HYDRAULIC COMPATIBILITY OF GEOTEXTILES FILTERING RECYCLED MATERIALS

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dc.contributor.advisorAYDILEK, AHMET Hen_US
dc.contributor.authorODABASI, EMREen_US
dc.contributor.departmentCivil Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2018-09-13T05:44:34Z
dc.date.available2018-09-13T05:44:34Z
dc.date.issued2018en_US
dc.description.abstractLarge amounts of natural aggregate and manufactured materials are needed every year to support highway construction and rehabilitation in the United States. It is important that new construction materials be developed to improve the performance of highway systems, while at the same time providing cost-effective and sustainable technologies. Use of recycled materials instead of earthen materials is one way to improve sustainability of highway infrastructure. Similar benefits exist when sustainability is infused into designing modern landfill covers. Since geotextile filters and separators are used in such construction schemes, hydraulic compatibility of recycled materials with geotextile filters and long-term performance of these geotextiles are essential. A series of long-term filtration (LTF) tests were performed to evaluate the hydraulic compatibility of several woven and nonwoven geotextiles with four recycled materials commonly used in construction (recycled concrete aggregate, recycled asphalt pavement, foundry sand and recycled asphalt shingle). Upon completion of the LTF tests, grain size analyses, permittivity tests, image analyses, and piping measurements were conducted to investigate the clogging and retention behavior of the geotextiles. The results indicated that majority of the recycled materials tested were compatible with the nonwoven and woven geotextiles. Excessive piping was not observed even under relatively high hydraulic gradients. Permittivity and percent open area (POA) were the main parameters that influence the clogging and retention performance of nonwoven and woven geotextiles, respectively. The success of the existing criteria in predicting the filtration performance was inconsistent, suggesting that a detailed parametric study was needed to propose new filter criteria for these materials.en_US
dc.identifierhttps://doi.org/10.13016/M21G0HZ30
dc.identifier.urihttp://hdl.handle.net/1903/21372
dc.language.isoenen_US
dc.subject.pqcontrolledCivil engineeringen_US
dc.subject.pquncontrolledFilter criteriaen_US
dc.subject.pquncontrolledFiltrationen_US
dc.subject.pquncontrolledGeosyntheticsen_US
dc.subject.pquncontrolledGeotextileen_US
dc.subject.pquncontrolledHighway systemsen_US
dc.subject.pquncontrolledRecycled Materialsen_US
dc.titleHYDRAULIC COMPATIBILITY OF GEOTEXTILES FILTERING RECYCLED MATERIALSen_US
dc.typeThesisen_US

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