|About this Abstract
||MS&T21: Materials Science & Technology
||Ceramics and Glasses Modeling by Simulations and Machine Learning
||Effect of Polydispersity on the Fracture Properties of Calcium–Silicate–Hydrate Gel
||Ashish Yadav, N.M. Anoop Krishnan
|On-Site Speaker (Planned)
The calcium–silicate–hydrate (C–S–H) gel mainly governs the mechanical and durability properties of the concrete. However, the structural features of C–S–H which control its fracture properties are poorly understood. Here, we investigate the effect of grain polydispersity and packing density using the coarse-grained mesoscale simulation. The simulations show good agreement with the experimental fracture energy. We demonstrate that the fracture energy is largely independent of the packing density but mainly affected by the grain polydispersity beyond the initial stable configuration. These results highlight the crucial role of polydispersity in controlling the C–S–H gel's fracture properties.