Title:
Repairing With Hybrid-Fiber-Reinforced Concrete
Author(s):
Nemkumar Banthia and Vivek Bindiganavile
Publication:
Concrete International
Volume:
23
Issue:
6
Appears on pages(s):
29-32
Keywords:
DOI:
Date:
6/1/2001
Abstract:
With the objective of developing very high performance fiber-reinforced concrete composites, the combined use of macro- and microfibers of steel in the same mixture were investigated. The macrofiber employed was a flattened-ends steel fiber with a length of 30 mm and a diameter of 0.7 mm. The micro-fiber used was a steel microfiber, 4.5 mm long and 80 microns in diameter. It was seen that the hybrid fiber composites were not only stronger in compression and flexure, but also depicted a greater energy absorption capability in flexure than those reinforced with only a macro-fiber. The newly developed hybrid composites were then applied at an on-going repair project on a parking garage in Vancouver.