PENGARUH PENGEKANGAN GFRP TERHADA PKEKUATAN DAN DAKTILITAS KOLOM BETON BERTULANG PERSEGI AKIBAT BEBAN SIKLIK
ABSTRACT: The aim of this
research is to get improving of strength and ductility in column specimen given
the GFRP strengthener (Glass Fiber Reinforced Polymer) toward with original
column, by using the cyclic load as the fix representative of quake load. There
are two specimens full scale used. Theyare C-1 (original column) and C-1G
(column with GFRP strengthener 1 layer). From the researchgot Pmax sequentially
is 278,9 kN and 372.4 kN, and dmax is 53.24 mm and 56.78 mm, each for C-1 and
C-1G. For C-1 column, the concrete gets damage in plastic hinge zone at drift
ratio 3.5% indicated by bending of longitudinal steel bar and spalling of cover
concrete. The test for C-1G ends in third cycle at drift ratio 5% and gets damage
in fracture of GFRP in plastic hinge zone. The damage is the changing of resin
color the circumferential direction in three spots. They are as long as 10, 11
and 18 cm. Ductility index taken on three positions are plastic hinge zone,
column with ahalf high effective and as high as effective column. From the
analyze result got ductility index C-1on the three positions are 1.65; 1.70;
1,97 and ductility index C-1G are 1,44; 1,44 and 1,38 each for plastic hinge
zone, a half high effective and as high as effective column
Penulis: Karmila Achmad, Agoes
SMD & Tavio
Kode Jurnal: jptsipildd120301
