A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Measurement of elastic properties of calcium silicate hydrate with atomic force microscopy
Abstract Atomic force microscopy (AFM) based indentation is compared to conventional nanoindentation for measuring mechanical properties of cement pastes. In evaluating AFM as a mechanical characterization tool, various analytical and numerical modeling approaches are compared. The disparities between the numerical self-consistent approach and analytical solutions are determined and reported. The measured elastic Young’s modulus determined from AFM indentation tests are compared to elastic Young’s modulus determined from nanoindentation tests of cement paste. These results indicate that the calcium silicate hydrate (C–S–H) phase of hydrated Portland cement has different properties on the different length scales probed by AFM versus nanoindenters. Packing density of C–S–H particles is proposed as an explanation for the disparity in the measured results.
Measurement of elastic properties of calcium silicate hydrate with atomic force microscopy
Abstract Atomic force microscopy (AFM) based indentation is compared to conventional nanoindentation for measuring mechanical properties of cement pastes. In evaluating AFM as a mechanical characterization tool, various analytical and numerical modeling approaches are compared. The disparities between the numerical self-consistent approach and analytical solutions are determined and reported. The measured elastic Young’s modulus determined from AFM indentation tests are compared to elastic Young’s modulus determined from nanoindentation tests of cement paste. These results indicate that the calcium silicate hydrate (C–S–H) phase of hydrated Portland cement has different properties on the different length scales probed by AFM versus nanoindenters. Packing density of C–S–H particles is proposed as an explanation for the disparity in the measured results.
Measurement of elastic properties of calcium silicate hydrate with atomic force microscopy
Jones, Christopher A. (author) / Grasley, Zachary C. (author) / Ohlhausen, James A. (author)
Cement and Concrete Composites ; 34 ; 468-477
2011-11-18
10 pages
Article (Journal)
Electronic Resource
English
Measurement of elastic properties of calcium silicate hydrate with atomic force microscopy
| Online Contents | 2012
Micromechanical Properties of Calcium Silicate Hydrate
| Tema Archive | 2013
Micromechanical Properties of Calcium Silicate Hydrate
| British Library Conference Proceedings | 2013
Micromechanical Properties of Calcium Silicate Hydrate
| British Library Online Contents | 2013