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13 (1) 2023

3D numerical investigation of functionally graded concrete


Author - Affiliation:
Nguyen Ngoc Hau - University of Science and Technology, The University of Danang, Danang City , Vietnam
Le Thanh Cuong - Ho Chi Minh City Open University, Ho Chi Minh City , Vietnam
Corresponding author: Nguyen Ngoc Hau - nnhau@dut.udn.vn
Submitted: 29-09-2022
Accepted: 01-02-2023
Published: 05-04-2023

Abstract
In the design of engineering structures, concrete is assumed to have homogeneously mechanical properties. However, in reality, the concrete material is usually not uniform with respect to the height of structures because segregation mostly occurs during construction. The higher density is presented at, the lower part of the structure due to a higher proportion of aggregate and vice versa. Moreover, the disparity of creep, shrinkage, hydration heat, and curing method also leads to the difference in the quality of concrete. Therefore, it is necessary to study the responses of a concrete element with various mechanical properties. In this study, the functional elastic modulus of concrete material (FGC) is investigated numerically for its effects on the static responses of the element under axial compression. Conventional Finite Element Method (FEM) and Meshless method are used to model the structure. The reliability of the numerical model is validated by comparing the obtained results with experimental data.

Keywords
axial compression; functional elastic modulus; FEM; meshless; segregation; static responses

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Nguyen, H. N., & Le, C. T. (2023). 3D numerical investigation of functionally graded concrete. Ho Chi Minh City Open University Journal of Science – Engineering and Technology, 13(1), 45-51. doi:10.46223/HCMCOUJS.tech.en.13.1.2497.2023


References

Gan, B. S., Aylie, H., & Pratama, M. M. A. (2015). The behavior of graded concrete, an experimental study. Procedia Engineering, 125, 885-891. doi:10.1016/j.proeng.2015.11.076


Guo, J., Lin, W., Qin, X., Xu, Y., & Dong, K. (2022). Mesoscopic study on fracture behavior of fully graded concrete under uniaxial tension by using the phase-field method. Engineering Fracture Mechanics, 272(7/8), Article 108678. doi:10.1016/j.engfracmech.2022.108678


Hidayat, A., Purwanto, Puspowardojo, J., & Aziz, F. A. (2015). The influence of graded concrete strength on concrete element. Procedia Engineering, 125, 1023-1029. doi:10.1016/j.proeng.2015.11.157


Ozyildirim, H. C., & Lane, D. S. (2003). Evaluation of self-consolidating concrete. Retrieved May 10, 2022, from https://rosap.ntl.bts.gov/view/dot/19585


Ramu, I., & Mohanty, S. C. (2014). Modal analysis of functionally graded material plates using finite element method. Procedia Materials Science, 6, 460-467. doi:10.1016/j.mspro.2014.07.059


Sayyad, A. S., & Ghugal, Y. M. (2019). Modeling and analysis of functionally graded sandwich beams: A review. Mechanics of Advanced Materials and Structures, 26(21), 1776-1795. doi:10.1080/15376494.2018.1447178


Yazhini, E., & Chithra, R. (2022). Performance study of fibre reinforced functionally graded concrete pipes. Construction and Building Materials, 344, Article 128224. doi:10.1016/j.conbuildmat.2022.128224



DOI: https://doi.org/10.46223/HCMCOUJS.tech.en.13.1.2497.2023
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