Figure 5.
The graph illustrates the relationship between saturation degree S w measured on the vertical axis and suction s in mega pascals indicated on the horizontal axis. The vertical axis ranges from 0 to 1, while the horizontal axis spans from 10 to the power of negative 2 to 10 to the power of 2. Several data points are plotted, representing different types of clay, compacted boom clay with two specific porosities, along with natural boom clay and natural ypresian clay. Each type is represented by distinct markers such as circles and triangles. Two fitted curves are included, one solid and one dashed, corresponding to the different porosity values for the compacted boom clay. The data points and fitted lines indicate varying responses of different clay types to changes in suction. The graph is structured to highlight these relationships clearly without additional embellishments.Calibration of water retention curve parameters. Data of compacted Boom Clay are taken from Romero et al. (2011). Data of natural Ypresian Clay and Boom Clay are obtained in Piña Díaz (2011)