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Micro-tomographic techniques applied to particulate solids based products characterization

机译:显微层析技术应用于基于颗粒固体的产品表征

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摘要

The characterization of particulate solids based products resulting from the mixing of different particulate solids, characterized by different size class distribution, different morphology and different chemical-physical attributes is always difficult. Such a difficulty, both for coherent and incoherent products manufacturing, is mainly related to establish a correlation between originating particles attributes and final detectable product characteristics. The study was addressed to detect and investigate the internal structure of three different pre-mixed and ready to use plasters characterized by different porosities when set to work. Their 3D internal structure, in terms of topological assessment of utilized particulate solids and resulting porosity, was analyzed. 3D reconstruction algorithms where developed to allow a full characterization of the samples in terms of voxels based domains: matrix, aggregates and pores. The developed set of procedures, being able to realize a 3D topological mapping of the different plaster constituents, can be also profitably applied for the characterization of many other different products where the spatial identification of the different constituting elements, both in terms of dimension and position, represents the primary goal to develop and set-up innovative quality control actions of particulate solids based products.
机译:由不同的颗粒状固体的混合产生的基于颗粒状固体的产物的表征始终是困难的,其特征在于不同的尺寸类别分布,不同的形态和不同的化学-物理属性。对于相干和不相干产品的制造,这种困难主要与建立原始粒子属性和最终可检测产品特性之间的相关性有关。该研究的目的是检测和研究三种不同的预混粉并准备使用时具有不同孔隙率的灰泥的内部结构。根据使用的颗粒状固体的拓扑评估和所产生的孔隙度,分析了其3D内部结构。开发了3D重建算法,以根据基于体素的域(基质,聚集体和孔)全面表征样品。所开发的一套程序能够实现不同灰泥成分的3D拓扑图绘制,也可以有益地用于表征许多其他不同产品,其中在尺寸和位置方面对不同构成元素进行空间识别代表开发和设置基于固体微粒产品的创新质量控制措施的主要目标。

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