Articles

Rebar Development Length of Reinforced UHPC

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Abstract

Recently, Ultra-High Performance Concrete (UHPC) has emerged as a jointing material for accelerated bridge construction (ABC) to connect precast bridge elements. The superior bond between UHPC and rebars allows much shorter development length and simpler connection detail compared to conventional grout. Although researchers have investigated the bond and resulting development length for particular UHPCs, a general method for estimating the bond strength based on the UHPC’s material properties is missing from the literature. This research attempts to fill this knowledge gap. As the tensile strength typically governs the bond strength of UHPC, experimental and numerical analyses were performed to investigate the bond behavior of multiple UHPCs with different tensile strengths. A modification to the existing bond strength equation in ACI 318 is proposed based on the bond test results from this study and those from the literature.

Keywords: UHPC, bond, tensile strength

How to Cite:

Soliman, A. & Ranade, R., (2023) “Rebar Development Length of Reinforced UHPC”, International Interactive Symposium on Ultra-High Performance Concrete 3(1): 27. doi: https://doi.org/10.21838/uhpc.16655

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