INFLUENCE OF PLUNGER FRICTION ON CALIFORNIA BEARING RATIO OF LOW PLASTICITY CLAY SOILS
DOI:
https://doi.org/10.11113/mjce.v26.15893Keywords:
CBR, plunger friction, UCS, OMC.Abstract
Rehabilitation and retrofitting of existing pavements justify the residual strength assessment to guide implementation of necessary life enhancement exercise and have necessarily become a primary task of the highway construction industry. Laboratory California Bearing Ratio (CBR) tests were performed at various moisture contents such as OMC-1%, OMC and OMC+1% (OMC = Optimum Moisture Content). The values of CBR are calculated with and without plunger side friction. The moisture content increases from OMC -1% to OMC, there is an increase in CBR and further increase of moisture content from OMC to OMC+1%, there is a decrease in CBR. The CBR estimated considering plunger friction showed about 0.32 to 2.72% increment as compared to the laboratory CBR estimated without considering plunger friction. Similarly The moisture content of samples varying from OMC-1% to OMC+1%, there is increase in UCS and cohesive strength up to OMC and from OMC onwards, there is decrease in Unconfined Compressive Strength (UCS) and undrained cohesive strengthReferences
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