Abstract
Three different volume ratio steel fiber and polypropylene fiber were mixed into concrete matrix to study the hybrid effect of fibers. Cube HFRC specimens were tested under uniaxial and triaxial load. Hybrid effects on compressive strength of the results were analyzed and compared. It was founded that there were positive and negative effects in HFRC under compression. Positive hybrid effects of HFRC could be found when volume ratios of fiber (no less than 1.0% for steel fiber and 0.1% for polypropylene fiber) were added into HFRC.
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