Abstract
Geogrids are widely present in mining areas, performing diverse functions in several situations where the geosynthetic is subjected to compaction efforts during installation. Installation damage is one of the factors that can reduce the geosynthetic characteristics and affect the available properties. Therefore, the results of analyses considering actual field conditions are necessary to evaluate the damage influence and to guide product selection, mainly because installation damage is one of the most complex degradation factors to simulate in the laboratory. The paper presents an analysis of installation damage degradation of a geogrid employed to perform a stabilization function on an unpaved access road designed for ore transportation by off-road trucks. A geogrid sample, placed between a 15 cm base layer and a geotextile acting as a separator, was submitted to compaction under actual field conditions. The control and damaged samples were evaluated in the laboratory by visual and microscopy analyses and mechanical tests. Visual analysis indicated the removal of the coating on both faces of the damaged sample, sliding of nodes (3%), and minor damage in the ribs. The microscopy analysis indicates a significant number of small particles between the filaments due to coating removal. Mechanical tests show reduction factors varying from 1.01 to 1.09 for the secant tensile stiffness modulus and equal to 1.13 for the Aperture Stability Modulus.
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The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.
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The authors thank Huesker for the geogrid samples and CAPES for the financial support.
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All authors contributed to the study’s conception and design. DOT and DdMV performed laboratory material preparation and analysis. CAT performed the field test. DdMV wrote the first draft of the manuscript and all authors commented on previous versions. All authors read and approved the final manuscript.
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Tschöke, D.O., de Mattos Vidal, D. & do Carmo, C.A.T. Installation Damage of a Geogrid Employed for Stabilization in a Mining Area. Int. J. of Geosynth. and Ground Eng. 9, 10 (2023). https://doi.org/10.1007/s40891-022-00424-9
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DOI: https://doi.org/10.1007/s40891-022-00424-9