Nanoscaled Mechanical Properties of Cement Composites Reinforced with Carbon Nanofibers
Open Access
Abstract
This paper reports the effects of carbon nanofibers (CNFs) on nanoscaled mechanical properties of cement composites. CNFs were added to cement composites at the filler loading of 0.2 wt % (by wt. of cement). Micrographs based on scanning electron microscopy (SEM) show that CNFs are capable of forming strong interfacial bonding with cement matrices. Experimental results using nanoindentation reveal that the addition of CNFs in cement composites increases the proportions of high-density calcium-silicate-hydrate gel (HD-CSH) compared to low-density CSH gel. It was also found that the inclusion of CNFs increases the compressive strength of cement composites.Keywords
This publication has 20 references indexed in Scilit:
- Carbon Nanotubes: How Strong Is Their Bond with the Substrate?ACS Nano, 2011
- Highly dispersed carbon nanotube reinforced cement based materialsCement and Concrete Research, 2010
- Multi-scale mechanical and fracture characteristics and early-age strain capacity of high performance carbon nanotube/cement nanocompositesCement and Concrete Composites, 2010
- Nanogranular packing of C–S–H at substochiometric conditionsCement and Concrete Research, 2010
- Microstructure and macroscopic properties of hybrid carbon nanofiber/silica fume cement compositesComposites Science and Technology, 2009
- The nano-mechanical signature of Ultra High Performance Concrete by statistical nanoindentation techniquesCement and Concrete Research, 2008
- Nanoindentation mapping of mechanical properties of cement paste and natural rocksMaterials Characterization, 2007
- Critical review of analysis and interpretation of nanoindentation test dataSurface and Coatings Technology, 2006
- The effect of two types of C-S-H on the elasticity of cement-based materials: Results from nanoindentation and micromechanical modelingCement and Concrete Research, 2004
- Determination by nanoindentation of elastic modulus and hardness of pure constituents of Portland cement clinkerCement and Concrete Research, 2001