RESEARCH ON THE DEVELOPMENT OF LOW-TEMPERATURE-RESISTANT FAST-CURING STRUCTURAL ADHESIVE AND STEEL PLATE STRENGTHENING CONCRETE BEAM FLEXURAL TEST

Authors

  • Guanhua Zhang
  • Chengzhe Song
  • Xihang Han 13897943859
  • Bo Lu

DOI:

https://doi.org/10.14311/CEJ.2024.01.0006

Keywords:

Epoxy resin structural adhesive, Low temperature rapid curing, Steel plate strengthening method, Concrete structure, Debongding failure

Abstract

Steel plate strengthening method is a common, efficient, and mature reinforcement method that utilizes structural adhesive to bond steel plates with concrete components to work together. It takes advantage of the excellent tensile strength of steel plates to improve the mechanical properties of the original structure. However, epoxy-based structural adhesives are highly sensitive to the environment, and curing effect at low temperatures is a key issue. This study developed a low-temperature-resistant fast-curing structural adhesive (LTR-FCA) that can achieve rapid curing at low temperatures of -5 °C. The flexural performance of reinforced concrete beams strengthened with steel plates using LTR-FCA was compared with that using Normal Structural Adhesive (NSA). Experimental results indicated that LTR-FCA could rapidly cure at a low temperature of -5°C. Compared to NSA, which cures at room temperature, the use of LTR-FCA effectively delayed the debonding of the steel plates.

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Author Biographies

  • Guanhua Zhang

    Guanhua Zhang received his Ph.D. degree from Tongji University in 2012. He is currently a R&D Director in Liaoning Transportation Planning and Design Institute Co., Ltd.He has won nearly 20 provincial and ministerial awards such as "Outstanding Scientific and technological Worker of Liaoning Province", "Hundred-level talents of Liaoning Province".His research interests are Bridge maintenance technology and new structure for highway bridge.

  • Chengzhe Song

    Chengzhe Song received his master's degree from Harbin Institute of Technology in 2014. He is currently a R&D staff member of Liaoning Transportation Planning and Design Institute Co., Ltd. His research interests are the materials for bridge durability enhancement and the connection materials for fabricated bridge.

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Published

2024-04-30

Issue

Vol. 33 No. 1 (2024)

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Articles

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