Prediction of the Basic Creep of Normal and High-strength Concretes based on an Analytical Micromechanical Model

The main purpose of this paper is to predict analytically the concrete basic creep time-dependent deformation according to its composition and microstructure. Thus, concrete was modelled as a three-phase composite formed by aggregates surrounded by interfacial transition zones (ITZs) and embedded randomly in a hardened cement paste. First, the ITZ phase volume fraction within concrete was evaluated using an analytical formula that the authors...