Experimental Investigation on Compressive Behavior of the PVA-Steel Hybrid Hiber Reinforced Cementitious Composites
In order to achieve the whole process control of crack formation and compressive deformation property of engineered cementitious composites(ECC),the PVA-steel hybrid fiber reinforced cementitious com-posites(HyFRCCs)were formulated through the addition of steel fiber to conventional ECC.Employing PVA fi-ber content,steel fiber content,and steel fiber length-to-diameter ratio as adjustable parameters,22 sets of Hy-FRCC samples with diverse mix ratios were meticulously conceived and manufactured.The mechanical character-istics of HyFRCCs under uniaxial compression were systematically examined via axial compression tests.A com-prehensive analysis was conducted to discern the impact of fiber content,type,and geometric attributes on the compressive properties of HyFRCCs.The results indicate that PVA fiber content,steel fiber content,and steel fiber length-to-diameter ratio exert minimal influence on the axial compressive strength of HyFRCCs.The intro-duction of fiber hybridization,however,notably enhances both the peak strain and post-peak ductility of the ma-terial,resulting in a significant improvement in the crack control and compressive deformation capabilities of Hy-FRCCs.
hybrid fiberengineered cementitious compositescompressive deformation propertycrack control
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