THE EFFECT OF SYNTHETIC FIBER TYPE ON FRESH, HARDENED AND TOUGHNESS PROPERTIES OF HSFR-SCC

Abstract

Keywords

• Hybrid fiber reinforced self-compacting concrete
• Polypropylene fiber
• Polyvinyl-alcohol fiber
• Strength
• Toughness

THE EFFECT OF SYNTHETIC FIBER TYPE ON FRESH, HARDENED AND TOUGHNESS PROPERTIES OF HSFR-SCC

Abstract

This study presents the experimental results about the effects of Polyvinyl-alcohol (PVA) and Polypropylene (PP) fibers on the fresh and mechanical properties including compressive, splitting tensile strength, modulus of rupture (MOR) as well as toughness of the hybrid fiber reinforced self-compacting concrete (SCC). PVA and PP fibers were added into SCC mixtures having only macro steel fiber and also having binary hybridization of both macro and micro steel fiber. The results showed that the use of micro steel fiber replaced by macro steel fiber improved the workability, compressive and splitting tensile strength, MOR and toughness and also caused reduction in the weight loss percentage compared to the use of only macro steel fiber. Moreover, it was emphasized that PVA or PP enhanced the residual flexural performance of SCC, generally, while it negatively influenced the workability and the residual strengths according to the use of single steel fiber and binary steel fiber hybridization. Compared to the effect of synthetic fibers, PP had slightly more positive effect in the view of workability while PVA enhanced the residual mechanical properties more.

Keywords

• Hybrid fiber reinforced self-compacting concrete
• Polypropylene fiber
• Polyvinyl-alcohol fiber
• Strength
• Toughness

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