1 answer

(a) Briefly explain Mohr-Coulomb theory and show how we can determine the shear strength parameters of...

Question:

  1. (a) Briefly explain Mohr-Coulomb theory and show how we can determine the shear strength parameters of soil by plotting the shear stress versus normal stress.

    [3 marks]

  1. The following results were obtained from a consolidated undrained Triaxial (CU) test with pore water pressure measurement on three samples of a fully saturated clay. Determine the total (undrained) stress and effective (drained) stress parameters.  

[12 marks]

Sample

Cell pressure

(kN/m2)

Deviator stress at failure (kN/m2)

Pore pressure at failure  

(kN/m2)

A

300

326

146

B

400

416

206

C

600

635

208


Answers

영 Soil grains Straughter from Strength ga soil isa Resiste Against Succor deformation. soil May deained its Shood followenigCOST SO MUY Along e So Mhesis Narudd gyross In dicoro of siu? ol (Diar, I a4/51-03) (as 20 3) (0526 2 1 Shase Saross T. 6) Situlee out of you OR Angle of 79. S: Slates Flyenefren 711 S. S: Noly Cirrte for cond Mohr failure analoge a Taten B radius JoNool от ское Neley failure will crouge Stress lie on Omuelo po whoneas Qolow tuo Frugo eurolep poproeuls tuo Surte den Sto CoJulia 3= ssil .T3 Cell prossure Mass 11 11 گیا Coul prosswo All Round the soil deviator Stress load Appliedon soil aftor makiWe know that 1, = Tij ataw? (ust ) +2e tom (USA) for Clay sal = 0° Ti J3 4 20 20 = 5-63 C - Apprant Colosion of soll in Kalma

.

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