| Summary: |
Geotechnical and mechanical behaviour of soil stabilized with lime-rice husk ash
and strengthened by randomly placed plastic fiber depends on the portions of the
added materials and curing time. This research investigates the effect of the waste
plastic sack fibers portion and the curing time to the stress – strain relationship and
to the shear strength parameters of the mixture. In this study the portions of lime and
rice husk ash were set as constant to the value of 12% and 24% respectively. The
effect of four waste plastic sack fibers portion variation from 0.1% to 0.8% was
measured by unconsolidated-undrained triaxial test. The samples were tested at 7, 14
and 21 days after mixing. In general, according to the test result, the inclusion of
randomly waste plastic sack fiber and curing time have enhanced the shear strength
parameters, the peak stress and the strain before failure. With 0.2% fiber content,
the cohesion and the internal friction angle values of the samples have increased
335% and 409% respectively compared with those of the samples having no added
materials.
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