Swelling of Black Cotton Soil Using Centrifuge Modeling

Hydro-mechanical behavior of polypropylene fiber reinforced expansive soils

“…Especially lightly loaded structures founded on desiccated unsaturated soils suffer severe distress subsequent to their construction due to large amounts of heaving and shrinking with the seasonal moisture changes. Movement of foundations, upheaval of floors and pavements, cracking of the walls and bursting of pipes are some of the commonly encountered problems on these soils (O'Neil and Ghazzaly, 1977;Dakshanamurthy, 1979;Rao et al, 1988;Gadre and Chandrasekaran, 1994). Cyprus is one of the areas where similar structural problems have been reported.…”

Quellverhalten eines teilgesättigten Kaolinit‐Tons: Laborversuche, Modell und numerische Simulation

“…Untersuchungen zum Quellverhalten teilgesättigter bindiger Böden werden viel seltener in der Fachliteratur angetroffen. Die gängige Versuchstechnik basiert auf dem Ödometerversuch [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25]. In erster Näherung wird eine lineare Abnahme der Quelldehnung mit dem Logarithmus des Quelldrucks angenommen [15].…”

Behavior of a Lime-Treated Expansive Soil

“…Moreover, other studies have focused on the prediction of the swelling behavior in expansive soils (Frydman & Weisberg, 1991;Gadre & Chandrasekaran, 1994;Chiappone, 2004;Zornberg et al, 2009;Kuhn, 2010;Forouzan, 2016 multiple specimens simultaneously and the testing time is usually significant less than that required from conventional free swell test. The rotation within the centrifuge imposes a gravitational field across the specimen, accelerating the water flow through the specimen and facilitating full water permeation and, consequently, entering into the microporous structure of the soil.…”

“…The centrifuge testing for characterization of volumetric changes in expansive clays has been early documented in the literature (Frydman & Weisberg, 1991;Gadre & Chandrasekaran, 1994)), but in the last years it has become an important testing method for measurement of swelling characteristics of expansive soils (Snyder, 2015;Armstrong, 2014;Das, 2014;Walker, 2012;Kuhn, 2010).…”

“…This imposes a gravitational gradient across the sample, accelerating the flow of the water through the sample. Depending on the test setup, water infiltrates the soil either from the top (Frydman & Weisberg, 1991;Plaisted, 2009;Kuhn, 2010) or the bottom (Gadre & Chandrasekaran, 1994) The results reported that the strain induced during the centrifuge test had more scatter behavior and it was higher than that from the conventional free swell test (Figure 2.19). This discrepancy was attributed to the fact of the specimens had to be removed from the increased gravitational field, and reintroduced to the 1-g environment (specimen was removed from the centrifuge) in order to take height measurements periodically.…”