Influence of Fibre Aspect Ratio on the Mechanical Properties of Polypropylene and Polyolefin Fibre-Reinforced Cement Mortar
DOI:
https://doi.org/10.7492/02hp4621Keywords:
Fibre-reinforced mortar, Aspect ratio, Polypropylene fibres, Polyolefin fibres, Compressive strength, Flexural strengthAbstract
In this research the mechanical performance of cement mortar reinforced with Polyolefin (PO) and Polypropylene (PP) fibres with various
aspect ratio is studied. All mixes included a constant 0.5% of PO and PP fibre Volume to the cement content were predetermined by initial
studies. Four Different fibre lengths 55 mm, 27.5 mm, 13.75 mm and 6.8 mm were taken to develop different aspect ratio for both PP and PO
variations. Specimens were subjected to flexural and compressive test after curing in water for 28 days. It is observed that the fibre aspect ratio
will influence the strength improvement and also the mortar containing fibres with moderate aspect ratio of 15 to 17, when compared to
unreinforced mortar gives good results by increasing flexural strength more than 21.53% and compressive strength upto 7.9%. This result leads
to enhancement of load bridging at matrix cracks and superior fibre dispersion.
