This work is dedicated to the description of a new basic creep model that was developed
and integrated in a thermo-mechanical model already available in a FEM-based software – FEMIX.
The basic creep model is based on the Dirichlet series expansion of the Double Power Law (DPL)
approach, and is capable of predicting the aging creep behaviour of cement based materials (CBM)
since early ages. Based on experimental results, the model resorts to a non-linear least square datafitting operation to various loading ages creep compliance curves, and determines a set of model
defining coefficients to simulate the aging viscoelastic properties of any CBM. This model was
integrated with a thermo-mechanical model capable of simulating maturation, shrinkage and cracking
phenomena of CBM. The good predictive performance of the implemented model is appraised by
simulating experimental tests at material and structural scale.The authors acknowledge the support provided
by FEDER funds through the Operational
Programme for Competitiveness and Internationalization - COMPETE and by
national funds through FCT (Portuguese
Foundation for Science and Technology) within
the scope of the project InOlicTower, POCI-01-
0145-FEDER-016905 (PTDC/ECMEST/2635/2014). The first Author would like to
acknowledge the grant SFRH/BDE/96381/2013 co-funded by CiviTest
and by FCT
