Effects of Cr2O3 nanoparticles on properties of SCC with GGBFS binder

Strength assessments and percentage of water absorption of self-compacting concrete containing different amounts of ground granulated blast-furnace slag (GGBFS) and Cr2O3 nanoparticles as binder were investigated. Portland cement was replaced by different amounts of GGBFS and the properties of the concrete specimens were investigated. GGBFS was found to improve the physical and mechanical properties of concrete up to 45 wt%. Cr2O3 nanoparticles were added to concrete with the optimum content of GGBFS and the properties of the specimens were measured. Cr2O3 nanoparticles, as a partial replacement of cement up to 3·0 wt%, could accelerate C–S–H gel formation as a result of increased amounts of crystalline Ca(OH)2 at an early age of hydration and, hence, increase the strength and improve the resistance to water permeability of concrete specimens. This paper presents several empirical relationships to predict the flexural and split tensile strengths of the specimens by means of the corresponding compressive s...

[1]  Anne B. Abell,et al.  Mercury Intrusion Porosimetry and Image Analysis of Cement-Based Materials. , 1999, Journal of colloid and interface science.

[2]  Ana Guerrero,et al.  Improvement of initial mechanical strength by nanoalumina in belite cements , 2007 .

[3]  V. Malhotra.  Supplementary cementing materials for concrete , 1987 .

[4]  G. Glass,et al.  Corrosion inhibition in concrete arising from its acid neutralisation capacity , 2000 .

[5]  Jueshi Qian,et al.  High performance cementing materials from industrial slags — a review , 2000 .

[6]  A. Nazari,et al.  Microstructural, thermal, physical and mechanical behavior of the self compacting concrete containing SiO2 nanoparticles , 2010 .

[7]  O. Dominguez,et al.  Characterization and properties of portland cement composites incorporating zinc-iron oxide nanoparticles , 2002 .

[8]  Zhenhua Li,et al.  Investigations on the preparation and mechanical properties of the nano-alumina reinforced cement composite , 2006 .

[9]  J. Ou,et al.  Flexural fatigue performance of concrete containing nano-particles for pavement , 2007 .

[10]  C Arya,et al.  Effect of cement type on chloride binding and corrosion of steel in concrete , 1995 .

[11]  I. Afrani,et al.  The Effects of Different Cementing Materials and Curing on Concrete Scaling , 1994 .

[12]  Kiyofumi Kurumisawa,et al.  Development of technique for observing pores in hardened cement paste , 2002 .

[13]  Adrian Long,et al.  Monitoring electrical resistance of concretes containing alternative cementitious materials to assess their resistance to chloride penetration , 2002 .

[14]  Luc Taerwe,et al.  Influence of limestone powder used as filler in SCC on hydration and microstructure of cement pastes , 2007 .