TINJAUAN CBR LEMPUNG YANG DISTABILISASI DENGAN KAPUR PADA PEMADATAN SISI BASAH
ABSTRACT: Road construction
that was built on expansive clay is likely to be damaged before reaching
planned time limit, for examples:
cracking, upheaval and
settlement. It relates
to CBR value.
One of expansive
clay’s improvement that
its bearing capacity influenced by water content is lime stabilization.
Sometimes, the compaction of soil–lime stabilization is limited by wet soil
quarry condition or rainy that cause water content is greater than optimum
moisture content (OMC) on
compaction test. This
research is designed
to observe CBR
value of the
soil-lime stabilization in
the wet side compaction.The method is mixing the
former clay from Gading – Gunung Kidul with 0%, 2%, 4%, 6%, 8% and 10% of lime
from its dry weight. To observe the physical and mechanical properties changing
of soil-lime stabilization, gradation test,
specific gravity test,
Atterberg limits test,
compaction test and
CBR test are
done. CBR test
is designed in
3 days curing in the optimum and
wet side conditions, CBR test is also designed in 4 days soaking. The result
shows the soil is anorganic clay
with high plasticity or CH in USCS. In AASHTO, the soil is classified in A-7-6.
Lime stabilization with 3 days
curing can improve
physical and mechanical
properties of soil.
It can decrease plasticity index
of soil, increase shear
strength parameter, increase
CBR value and
decrease swelling potential
value. The CBR
value of the former
soil and the
mixed soil-lime in
the wet side
compaction are smaller
than the ones
in the optimum
condition, especially for the
former soil. The
CBR value of
the mixed soil-lime
in the wet
side compaction is nearly
same in the optimum compaction. The swelling goes
down as the lime adding in the wet side compaction.
Keywords: soil stabilization, lime,
CBR, wet side compaction
Penulis: Senja Rum Harnaeni
Kode Jurnal: jptsipildd070017
