Numerical Study of Concrete: A Mesoscopic Scale Simulation Methodology

被引:0
|
作者
Fernandez-Muniz, Zulima [1 ]
Montero-Chacon, Francisco [2 ]
Lopez-Colina, Carlos [3 ]
Alonso-Martinez, Mar [3 ]
del Coz-Diaz, Juan Jose [3 ]
Lopez-Gayarre, Fernando [3 ]
机构
[1] Univ Oviedo, Math Dept, Oviedo 33007, Spain
[2] Univ Loyola Andalucia, Engn Dept, Seville 41704, Spain
[3] Univ Oviedo, Construct Dept, Oviedo 33203, Spain
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 13期
关键词
mesoscopic scale; numerical model; concrete behavior; MODEL; COMPRESSION; AGGREGATE; DAMAGE;
D O I
10.3390/app14135495
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This study aims to understand and simulate the mechanical properties of concrete, focusing specifically on the mesoscopic scale and its relation to the macro scale. Investigating concrete at this level involves examining its composition as a heterogeneous amalgamation of mortar, aggregates, and the Interfacial Transition Zone (ITZ). Numerical models, utilizing the finite element method (FEM), are employed to thoroughly examine the structural behavior of concrete. The study uses MATLAB (2023a) programming to develop three-dimensional models, which are then subjected to FEM analysis. Various mesoscopic Representative Volume Elements (RVEs) are formulated, considering spherical aggregates with different locations and dimensions to capture the complex nature of concrete. MATLAB is used to generate files containing comprehensive information about the RVEs, which are then processed with FEM to simulate compression strength tests. As the complexity increases with the inclusion of the ITZ, prismatic RVEs are developed to better represent real-world conditions. The proposed mesoscopic model establishes a foundational framework for a numerical simulation methodology tailored to laboratory compression tests, bridging the gap between mesoscopic and macroscopic scales. This approach provides detailed insights into concrete behavior, elucidating deformation and fracture mechanisms. Although not a complete substitute for experimental methods, these models offer a cost-effective and efficient alternative, identifying vulnerable areas and exploring the effects of additional materials on concrete behavior. The progressive replacement of laboratory tests with numerical simulations using RVEs of specific compositions will make the study of concrete behavior at the mesoscopic scale increasingly sustainable, paving the way for more efficient and environmentally friendly research practices in the field.
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页数:16
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