Figure 4: Evolution of the predicted macroscopic tensile stress along cycles of impregnation and drying.
In each series, the filled symbol indicates the cycle number at which 50% of the samples have lost mass. The dashed line is the maximum stress that could be reached at 30 °C, a temperature at which no damage was observed32. The continuous horizontal line is the critical macroscopic tensile stress as calculated from the average value resulting from the uniaxial tensile strength tests, carried out on 6 samples. The grey-shaded band indicates that value±one s.d.
