PRESSURE FORCE, POWER FORCE AND MODULUS ELASTICITY OF CONCRETE WITH ADDITIONAL MATERIALS OF FIBER RIVER (PANDANUS ARTOCARPUS)

  • Donny Fransiskus Manalu Universitas Bangka Belitung
  • Kori Kori Universitas Bangka Belitung
Keywords: compressive strength, split tensile strength, modulus of elasticity, fiber mengkuang.

Abstract

The addition of fibers into the concrete mix can improve some mechanical properties of
concrete that increases the compressive strength, splitting tensile strength and modulus of
elasticity of concrete. Fibers used in this research of natural fibers, namely fibers
mengkuang (pandanus artocarpus) that comes from the Ranggung Village, Payung
District, South Bangka Regency. This research aims to gain compressive strength,
splitting tensile strength and modulus of elasticity of concrete plus fiber mengkuang with
experimental methods in the laboratory. The speciments in the form of concrete cylinder
diameter of 15 cm and 30 cm high. Mengkuang fiber used measuring 3 cm x 1 cm with
varying concentrations of 0% ; 0.5% ; 1% ; 2% ; and 3% of the weight of the cement.
Testing of concrete at 28 days with a fiber concentration of 0%; 0.5%; 1%; 2%; 3% yield
respectively for the compressive strength is 21.88 MPa; 22.92 MPa; 21.41 MPa; 14.15
MPa; 6.13 MPa and splitting tensile strength is 2.5 MPa; 2.17 MPa; 1.56 MPa; 2.07
MPa; 1.58 MPa, and the modulus of elasticity is 21985.18 MPa; 22500.34 MPa;
21746.98 MPa; 17677.94 MPa; 11637.04 MPa. The results of research showed that the
concrete with fiber concentration of 0.5% at the age of concrete 28 days to change the
mechanical properties of the most well against normal concrete, ie an increase in
compressive strength by 5%, and a decrease in splitting tensile strength by 13%, as well
as increased modulus of elasticity of concrete 2%. So it can be said that the use of fiber
mengkuang as an additive in concrete is one good option.

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Published
2017-12-11