Challenges in Design and Construction of an Innovative and Sustainable Built Environment vol:1 issue:1 edition:1 pages:1249-1256
IABSE edition:1 location:Stockholm date:21-23 September 2016
This contribution presents the preliminary research outcomes of a pilot program for the validation of models and test methods for assessment of the durability related to Belgian concrete mixtures. The chloride diffusion and carbonation model of fib bulletin 34  and the recent outcomes reported in fib bulletin 76  are applied and evaluated. A sensitivity analysis is performed for both damage mechanisms. In addition there are certain parameters in the models which can be recalibrated to the Belgian concrete compositions or exposure conditions. Such a calibration will be performed for the common used types of cement in Belgium (CEM I, CEM III/A and CEM III/B). Preliminary research shows that for chloride ingress, the ageing exponent α, the diffusion- and migration coefficient Da(t) and DRCM,0(t0) can be recalibrated according to the Belgian situation. In case of carbonation the relationship between the natural RNAC-1 and accelerated RACC-1 inverse carbonation resistance can be determined.