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Reactive powder concrete reinforced by nanoparticles
Reactive powder concrete reinforced by nanoparticles
- Source :
- Advances in Cement Research. 28:99-109
- Publication Year :
- 2016
- Publisher :
- Thomas Telford Ltd., 2016.
-
Abstract
- The influences of four nanoparticles of nanosilica (SiO2), nano-calcium carbonate (CaCO3), nano-aluminium oxide (Al2O3) and nano-iron oxide (Fe2O3) on workability, hydration, pore structure and mechanical strength of reactive powder concrete (RPC) are investigated by macro/microscopic methods. The aim of this study is to provide an essential basis for exploiting new-generation cementitious materials with ultra-high strength and super-long service life by employing modern nano-modification technology. The results indicate that addition of low-dosage nanoparticles to RPC shows a remarkable influence on the mechanical strength, hydration and pore structure compared to the ordinary cement system with a relatively high water/cement ratio. The compactness and mechanical strength of RPC can be greatly improved by incorporating nanoparticles. The promotive ratio of flexural and compressive strength of RPC is up to 30%. The elevated temperature further promotes the effect of nanoparticles on the strength of RPC. The seeding effect of nanoparticles on hydration of cement and the nano-size filling role are strengthened in the RPC system.
- Subjects :
- Cement
Materials science
0211 other engineering and technologies
Oxide
Nanoparticle
02 engineering and technology
Building and Construction
021001 nanoscience & nanotechnology
Durability
chemistry.chemical_compound
Compressive strength
Flexural strength
chemistry
021105 building & construction
Service life
General Materials Science
Cementitious
Composite material
0210 nano-technology
Subjects
Details
- ISSN :
- 17517605 and 09517197
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Advances in Cement Research
- Accession number :
- edsair.doi...........d5de7fa936ef27d907aeebed6e76c4af
- Full Text :
- https://doi.org/10.1680/jadcr.15.00058