ICC (EC) Soils - Material Testing (edit), Combined Questions with Correct Answers 2025

ICC (EC) Soils - Material Testing (edit),
Combined Questions with Correct
Answers 2025
TheMstrengthMofMaMsoil,MorMtheMabilityMtoMcompactMaMsoilMintoMaMsuitableMconstructionMmaterialM
willMdependMon?M-MCORRECTMANSWERM-SoilMtypeM

SoilMdensity

TheMamountMofMwaterMinMtheMsoil



TypesMofMsoilsM-MCORRECTMANSWERM-GravelM(mmMtoMcm'sMinMsize)

SandM(mmMinMsize)

SiltM(fineMparticlesMwithMlittleMcohesion)

ClayM(hasMcohesion,McanMstickMtogether)

OrganicMsoilsM(peat,Mtopsoil)



OrganicMsoilsM(O)M-MCORRECTMANSWERM-
HaveMaMlargeMcomponetMofMdeadMorMdecayingMplants,MandMareMnotMusedMinMconstruction



SiltMandMClayM-MCORRECTMANSWERM-ClassifiedMbasedMonMwhetherMtheMsoilMisMplasticMorMnon-
plasticM(eg.McanMyouMrollMitMintoMaMball)



GravelMandMSandM-MCORRECTMANSWERM-
areMclassifiedMbasedMonMwhetherMorMnotMallMtheMparticleMareMroughlyMtheMsameMsize(uniform,Mlik
eMaMbeach)MorMifMthereMisMlargeMvarietyMinMparticleMsizeM(well-graded)



SoilMlayersM-MCORRECTMANSWERM-1.M(complexMzone)M3MtoM4m

2.M(glacio-lacustrineMclay)M2-12m

3.MGlacialMtill,MupMtoM9mMinMthickness

,4.MCarbonateMbedrock,MtheMupperMsurfaceMofMwhichMisMoftenMfractured,MweathersMandMirrgular



SoilMhasMtwoMcomponetsMofMstrengthM-MCORRECTMANSWERM-CohesionM(clayMonly)M

FrictionM(whenMindividualMsoilMgrainsMmoveMacrossMonManother)



SoilMfailMbyM-MCORRECTMANSWERM-shear



SoilMstrengthMisMusedMtoMdetermineM-MCORRECTMANSWERM-
TheMbearingMcapacityMofMaMfoundation

TheMstabilityMofMnaturalMorMman-madeMearthMslopesMorMretainingMwalls



TestMforMsoilMstrengthMinclude;M-MCORRECTMANSWERM-unconfinedMcompressionMtest

directMshearMtest

TriaxialMcompression



SoilMstrengthMdependsMuponM-MCORRECTMANSWERM-DensityMandMmoistureMcontent



UnconfinedMcompressionMtestM-MCORRECTMANSWERM-
usefulMforMcomparingMstrengthMofMtwoMsoilsMorMvarionMofMstrengthMwithMdept.



GradationMrefersMtoMtheMrangeMofMmeasuredMsoilMparticleMsizes.MGradationMresultsMinMclassifyingM
soilMas?M-MCORRECTMANSWERM-GravelM(M>M2Mmm)

SandM(betweenM0.075MandM2Mmm)

SiltM(0.002MtoM0.075Mmm)

ClayM(<M0.002Mmm)

, TheMparticleMsizeMdistributionMofMcoarse-grainedMsoilsMisMtypicallyMdeterminedMby?M-
MCORRECTMANSWERM-MechanicalMsieveManalysis




TheMparticleMsizeMdistributionMofMfine-grainedMsoilMisMdeterminedMusingMaM?M-
MCORRECTMANSWERM-hydrometerManalysis




TwoMparametersMhelpMtoMidentifyMsoilsMthatMareMwell-graded?M-MCORRECTMANSWERM-
TheMCoefficientMofMUniformityM(Cu)

TheMCoefficientMofMCurvatureM(Cc)



TheMhydrometerManalysisMisMusedMtoMdetermineMtheMgradationMofM-MCORRECTMANSWERM-
slitMandMclay-sizedMparticles.



OnlyMsoilMparticlesMpassingMtheMNo.M40Msieve(0.425)MareMusedMinMtheM-MCORRECTMANSWERM-
hydrometerManalysis



HydrometerMreadingsMgiveMusMtwoMthings?M-MCORRECTMANSWERM-
TheMspecificMgravity,MorMdensity,MofMtheMfluidMtellsMusMtheM%MofMmaterialMisMstillMinMsuspension.



TheMaverageMdownwardMvelosityMofMtheMhydrometerMcanMgiveMusMtheMdiameterMofMtheMparticleM
hatMisMjustMcomingMoutMofMsolution.



TheMSwedishMsoilMscientist,M_____developedMaMmethodMofMquantitativelyMdescribingMtheMeffectM
ofMsoilMmoistureMonMtheMconsistencyMofMfine-grainedMsoils.M-MCORRECTMANSWERM-Atterberg,



AlthoughMAtterbergMproposedMfiveMlimitsMonlyMtheMfollowingMthreeMareMinMcommonMuseageMtod
ay.M-MCORRECTMANSWERM-LiquidMLimit

PlasticMlimit

ShrinkageMlimit