Abstract
A mathematical model for drying shrinkage of concrete is presented in this paper. The proposed model originates from some simple hypotheses which are concerned to the configuration of the pore structure of concrete and micromechanical behavior of water in pore. The characteristic of pore structure of hardened cement paste in concrete is expressed by the distribution function of pore size. Micromechanical phenomena in concrete, which are thermodynamic equilibrium and transport process of vapor and liquid water and associated volumetric change of concrete, are incorporated based on the unified concept of micro pore. Drying shrinkage behavior of concrete specimen, which are both weight loss and volumetric change, can be numerically simulated taking their pore structure into consideration.
