Short fiber reinforced concrete (structural) / Continuous fiber reinforced concrete (structural)

[2199] EFFECT OF CONCRETE FLOW ON THE FLEXURAL BEHAVIOR OF FIBER REINFORCED SELF-COMPACTING CONCRETE BEAMS

Ramiz A. RAJU¹, Sopokhem LIM¹, Kageyama TAKUMI², Mitsuyoshi AKIYAMA² (1.Waseda University 2.早稲田大学)

Keywords:self-compacting concrete, fiber distribution, fiber orientation, X-ray image, concrete flow

The effectiveness of steel fibers in reinforcing concrete beams depends on whether a uniform distribution of fibers parallel to the axis is achieved. However, placing and compacting steel fiber reinforced concrete (SFRC) into a specimen mold by vibration can negatively affect the fiber distribution and orientation, and eventually its structural performance. This paper presents an effort for improving the structural performance of SFRC members by manipulating the high-flowability and self-placability properties of self-compacting concrete to achieve better distribution and orientation of fibers.