STUDI MODEL EMBANKMENT TANAH DENGAN CAMPURAN KAPUR-ABU SEKAM PADI DAN SERAT KARUNG PLASTIK
ABSTRACT: The previous
research result has shown that soil stabilization that use lime, rice husk ash
and plastic sack fiber is ductile and produces high strength. This research
studies the bearing capacity and vertical displacement of embankment models to
obtain the highest bearing
capacity and the
lowest displacement of various configuration
of lime-rice husk ash-plastic fiber
mixture are compares
with that of natural soil embankment. The configuration
tested are layered, columned, covered and mixed embankments. Two variations of the base
of the embankment model are silt soil and soft clay soil. The study is limited
for the case of static loading. The main apparatus is an adjustable
displacement rate load cell. Loading is increased slowly
such that the rate of displacement is about 1 mm/minute. The loading is
ended by the occurance of failure
indicated by sudden
drop of loading
force. The vertical displacement
is read from
dial gauge indicator. The result
of the study
indicates that the
best mixture in
term of highest
bearing capacity and
lowest displacement is the mixed embankment. The measured ultimate
bearing capacity of mixed embankment reach 3625 kPa that is 111 times that of
the natural soil embankment. The failure of the natural soil embankment is at
7,0 kN loading. At this loading the measured vertical displacement of mixed
embankment is 65 % less
than that of the natural soil embankment.
keywords: embankment, lime,
rice husk ash, plastic sack fiber
Penulis: Anita Widianti, Edi
Hartono, Agus Setyo Muntohar
Kode Jurnal: jptsipildd080005
