problems on compaction of soils in geotechnical engineering

gte

1. Numerical Problems

2. •1.TheMDDofasamplebylightcompactiontestis1.78g/ccatanOMC
of15%.Find%airvoids&degreeofsaturation.G=2.67.Whatwouldbe
thecorrespondingvalueofdrydensityonzeroairvoidslineatOMC?

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4. •2.TheThefollowingresultswereobtainedfromastandardcompactiontestona
sampleofsoil.
Thevolumeofthemouldusedwas950ml.Makenecessarycalculationsandplotthe
compactioncurvetoobtainmaximumdrydensityandoptimumwatercontent.Also
calculatethevoidratio,thedegreeofsaturationandtheoreticalmaximumdrydensity
(G=2.70).
222018161412Water Content
(%)
1.851.871.871.911.851.68Mass of Wet
soil(kg)

5. .22.20.18.16.14.12Water Content
1.851.871.871.911.851.68Mass of Wet soil (kg)
1.951.971.972.011.951.77
1.601.641.671.731.711.58
0.690.650.620.560.580.71
0.860.830.780.770.650.46
1.691.751.821.891.962.04Theoretical Maximum
dry density
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6. From plot ,
Maximum dry density = 1.74gm/ml
Optimummoisture contents= 16.2%.
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7. •3.Themaximumdrydensityofasoilsampleobtainedfromlightcompactiontestis
1.85g/ccandoptimummoisturecontentis14%.Ifthespecificgravityofsolidsis2.65,
determinethedegreeofsaturationofsoilatOMCandthedrydensitycorresponding
tozeroairvoidconditionatOMC.