ABSTRACT
The multiple factors related moisture absorption model was established through the moisture absorption test of GFRP bars embedded in steam-curing concrete, which considered different curing temperatures, different thicknesses of protective layer and different diameters of GFRP bars as analysis variables. Semi-reliability probability damage assessment of GFRP bars embedded in steam-curing concrete was described by introduced the reliability and stochastic theory. Subsequently, the tensile test of GFRP bars was carried out to verify the feasibility of the damage assessment. The results showed that the moisture absorption curves of GFRP bars were basically in line with the Fick’s law. In addition, the influences of the curing temperature, the thickness of protective layer and the diameter on moisture absorption performance were presented. The Semi-reliability probability damage assessment model of GFRP bars embedded in steam-curing concrete beams adequately considered the multiple factors related moisture absorption as well as the uncertainty and randomness of the influencing factors during the process of moisture absorption.
