HUBUNGAN PARAMETER KUAT GESER LANGSUNG DENGAN INDEKS PLASTISITAS TANAH DESA NEUHEUN ACEH BESAR
Abstract: This research aims
to evaluate effect of soil plasticity index (PI) to shear strength parameters,
e.i. the angle of shearing (φ) and cohesion value (c). Parameters of φ and c
obtained from Direct Shear Test in soil mechanics laboratory. The soil samples
used for the research were taken from Neuheun Village, Mesjid Raya Subdistrict,
and Aceh Besar District. Based on AASHTO soil classification, the soil sample
is a Group A-7-6, whereas based on USCS soil classification, the soil is sandy
clay of CL symbol. Soil specimen for Undisturbed Sample (UDS) and Disturbed
Sample (DS) were 20 samples respectively, each sample was made to be three sub
samples. The result of research shows that there is a linier correlation of
shearing angle to PI, i.e., φ = -0,700 IP + 47,474, R2 = 0.882 for Undisturbed
Samples (UDS) and φ = -1,757 IP + 59,313, R2 = 0.891 for Disturbed Samples
(DS). The result of research also shows there is a linier correlation of
cohesion value to PI, i.e., c = -0,053 IP + 1,569, R2 = 0.887 for UDS and c =
-0,076 IP + 1,882, R2 = 0.783 for DS. It can be concluded that shear strength
parameters for all tested samples in this research influenced by soil
plasticity index. The higher soil plasticity index resulted the lower Shear
Strength Parameters.
PENULIS: Marwan, Reza Pahlevi Munirwan, Devi Sundary
Kode Jurnal: jptsipildd130631
