Effect of the particle interactions on the structuration and mechanical strength of particulate materials

摘要: We investigate the effect of particles interaction on mechanical strength particulate materials. Starting from a dispersion charged particles, interparticle force can be modulated by addition ionic species. The structuration medium is then governed competition between drying and gelation processes. Rheological measurements show that species boosts aggregation dynamics into solid state changes structural properties final material. This last point highlighted precise i) materials through crack pattern quantification, supported indentation testing, ii) permeation during process in controlled geometry. In particular, these results decrease drained elastic modulus an increase pore size when content material increased. Hence, we structure behaves mechanically as network whose increases electrostatic repulsion decreased. These are consistent with fact way structured determines their properties.