https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33651 Thu 29 Nov 2018 13:20:29 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:23678 w, defined as the horizontal effective stress exerted on the wall of the consolidation ring (σ_hw) divided by the vertical effective stress (σ_v) in the soil specimen is suggested as an indicator of the tendency for lateral deformation under field conditions. It is observed that if the value of K_w is close to the value of K₀of the soil (the 'at-rest' earth pressure coefficient), there should be very limited lateral displacement in field situations. The laboratory test results show that during the loading process, the value of K_w is mainly influenced by the ratio of the magnitude of the surcharge pressure to the vacuum pressure (RL) and the rate of surcharge loading (SLR). At the end of the consolidation the value of K_w increases with increasing RL, but it is almost independent of SLR for the conditions investigated. In the presence of a vacuum pressure, at the end of consolidation the value of K_w is usually less than the original value of K₀ of the soil. The test results also indicate that K_w has a strong correlation with the synthetic non-dimensional loading parameter, RLS, as defined by Chai et al. (2013), which includes the effects of RL and SLR as well as the consolidation properties of the soil. It is suggested that the parameter RLS can be used to predict lateral displacements under field conditions that involve combined surcharge and vacuum pressure loading.]]> Sat 24 Mar 2018 07:13:57 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:42772 Fri 02 Sep 2022 10:46:17 AEST ]]>