and lime solution as two different curing media. N and M series SiO2 nanoparticles with an average size of 15 nm were used as obtained from the suppliers. Fresh and hardened concretes incorporating 0.5%, 1.0%, 1.5% and 2.0% of N and 2% of M series nanoparticles with constant water to binder ratio and aggregate content were made and tested. Fresh mixtures were tested for workability and hardened concretes were tested for compressive strength at 7, 28 and 90 days of curing. Fresh concrete test results showed that the workability of binary blends was reduced in the presence of both types of SiO2 nanoparticles. Hardened concrete test results revealed that the optimal replacement level of cement by N series of SiO2 nanoparticles for producing concrete with considerably improved strength was set at 1.0 wt.% after curing in water. However, the ultimate strengths of binary blended concretes were gained at 2.0 wt.% replacement of cement by both series after curing in lime solution. It is concluded that SiO2 nanoparticles play significant roles in mechanical properties of concrete by formation of additional calcium silicate hydrate gel during treatment, which played an important role in raising highly the compressive strength of binary blends. The current study sheds light on the implications of nanotechnology in nano-engineering of concrete. (C) 2013 Elsevier Ltd. All rights reserved.Keywords
This publication has 33 references indexed in Scilit:
- Cement and Concrete Nanoscience and NanotechnologyMaterials, 2010
- Influence of Nano-SiO2 Addition on Microstructure and Mechanical Properties of Cement Mortars for FerrocementTransportation Research Record: Journal of the Transportation Research Board, 2010
- Effect of nano-silica on rheology and fresh properties of cement pastes and mortarsConstruction and Building Materials, 2009
- Rheological behavior of high performance concrete with mineral admixtures and their blendingConstruction and Building Materials, 2007
- Improvements of nano-SiO2 on sludge/fly ash mortarWaste Management, 2007
- A comparative study on the pozzolanic activity between nano-SiO2 and silica fumeJournal Of Wuhan University Of Technology-Materials Science Edition, 2006
- Characteristics of cement mortar with nano-SiO2 particlesConstruction and Building Materials, 2006
- Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fumeConstruction and Building Materials, 2005
- Continuous carbon nanotube composite fibers: properties, potential applications, and problemsElectronic supplementary information (ESI) available: frontispiece figure. See http://www.rsc.org/suppdata/jm/b3/b312092a/Journal of Materials Chemistry, 2003
- Effect of rice husk ash on high strength concreteConstruction and Building Materials, 1996