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<h2 class="hd hd-2 unit-title">Lecture</h2>
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<p><span style="color: #333333; font-family: 'Open Sans', sans-serif; font-size: 15px;">Chapter 2 - State Variables and their Measurement </span><span style="color: #333333; font-family: 'Open Sans', sans-serif; font-size: 15px;">presents the state variables by which the transition from the saturated soil condition to the unsaturated soil condition can be described, in particular the matric suction as the difference between pore-air and pore-water pressures. The measurement of soil suction helps in linking the state of stresses in field and laboratory conditions.</span></p>
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<h3 class="hd hd-2">Video</h3>
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