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首页> 外文会议>Geotechnical Engineering in the Information Technology Age >Nondestructive Measurements of Soil Geotechnical Properties Using X-Ray Computed Tomography
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Nondestructive Measurements of Soil Geotechnical Properties Using X-Ray Computed Tomography

机译：使用X射线计算机断层扫描技术对土壤岩土特性进行无损测量

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The mechanical behavior of granular soils is highly dependent on the particle microstructure, which includes the shape, distribution, and arrangement of particles and void space. Because of the inherent difficulties in measuring soil properties on a microscale, geotechnical engineers use macro properties to estimate the response of soil when subjected to changes in the state of stress. These macro properties (void ratio, porosity, density, uniformity, etc.) are used to represent gross or average measures of the soil microstructure in terms of engineering behavior; i.e., strength, compressibility, and permeability. Non-destructive systematic test methods are described for quantifying microscale measurements of scanned digital images using x-ray computer-aided tomography (CT). Tomographic analyses conducted on five different soils indicate that x-ray CT technology provides a viable means for nondestructively observing and measuring grain size distribution, pore characteristics, and pore size distributions of soils.
机译：粒状土壤的力学行为高度依赖于颗粒的微观结构，包括颗粒的形状，分布和排列以及空隙空间。由于在微尺度上测量土壤特性存在固有的困难，因此，岩土工程师使用宏观特性来估算在应力状态变化时土壤的响应。这些宏观特性（孔隙率，孔隙率，密度，均匀性等）用于代表工程行为方面的土壤微观结构的总体或平均度量；即强度，可压缩性和渗透性。描述了使用X射线计算机辅助断层扫描（CT）定量扫描数字图像的微尺度测量的非破坏性系统测试方法。在五种不同土壤上进行的层析成像分析表明，X射线CT技术为非破坏性地观察和测量土壤的粒度分布，孔隙特征和孔径分布提供了一种可行的手段。

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