| Project name | Viscoelasticity related deformability and structural build-up of fresh concrete – Effects of carrier liquid chemistry on particle interactions (VisCodeBuild) |
|---|---|
| Acronym | VisCodeBuild |
| Project partner |
|
| Grantor |
DFG (https://gepris.dfg.de/gepris/projekt/451894070) |
| Duration | from: 2021 to: 2026 |
|
Research field |
M+M (E+E > Energy + Environment I+I > Information + Intelligence M+M > Matter + Materials) |
| Project content |
The VisCodeBuild project studies the viscoelastic behavior of cement-based materials, with a focus on microstructural modeling (Figure 1). Using measurements of colloidal interactions and ion concentrations during early hydration (Figure 2), particle-based microstructure models are developed, both statistical and fully 3D (Monte Carlo), to predict the rheological behavior of cement pastes at rest and under shear. These microstructure models also form the foundation for advanced Computational Fluid Dynamics (CFD) simulations, realistically capturing the flow of fresh cement-based materials while accounting for time- and shear-dependent viscoelastic properties and chemical particle interactions. |
Cement paste yield stress microstructural simulation: aggregation/flocculation of cement and hydration nucleation particles forming a percolated network linking cement to form a rigid network; increasing hydration adds nucleation particles, strengthening interaction bridges.
Project overview: interdisciplinary and multi-scale analysis of the viscoelasticity and deformability of fresh cement-based materials, emphasizing the chemistry-driven structural build-up and flow dynamics.
