DRYING AND SHRINKAGE BEHAVIOUR OF PORTLAND CEMENT MORTAR AT INTERMEDIATE BUT CONSTANT HYDRATION DEGREE
Understanding hydration, drying and shrinkage is a challenge for the optimal design of concrete structures with supplementary cementitious materials (SCM).Different tools exist to model various elementary steps of the overall process.The strategy proposed here is to use them in 2 main sequential steps to analyze the mass loss and strain behavior over time after short curing time and to compare the results to those obtained on mimics corresponding to the samples at these curing times.By using a thermodynamic-hydration tool (MoNTY) up to curing time, hydration is estimated.Then, relevant Thermal-Hydric-Hydration-Mechanical (THHM) properties as a function of water content at the intermediate curing time are calculated.Code_ASTER is finally used to evaluate the material response and results are compared to experiments.Results show that fixed transport properties is sufficient for predicting drying rate and linear drying shrinkage constitutive law is determined to be insufficient.
G.Pham A.Bauland A.Delaplace Q-H.Vu R.Barbarulo
Lafarge Research Center (LCR),Saint Quentin Fallavier,France
国际会议
The Fourth RILEM International Symposium on Concrete Modelling (CONMOD 2014)(第四届RILEM混凝土材料建模国际会议)
北京
英文
152-159
2014-10-12（万方平台首次上网日期，不代表论文的发表时间）