A new kind of cementitious composite with high toughness, which is used as the cover layer of bridge and highway, is examined by means of the multiscale material design theory. The primary mechanical properties and the crack path of the designed cementitious composite are predicted by a revised lattice model based on the meso-structure of the cementitious composite scanned by a micro-CT (micro-focus computational tomography). Further, the reliability of the modeling results is verified by laboratory experimental test results. The primary mechanical properties of the designed cementitious cover layer are obtained from static bending tests. The results show that multiscale components of the cementitious composites can be effectively selected and optimized by the multiscale material design theory. Finally, the optimized mix proportion and the appropriate latex additions are determined for the cementitious cover layer with high toughness.
Multiscale material design and crack path prediction of a cementitious cover layer with high toughness / L. P., Guo; Wei, Sun; Carpinteri, Andrea; Spagnoli, Andrea; Q. Y., Cao. - (2009), pp. 1135-1142. (Intervento presentato al convegno International Conference on Crack Paths (CP 2009) tenutosi a Vicenza (Italy) nel 23-25 September 2009).
Multiscale material design and crack path prediction of a cementitious cover layer with high toughness.
CARPINTERI, Andrea;SPAGNOLI, Andrea;
2009-01-01
Abstract
A new kind of cementitious composite with high toughness, which is used as the cover layer of bridge and highway, is examined by means of the multiscale material design theory. The primary mechanical properties and the crack path of the designed cementitious composite are predicted by a revised lattice model based on the meso-structure of the cementitious composite scanned by a micro-CT (micro-focus computational tomography). Further, the reliability of the modeling results is verified by laboratory experimental test results. The primary mechanical properties of the designed cementitious cover layer are obtained from static bending tests. The results show that multiscale components of the cementitious composites can be effectively selected and optimized by the multiscale material design theory. Finally, the optimized mix proportion and the appropriate latex additions are determined for the cementitious cover layer with high toughness.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
