Improved Early-Age Cohesive Stress Response from Hybrid Blends of Micro and Macro Fibers
Keyword(s):
The fracture response of macro polypropylene fiber reinforced concrete (PPFRC) and hybrid blend of macro and micro polypropylene fiber reinforced concrete (HyFRC) are evaluated at 1, 3, 7 and 28 days. There is an improvement in the early-age fracture response of HyFRC compared to PPFRC. The changing cohesive stress-crack separation relationship produced by ageing of the concrete matrix is determined from the fracture test responses. An improved early-age cohesive stress response is obtained from the hybrid blend containing micro and macro fibers. The hybrid fiber blend also has a higher tensile strength at early age when compared to an identical volume fraction of macro polypropylene fibers.
2011 ◽
Vol 219-220
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pp. 1601-1607
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2011 ◽
Vol 261-263
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pp. 171-177
2014 ◽
Vol 584-586
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pp. 1355-1361
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2019 ◽
Vol 103
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pp. 102250
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2014 ◽
Vol 638-640
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pp. 1550-1555
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