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Article

On the Calibration of a Numerical Model for Concrete-to-Concrete Interface

Institute of Building Engineering, Faculty of Civil Engineering, Warsaw University of Technology, Al. Armii Ludowej 16, 00-637 Warsaw, Poland
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Academic Editor: Alessandro Pirondi
Materials 2021, 14(23), 7204; https://doi.org/10.3390/ma14237204
Received: 14 October 2021 / Revised: 19 November 2021 / Accepted: 22 November 2021 / Published: 25 November 2021
(This article belongs to the Section Construction and Building Materials)
The study was devoted to the numerical modelling of concrete-to-concrete interfaces. Such an interface can be found in many modern composite structures, so proper characterisation of its behaviour is of great importance. A strategy for calibration of a model based on cohesive finite elements and the elastic-damage traction–separation constitutive law available by default in the Abaqus code was proposed. Moreover, the default interface material model was enhanced with the user-field-variables subroutine to include a real strength envelope for such interfaces. Afterwards, the modelling approach was validated with numerical simulation of the most popular tests for determining the strength characteristics of concrete-to-concrete interfaces: three-point bending beam with a notch, splitting bi-material cubic specimens, and slant-shear tests. The results of own pilot studies were used as well as those reported by other researchers. The performed simulations proved the accuracy of the proposed modelling strategy (the mean ratio of ultimate forces obtained with numerical models and from experiments was equal to 1.01). Furthermore, the presented examples allowed us to better understand the basic test methods for concrete interfaces and the observed mechanisms of failure during them. View Full-Text
Keywords: concrete-to-concrete interface; cohesive elements; traction–separation law; Abaqus; fracture energy concrete-to-concrete interface; cohesive elements; traction–separation law; Abaqus; fracture energy
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MDPI and ACS Style

Dudziak, S.; Jackiewicz-Rek, W.; Kozyra, Z. On the Calibration of a Numerical Model for Concrete-to-Concrete Interface. Materials 2021, 14, 7204. https://doi.org/10.3390/ma14237204

AMA Style

Dudziak S, Jackiewicz-Rek W, Kozyra Z. On the Calibration of a Numerical Model for Concrete-to-Concrete Interface. Materials. 2021; 14(23):7204. https://doi.org/10.3390/ma14237204

Chicago/Turabian Style

Dudziak, Sławomir, Wioletta Jackiewicz-Rek, and Zofia Kozyra. 2021. "On the Calibration of a Numerical Model for Concrete-to-Concrete Interface" Materials 14, no. 23: 7204. https://doi.org/10.3390/ma14237204

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