Modeling of Heat Transfer in Massive Concrete Foundations Using 3D-FDM

Abstract

Analyzing and modeling the thermal behavior of mass concrete elements has been widely investigated by several researchers. Lately, many contemporary finite element packages have embedded modules for analyzing thermal behavior. Unfortunately, these packages are quite complex and require experts to be properly implemented. This paper proposes a simple and practical approach using the 3D-Finite Difference Model (3D-FDM) developed by MS-Excel to overcome the complexity of the other FE models. The model is utilized to predict the thermal behavior of actual bridge pile caps (3D model) rather than the previously developed 2D models in earlier research. The results of the analysis are compared with the concrete temperatures that were experimentally obtained from the site. Site data was collected using 18 thermocouple probes (K type) that were installed in two pile caps. These thermocouples were installed before concrete pouring to monitor the temperatures generated due to the exothermic reaction of the cement, which occurs during casting and the maturity period of concrete. The readings were registered every 3 hours for 7 days after concrete placement. This research provides a comparison between the recorded site data and the thermal analysis based on the proposed 3D-FDM. Results proved that concrete temperature time histories at different locations of the bridge pile caps could be properly predicted using the developed 3D-FDM. Doi: 10.28991/CEJ-2023-09-10-05 Full Text: PDF

Modeling of Heat and Mass Transfer in Cement-Based Materials during Cement Hydration—A Review

“…Because early-age cracking due to the described thermal and moisture effects caused by the hydration is a durability concern, as it can initiate reinforcement corrosion, predicting and estimating temperature and moisture effects during concrete hardening is crucial for construction engineers to mitigate these issues. This is evidenced by numerous scientific articles and reported engineering problems [10][11][12][13][14].…”

“…The details of the applied models are provided in the next sections. [34] thermal analysis/thermal property prediction model based on the experiments, hydration kinetics, and composite material equivalence theory Mirković U. et al [35] thermal analysis/FEM/Lusas Academic software (Available online: https://www.lusas.com (accessed on 1 March 2022))/validation Zhang J. et al [12] fully coupled hygro-thermo-mechanical model/FEM/validation Sumarno A. et al [36] thermal analysis/2D model Zhang S. et al [37] thermal fields/numerical simulation/ABAQUS 2021/validation Yu H. et al [38] thermal fields/numerical simulation/validation 2023 Mansour D. et al [13] thermal analysis/3D-finite difference model/MS Excel Van Tran M. et al [39] thermal analysis/numerical simulation/Ansys Fluent software/validation Cai Y. et al [40] thermal field/3D-FEM simulation/ABAQUS/validation Lajimi N. et al [41] hygro-thermal analysis/numerical simulation/DIGITAL Visual FORTRAN 95 Ebid A. M. et al [14] State of the art on heat and mass transfer in self-compacting concrete and geopolymer concrete Wasik M. et al [42] the prototype of the experimental stand for heat and moisture transfer investigation in building materials Zhu J. et al [43] temperature field analysis/mesoscale simulation Prskalo S. et al [44] multi-field model/finite element code PANDAS Yin H. et al [45] multi-field model/3D flow lattice model (FLM) Rossat D. et al [46] thermo-hydro-mechanical model/FE simulation/validation Lyu C. et al [47] thermo-hydro-force coupling model/FE simulation/COMSOL Multiphysics/validation Li X. et al [48] thermal analysis/FEM/Midas FEA software/validation Meghwar S. L. et al [49] moisture diffusion/FE simulation/validation 2022 Yikici A. et al [50] thermal analysis/3D numerical model/finite volume method (FVM)/MATLAB/validation Cheng P. et al [51] coupled thermo-hydro-mechanical-phase field/2D numerical simulation/Fortran/The Intel ® oneAPI Math Kernel Library PARDISO Bondareva et al [52] mathematical model of the unsteady coupled heat and mass transfer in concrete containing PCM/validation Mostafavi S.A. et al [53] thermal model/MATLAB Zhang Z. et al [54] moisture transport/2D computational fluid dynamics (CFDs) model Smolana A. et al …”