Adaptation of The Eligehausen Model to Experimental Results of Shear Stress at The Steel-Cement Mortar Interface Tests

Azdine Ilhame, Kissi Benaissa, Khatib Hamza

Abstract

This paper presents an adapted version of the Eligehausen bond–slip model aimed at more accurately reproducing the mechanical response of ribbed steel–cement mortar interfaces observed in direct shear tests reported in previous studies. The proposed approach introduces a refined analytical formulation that overcomes key limitations of existing bond–slip laws, particularly their inability to adequately describe the nonlinear adhesion and slip behavior characteristic of steel–mortar composite interfaces.
The objective of this research is to develop a constitutive law that more reliably characterizes the shear stress–slip relationship and reflects the actual adhesion mechanisms identified experimentally. A series of direct shear tests was conducted on high-strength cement mortar cast between two steel plates. The resulting stress–deformation curves were analyzed to identify the governing parameters of the interfacial bond mechanism.
The Eligehausen model was implemented and calibrated using MATLAB through an iterative optimization procedure designed to minimize discrepancies between experimental and analytical results. The calibrated model demonstrates a significantly improved agreement with the experimental stress–slip responses compared to the original formulation. In particular, it successfully captures both the nonlinear ascending branch and the subsequent softening behavior, which are not adequately represented by existing models.
The study introduces modified equations that enhance the physical interpretation of adhesion and frictional mechanisms at the steel–mortar interface. The proposed constitutive model provides a more accurate description of shear loading behavior and enables more reliable numerical simulations of steel–mortar composite connections.

 

Keywords: Steel–cement mortar interface; Bond–slip behavior; Adhesion mechanisms; Direct shear test; Constitutive modeling.

 

DOI https://doi.org/10.55463/issn.1674-2974.52.12.14


Full Text:

PDF


References


YANG D., LI G., ZHANG J., YUAN Y., AU F.T.K. Shear connector performance analysis for composite corrugated steel–concrete bridge decks. Journal of Constructional Steel Research, Elsevier, (2025).

ZHANG C., HUANG W., LIU Y., LI S. Experimental study on mechanical performance of corrugated steel–concrete composite bridge decks under positive and negative bending moments. Scientific Reports – Nature Publishing Group. (2025).

WANG J., CHEN X., GUO F., XU Y. Shear behavior of prefabricated steel–concrete connectors with improved bond-slip characteristics. Scientific Reports, Nature. (2024).

WANG, K., & ZHANG, H. Interfacial shear behavior in steel–concrete–steel composite slabs under cyclic loading. Engineering Structures.(2023).

THOMANN, M. Connexions par adhérence pour les ponts mixtes acier–béton. EPFL Thèse. (2025).

ZHANG, C., HUANG, W., LIU, Y. Experimental investigation of bond behavior in composite bridge girders. Engineering Structures. (2024).

H. YUAN AND H. BING. Experimental study on bond behavior between high-strength grout and deformed steel bars. Construction and Building Materials, 301:124059, 2021.

I. AZDINE, B. KISSI, AND H. KHATIB. Study of direct shear of the adhesion connectors steel-concrete. In 2nd International Conference on Innovative Research in Applied Science, Engineering and Technology (IRASET), pages 1–4, Meknes, Morocco, 2022.

I. Azdine, B. Kissi, H. Khatib, and A. Ziraoui. Analysis of the shear stress at the interface between steel and cement grout. Materials Today: Proceedings, 2025.

ILHAME, A., BENAISSA, K., HAMZA, K., ADIL, Z., MARIA, E. Experimental study on the behavior of cement grout-steel sheet interface under shear forces. Journal of Building Pathology and Rehabilitation 10, 52 (2025).

WILLIAMS PAUCHET. Adherence acier-beton. Techniques de l’Ingenieur, 2024.

ANTOINE TIXIER. Analyse du comportement de l’interface acier-béton par essai push-in : Mesures par fibres optiques et modélisation par éléments finis. Thèse de doctorat, Université de Grenoble, 2013.

R. ELIGEHAUSEN, E. P. POPOV, AND V. V. BERTERO. Local bond stress-slip relationships of deformed bars under generalized excitations. Report No. UCB/EERC-83/23, October 1983.

H. LIN, Y. ZHAO, J. OZBOLT, P. FENG, C. JIANG, AND R. ELIGEHAUSEN. Analytical model for the bond stress-slip relationship of deformed bars in normal strength concrete. Construction and Building Materials, 198:570–586, 2019.


Refbacks

  • There are currently no refbacks.