Investigation on the Mechanical Properties of Fiber Reinforced Recycled Concrete
Abstract: The flexural
strength of conventional concrete material is known to be enhanced by
incorporating a moderate volume-fraction of randomly distributed fibers.
However, there is limited information on describing the influence of fiber
volume-fraction on the compressive and flexural strength of recycled coarse
aggregate concrete (RCA-C) material. This paper reports on experimental test
results of the RCA-C material replaced with 0, 30, 50 and 100% recycled
aggregate and 0, 0.5, 1 and 1.5% steel fiber volume fraction. Three-point
flexural tests of notched prism specimens were completed. The mechanical
properties in compression were characterized using cube specimens. Significant
improvement in compressive and flexural strength of RCA-C was found as fiber
content increased from 0 to 1.5%. The experimental test results of RCA-C were
further evaluated to investigate the influence of fiber content on flexural
toughness. According to test results, the addition of steel fibers to RCA-C
material appreciably increased the flexural toughness.
Keywords: Recycled Concrete,
Recycled Aggregate, Steel Fiber, Compressive Strength, Flexural Strength,
Toughness
Penulis: Hasan Jalilifar,
Fatholla Sajedi, Sadegh Kazemi
Journal Code: jptsipilgg160010
