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Proceedings Paper

Development of a multi-scale packing methodology for evaluating fate and transport processes of explosive-related chemicals in clayey soils
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Paper Abstract

Detection of explosive-related chemicals (ERCs) derived from landmines sources is influenced by fate and transport processes. Characterization and quantification of the effects of environmental factors on the fate and transport behavior ERCs near soil surface environments requires the development of physical models that can mimic the conditions found in the field. The development of the scalable systems and methods involves proper reproduction of soil composition, lithology and structures, appropriate placement of boundary conditions, and suitable simulation of representative environmental conditions. This paper evaluates the ability of different packing methods for clayey soils to attain physical and transport properties representative of field conditions, and which can yield reproducible results across different scales and dimensions. Characteristics and reproducibility of packing properties is evaluated in terms of soil bulk density, porosity, flow capacity and particle size distribution. The packing methods were tested under different water content conditions and they are described as infiltration packing, saturation packing, plastic limit packing, inverse infiltration packing, induced settling packing, and vibration packing. The systems were evaluated for consistent bulk density, porosity, flow capacity and particle size distribution with depth. Preliminary results exhibit satisfactory bulk density and porosity values for the vibration packing method under field water content conditions, ranging from 1.15 to 1.31 g cm-3 and from 42 to 44%, respectively. This method also shows acceptable flow capacity and the particle size distribution that is found in the field.

Paper Details

Date Published: 7 May 2007
PDF: 10 pages
Proc. SPIE 6553, Detection and Remediation Technologies for Mines and Minelike Targets XII, 65531M (7 May 2007); doi: 10.1117/12.719882
Show Author Affiliations
Sylvia Rodríguez, Univ. of Puerto Rico Mayagüez (United States)
Ingrid Padilla, Univ. of Puerto Rico Mayagüez (United States)
Sangchul Hwang, Univ. of Puerto Rico Mayagüez (United States)

Published in SPIE Proceedings Vol. 6553:
Detection and Remediation Technologies for Mines and Minelike Targets XII
Russell S. Harmon; J. Thomas Broach; John H. Holloway, Editor(s)

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