|
Title |
Effect of Placement Direction of Concrete on Compressive Strength and Size Effect of Specimens Using MSFEM
|
|
Authors |
임진선(Jin-Sun Lim) ; 최석환(Sokhwan Choi) ; 박연동(Yon-Dong Park) ; 정영도(Young-Do Jeong) ; 이성태(Seong-Tae Yi) |
|
DOI |
https://doi.org/10.4334/JKCI.2022.34.1.083 |
|
Keywords |
중규모크기; 압축강도; 크기효과; 타설방향; 가력방향 meso-scale; compressive strength; size effect; placement direction; loading direction |
|
Abstract |
Numerical study on the effect of concrete placement direction and loading direction on compressive strength and size effect of specimens was carried out using MSFEM (meso-scale finite element method). Prior to the main analysis, the method of defining concrete as a meso-scale composite and multi-phase was described. The concrete was assumed to be a composite material having three phases of aggregates, cement matrix, and ITZ, and the material properties of each phase were applied. The uni-axial compressive failure behavior of concrete was analyzed by the constructed numerical model, and the compressive strength and size effect were confirmed through this analysis. In addition, the performance of the numerical model was evaluated by comparing the experimental results with the numerical results. Finally, the correlation between compressive strengths with size, shape, and placement direction of specimens were investigated.
|