During a subsoil exploration program, undisturbed normally consolidated siltyclay samples were collected in Shelby tubes from location A as shown in Figurebelow2 mG.W.TSilty sande = 0.72; G, = 2.692.2 m3.5 mSilty clayw = 22%; G, = 2.725.25 mPoorly graded sand= 19.8 kN/m³2.6 mYsatFollowing are the results of four drained, direct shear tests conducted on the Remaining Time: 54 minutes, 45 seconds.* Question Completion Status:Poorly graded sand= 19.8 kN/m³2.6 mYsatFollowing are the results of four drained, direct shear tests conducted on theclay samples with each having a diameter of 63.5 mm and height of 32 mm.ShearNormal force|(N)Test Numberforce atfailure (N)18428.916859.6325489.1360125.3a. Determine the drained angle of friction for the silty clay soil.b. Determine the shear strength of the clay in the eld at location A.Attach FileBrowse Local FilesClick Save and Submit to save and submit. Click Save All Answers to save all answers.

For the silty clay - Void ratio - Se = wGshere,w = 22% and Gs = 2.72 GivenS = 1⇒1×e = 22100×2.72⇒e…

During a subsoil exploration program, undisturbed normally consolidated silty clay samples were collected in Shelby tubes from location A as shown in Figure below 2 m G.W.T Silty sand e 0.72; G, = 2.69 2.2 m 3.5 m Silty clay w = 22%; G, = 2.72 5.25 m Ac Poorly graded sand Ysat = 19.8 kN/m3 2.6 m Following are the results of four drained, direct shear tests conducted on the

During a subsoil exploration program, undisturbed normally consolidated silty clay samples were collected in Shelby tubes from location A as shown in Figure below 2 m G.W.T Silty sand e 0.72; G, = 2.69 2.2 m 3.5 m Silty clay w = 22%; G, = 2.72 5.25 m Ac Poorly graded sand Ysat = 19.8 kN/m3 2.6 m Following are the results of four drained, direct shear tests conducted on the

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter12: Shear Strength Of Soil

Section: Chapter Questions

Problem 12.4P

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It is known that a particular deposit of clay has the following shear strength parameters: c' = 15 kPa, o' = 23°; Cu = 10 kPa, cu = 13° A sample of this clay is consolidated in a triaxial cell to an all-round pressure (03) of 250 kPa. The sample is then sheared by increasing 0₁, keeping 3 constant and the drainage valve closed. What is: i) ₁ at failure? ii) Pore water pressure inside the sample at failure? iii) Final values of 0₁' and 03'? iv) Value at failure of Skempton's pore pressure coefficient A?
7.14 For a normally consolidated clay, the following values are given: Void ratio, e k (cm/sec) 0.95 0.2 x 10-6 0.91 x 10-6 1.6 Estimate k at a void ratio of 1.1. Use Eq. (7.38). Ⓒ Cengage Learning 2014
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12.4 The following are the results of four drained direct shear tests on undisturbed nor- mally consolidated clay samples having a diameter of 50 mm. and height of 25 mm. Normal Shear force at Test no. force (N) fallure (N) 1 67 23.3 133 46.6 3 213 44.6 4 369 132.3 Draw a graph for shear stress at failure against the normal stress and determine the drained angle of friction from the graph. © Ceng age Leaming 2014
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