This paper presents a study of the behavior of self compacting reinforced concrete with polypropylene fiber. Four self
compacting reinforecd concrete beam specimens were cast and tested in this study. Two beams were cast without fiber
and two beams were cast with polypropylene fiber. The proportion of polypropylene fiber was 0.9 kg/m
of the weight
of concrete and the proportion of silica fume was 10 % of the weight of portland cement. The dimension of the beam was
(180×260) mm with 2000 mm length. Two longitudinal bars with Ø10 mm were placed at the top of the beam as
compressive bars and three longitudinal bars with Ø10 mm were placed at the bottom of the beam as tensile bars. Shear
reinforcement with Ø8 mm with spacing of 150 mm were placed at the midle, and there were no stirrups at the shear
region. Several cylinder specimens with size of (150×300) mm and beam without reinforcement with size of
(200×200×700) mm were also cast and tested to determine the mechanics properties of concrete such as compressive
strength, tensile strength, modulus of elasticity and modulus of ruptures. The result show that the compressive strength
and modulus of elasticity of self compacting concrete with polypropylene fiber were decreased 26.98 % and 9.98 %,
respectively compare to the self compacting concrete without fiber. While the tensile strength and modulus of ruptures
of the self compacting concrete with polypropylene fiber were increased 2.76 % and 3.65 %, respectively compare to the
self compacting concrete without fiber. The shear capacities of the self compacting concrete beams without fiber were
62.76 kN and 63.44 kN. While the shear capacities of the self compacting concrete beams with polypropylene fiber were
60.77 kN and 50.61 kN.