AN INVESTIGATION INTO WATER BEHAVIOR IN MICROPORES BASED ON MOLECULAR DYNAMICS SIMULATION

Abstract

  For estimation of durability of concrete, it is important to understand the behavior of liquid water in micro pores. It is well-known that water permeability in concrete can be idealized by Darcy's law and water penetration is usually calculated based on the permeability coefficient. It was found, however, that there exists a non-linear relationship between permeation of water and hydraulic gradient through the Output-Method permeability test under different pressures and the friction phenomenon of water movement in fine pores was suggested. This research reveals that such static and kinetic friction behavior between micro pores and water were clarified using a molecular dynamics (MD) simulation.