Research Article

A Novel Technique to Utilize Second Waste of Plastic Bottle as Soil Reinforcement: A Comparative Study on Mechanical Properties with Natural Black Cotton Soil

Table 1

Laboratory result of a natural soil sample.

Test categoriesLaboratory testsList of descriptionResults

Index propertiesParticle-size distribution (PSD)Gravel0%
Sand20.62%
Silt26.46%
Clay52.92%
Atterberg limit (Casagrande cup method)LL102%
PL36%
PI66%
Natural moisture contentW38.23%
Specific gravityGS2.66

Swelling propertiesFree swell indexFree swell (Sf)110%
Differential free swell (Sdf)90.9%
Swelling potentialS12.06

Compaction testsStandard compactionMaximum dry density (MDD)1.13 g/cm3
Optimum moisture content (OMC)37.78%

Strength testsSoaked California bearing ratio (CBR)CBR2.14%
Unconfined compression strength (UCS)UCS246.54 kPa
εf8.68%

A unified soil classification system (USCS)CH (highly plastic clay) black cotton soil