About this Research Topic
The formation of natural geomaterials like rocks and soils has gone through a long period of geological history. The complex geological environment leads to the various microstructure of the geomaterials like the minerals, porosity, and fractures. It is widely accepted that the properties of geomaterials are closely related to the intrinsic microstructure such as chemical and mineralogical composition, grain size, and joint orientation. The use of quantitative microstructural analysis for the evaluation of macroscopic properties is a hot topic. The development of experimental and numerical methods like micro-CT and homogenization provides novel solutions to analyze the microscopic structure effect on the macroscopic behavior such as deformation features and physics of fracture. This research not only gives a better understanding of physical and mechanical behavior but also has high significance in engineering.
This research topic aims to give a comprehensive understanding of the relationship between intrinsic microstructure and macroscopic properties. The emphasis is on microstructure that can be observed with the naked eye, a scanning electron microscope or micro-CT, and the physical mechanical properties like deformation modulus, permeability, and failure mode. There are three goals in this research topic. Firstly, the recent advances in a numerical and experimental method in the analysis of microstructure effects are collected. Second, a very powerful framework to understand the macroscopic behavior incorporating theoretical, numerical, and experimental analysis is provided. Third, the qualitative and quantitative analysis of the microstructure effect and the application in geotechnical engineering is discussed.
This research topic provides a platform for publishing original articles and reviews on recent numerical and experimental advances and applications on microscopic structure effect analysis of geomaterials. We welcome high-quality papers on theoretical developments, laboratory testing, field investigations, computational methods, and case studies. Potential topics include but are not limited to the following:
1. Experimental and site characterization including 3D printing, micro-CT scanning, heterogeneous and noncontinuous feature, in-situ testing & monitoring.
2. Microstructure description and generation methods like Mont-Carlo simulation and deep learning method.
3. Advanced numerical methods such as discrete element modeling, peridynamics, meshfree method, micromechanical continuum models, fluid-solid coupling
Keywords: Microscopic structure, Macroscopic property, Heterogeneity, Numerical simulation, Experimental study
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