TINJAUAN KUAT GESER SENGKANG ALTERNATIF DAN SENGKANG KONVENSIONAL PADA BALOK BETON BERTULANG
ABSTRACT: Reinforced-concrete
requires bending and shearing
reinforcement. Bending reinforcement is used to detain bending moment,
whereas shearing reinforcement (sengkang) is used to detain shearing load.
Generally, vertical shearing reinforcement has a function to detain shearing
load. Whereas horizontal shearing reinforcement is not calculated in detaining load force occured on a
beam. Vertical shearing reinforcement
prevents a beam to apart due to shear force. This research was done to find
whether horizontal shearing
reinforcement (alternative reinforcement) is required in construction.
The objectives of this research is to know the maximum shear load and the
difference between alternative reinforcement and conventional reinforcement in
reinforced-concrete beam. This research was carried out in 5 steps, i.e.,
preparation of research equipment and material;
inspection of research material quality; provision of test materia;
concrete strength compression test and
reinforced-concrete beam shear compression test; and analysis and discussion.
The research took place at Construction Material Laboratory at Civil
Engineering Department, Faculty of Engineering UMS. The number of object test
were 12 pieces, and 2 pieces of object test were used for each variation. The space
variation used were 40 mm, 80 mm and 120 mm, with reinforcement weidth 15 cm
and height 20 cm, and beam length 150 cm. According to analysis result, it is
known that maximum shear force occurred in a reinforcement with space 40 mm,
i.e., 1797,7 kgs for conventional reinforcement and 1735,2 kgs for alternative
reinforcement. Whereas, maximum shear
compression is 766,5 kgs for conventional reinforcement and 704 kgs for
alternative reinforcement, and the biggest difference between conventional
reinforcement shear compression and alternative reinforcement shear compression
is 28,31% which occurred in a reinforcement with space 80 mm, and the
difference of shear load is 8,49%. Generally, it can be said that shear
strength between conventional reinforcement and alternative reinforcement is relatively
equal.
Keywords: kuat geser, sengkang alternatif, sengkang konvensional, balok beton bertulang
Penulis: Basuki, Nurul
Hidayati
Kode Jurnal: jptsipildd060012
