Influence of polypropylene fiber geometry on plastic shrinkage cracking in concrete

Plastic shrinkage cracking remains a primary concern for placements with high surface/volume ratios that are subjected to early age drying

Nemkumar Banthia

2006

Scholarcy highlights

  • Plastic shrinkage cracking remains a primary concern for placements with high surface/volume ratios that are subjected to early age drying
  • Four commercially available polypropylene fibers were investigated at dosage rates varying from 0.1% to 0.3%
  • A fiber reinforced concrete overlay is cast on a fully matured subbase with protuberances and the whole assembly is allowed to dry in an environmental chamber
  • Results indicate that while polypropylene fibers in general are effective in controlling plastic shrinkage cracking in concrete, a finer fiber is more effective than a coarser one, and a longer fiber is more effective than a shorter one
  • Fiber fibrillations appear to be highly effective in controlling plastic shrinkage cracking

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