Microstructures and Mechanical Properties of Dense Particle Gels: Microstructural Characterization
arXiv:0911.1248 · doi:10.1016/j.jeurceramsoc.2007.12.007
Abstract
The macroscopic mechanical properties of densely packed coagulated colloidal particle gels strongly depend on the local arrangement of the powder particles on length scales of a few particle diameters. Heterogeneous microstructures exhibit up to one order of magnitude higher elastic properties and yield strengths than their homogeneous counterparts. The microstructures of these gels are analyzed by the straight path method quantifying quasi-linear particle arrangements of particles. They show similar characteristics than force chains bearing the mechanical load in granular material. Applying this concept to gels revealed that heterogeneous colloidal microstructures show a significantly higher straight paths density and exhibit longer straight paths than their homogeneous counterparts.
7 pages, 9 figures
References in corpus (1)
Cited by in corpus (6)
- Quantification of the Heterogeneity of Particle Packings
- Multi-component colloidal gels: interplay between structure and mechanical proprieties
- Generation of Porous Particle Structures using the Void Expansion Method
- Cage effect in supercooled molecular liquids: local anisotropies and collective solid-like response
- The Influence of the Degree of Heterogeneity on the Elastic Properties of Random Sphere Packings
- Interdependent evolution of robustness, force transmission and damage in a heterogeneous quasi-brittle granular material: from suppressed to cascading failure