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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2860-6
ISBN: 978-0-8031-2860-6
... above the pipe invert with no indication of clogging. Based on these results, use of geotextile sock in conjunction with a sand envelope is recommended for future toe drain installations in areas with fine-grained native soils. geotextile sock knitted drainpipe toe drain perforations testing...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2860-6
ISBN: 978-0-8031-2860-6
... the pore pressure variation of the soil-geotextile system. By using the modified GR test apparatus, 120 tests were conducted to study the clogging behavior of soil-geotextile system. Four types of needle-punched nonwoven geotextiles and five gap-graded soil mixtures were used in the program. These soils...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2420-1
ISBN: 978-0-8031-2420-2
... Problems with clogging in pressure distribution systems have been reported (Shoemaker et al. 1987, Hoover et al. 1991) and can result in system failure, increased maintenance, and limited use of appurtenances such as timers. Therefore, Maryland sought a pressure distribution network design...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2047-8
ISBN: 978-0-8031-2047-1
... method, which provides a volumetric pore size. This test identifies the constriction size of each pore channel in a geotextile, where retention and clogging are most critical. The bubble point test method is advantageous because it provides for the complete pore size distribution of the geotextile, can...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2047-8
ISBN: 978-0-8031-2047-1
... independent of normal stress. geotextiles filtration gradient ratio piping clogging 1L Jonathan Fannin, 1Yoginder P. Vaid, 1Ennio M. Palmeira,2 and Yucheng C. Shi3 A MODIFIED GRADIENT RATIO TEST DEVICE REFERENCE: Fannin, R. J., Vaid, Y. P., Palmeira, E. M., and Shi, Y. C., "A Modified Gradient...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2047-8
ISBN: 978-0-8031-2047-1
... This paper presents a comprehensive evaluation and synthesis of the literature on clogging resistance of geotextile. The soils used ranged from sand through silt to fine-grained clay. Fifteen types of geotextile including both woven and nonwoven materials were used. The latter included heat...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2047-8
ISBN: 978-0-8031-2047-1
... of retaining wall drains and erosion control systems. Considering the field data as “ground truth” information, they are compared with the existing permeability, soil retention and excessive-clogging criteria that have been proposed in the literature for design purposes. The current Federal Highway...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1996
ISBN-10: 0-8031-2047-8
ISBN: 978-0-8031-2047-1
... permeability. Finally, the larger aggregates were also associated with an increase in subgrade particle entrapment within the geotextile structure. geotextile pumping clogging road drainage filtration opening size Jean Lafleur 1, Marwan Assi2 and Jacek Mlynareld BEHAVIOR OF NONWOVEN GEOTEXTILES...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1456-7
ISBN: 978-0-8031-1456-2
... to obviate any clogging problems. Filtration criterion for the non-woven geotextiles are still evolving. The existing filter criteria are not applicable for silty and gap-graded soils. In this paper, the results are presented for six different nonwoven geotextiles which are tested with eighteen different gap...