Experimental Investigation of Corroded Steel H-Pile Repaired with Ultrahigh-Performance Concrete (Uhpc) under Eccentric Axial Compression Loads

Abstract

Corrosion-induced deterioration in steel H-piles reduces load-carrying capacity and structural performance. Replacing corroded H-piles is often impractical due to cost and accessibility constraints. This paper investigates the effectiveness of repairing severely corroded H-piles subjected to eccentric axial loads using ultrahigh-performance concrete (UHPC) plates. The UHPC plates, reinforced with carbon fiber-reinforced polymer (CFRP) grids, are bolted to the steel H-piles using high-strength bolt connectors (HSBCs). Nine full-scale 120 in. (3048 mm) long H-piles HP10x42 were repaired with UHPC plates and subjected to axial compression loads at eccentricities of 0%, 10%, and 30%. Corrosion was simulated by reducing the thickness of the flanges and web, creating cuts and voids. The repaired piled with 0.75 in. (19 mm) diameter HSBC displayed a strength increase of 348% while those with 1 in. (25.4 mm) diameter HSBC and CFRP grid exhibited a 422% increment.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

Mid-America Transportation Center, University of Nebraska-Lincoln, Grant None

Keywords and Phrases

axial load capacity; carbon fiber-reinforced polymer (CFRP) grid; corrosion; repair; steel H-pile; ultrahigh-performance concrete (UHPC)

International Standard Serial Number (ISSN)

1208-6029; 0315-1468

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2025 Canadian Science Publishing, All rights reserved.

Publication Date

01 Nov 2025

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