A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
On the use of nanoindentation for cementitious materials
Abstract Recent progress in experimental and theoretical nanomechanics opens new venues in materials science for the nano-engineering of cement-based composites. In particular, as new experimental techniques such as nanoindentation provide unprecedented access to micromechanical properties of materials, it becomes possible to identify the mechanical effects of the elementary chemical components of cement-based materials at the scale where physical chemistry meets mechanics, including the properties of the four clinker phases, of portlandite, and of the C-S-H gel. In this paper, we review some recent results obtained by nanoindentation, which reveal that the C-S-H gel exists “mechanically” in two different forms, a lowdensity form and a high-density form, which have different mean stiffness and hardness values and different volume fractions. While the volume fractions of the two phases depend on mix proportions, the mean stiffness and hardness values do not change from one cement-based material to another; instead they are intrinsic properties of the C-S-H gel.
On the use of nanoindentation for cementitious materials
Abstract Recent progress in experimental and theoretical nanomechanics opens new venues in materials science for the nano-engineering of cement-based composites. In particular, as new experimental techniques such as nanoindentation provide unprecedented access to micromechanical properties of materials, it becomes possible to identify the mechanical effects of the elementary chemical components of cement-based materials at the scale where physical chemistry meets mechanics, including the properties of the four clinker phases, of portlandite, and of the C-S-H gel. In this paper, we review some recent results obtained by nanoindentation, which reveal that the C-S-H gel exists “mechanically” in two different forms, a lowdensity form and a high-density form, which have different mean stiffness and hardness values and different volume fractions. While the volume fractions of the two phases depend on mix proportions, the mean stiffness and hardness values do not change from one cement-based material to another; instead they are intrinsic properties of the C-S-H gel.
On the use of nanoindentation for cementitious materials
Constantinides, G. (author) / Ulm, F. -J. (author) / Van Vliet, K. (author)
2003
Article (Journal)
English
On the use of nanoindentation for cementitious materials
| Springer Verlag | 2003
On the use of nanoindentation for cementitious materials
| Online Contents | 2003
On the use of nanoindentation for cementitious materials
| British Library Online Contents | 2003
Energy-Based Analysis of Nanoindentation Curves for Cementitious Materials
| Online Contents | 2012
Energy-Based Analysis of Nanoindentation Curves for Cementitious Materials
| British Library Online Contents | 2012