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- W2610751029 abstract "Many researchers have done researches on unsaturated soil mechanics worldwide to bring theunsaturated soil mechanics in to practices. Among those researches some of them focused onsimplifying the complex and expensive testing mechanism by developing models which can beused to predict the unsaturated soil parameters from basic soil prosperities such as Grain SizeDistribution (GSD) and Plasticity Index (PI) along with the saturated shear strength parameters.Soil water characteristic curve (SWCC) was proved to have good relationship with theunsaturated soil parameters. In this study an attempt was made to check whether those developedmodels would work for expansive and red clay soils found in Addis Ababa.Using the model developed by Fredlund and Xing (1994) along with the correlation equationgiven by Perera et.al (2005), family of SWCC for soils found in Addis Ababa has been plotted. Itwas observed that the family of SWCC plotted was out of the widely referenced family of curvesdeveloped by Zapata et.al (2000) to some extent. Even though the family of curves seems to beout of the range provided by Zapata et.al (2000), the model gave good prediction for theunsaturated shear strength parameter Φb.The percentage error between the measured values of unsaturated shear strength parameter Φb inprevious researches of Habtom (2010) and Getaneh (2010) with predicted unsaturated shearstrength parameter Φb in this study was compared.For red clay samples the percentage error lie in the range 2.07 to 6.37% for suction ranges of36.67 to 52.9 kPa and at lower suctions of 16.75 and 21.5 kPa the percentage error ranges from11.42 to 25.39% .For expansive soil samples for suction of 23.1 and 32.9 kPa, the percentage error is in the rangefrom 3.86 to 6.13%. For suction values of 14.5 and 52 kPa the range of error is about 9.45 to13.40% and for suctions of 38.8 and 48.6 kPa the error lies between 18.94 and 38.84%." @default.
- W2610751029 created "2017-05-12" @default.
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- W2610751029 date "2013-08-01" @default.
- W2610751029 modified "2023-09-26" @default.
- W2610751029 title "Prediction of Soil Water Characteristic Curve Based on Gsd and Pi for Red Clay and Expansive Soils Found In Addis Ababa" @default.
- W2610751029 hasPublicationYear "2013" @default.
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