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ASTM Selected Technical Papers
Testing and Performance of Geosynthetics in Subsurface Drainage
By
LD Suits
LD Suits
1New York Department of Transportation;
Symposium Co-chairman and Editor
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JB Goddard
JB Goddard
Editor
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JS Baldwin
JS Baldwin
Editor
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ISBN-10:
0-8031-2860-6
ISBN:
978-0-8031-2860-6
No. of Pages:
132
Publisher:
ASTM International
Publication date:
2000

A modified implanted Gradient Ratio (GR) test system was proposed in the study. In comparison with the conventional GR test device, all the piezometers are implanted into the soil specimen, and an additional piezometer is installed at soilgeotextile interface, in order to precisely measure 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 are the mixture of the Ottawa sand and various percentages of weathered mudstone. Three hydraulic gradients were used in the GR tests. The results of the study indicated that the modified implanted GR test system is able to provide pore pressure head measurement within the test specimen. In general, GR values obtained from the implanted GR test system are greater than those obtained from the conventional GR tests.

1.
Li
,
B.
,
Curiskis
,
J. I.
and
Griffith
,
R. E.
, “
A Study of Some Key Factor on Geotextite Hydraulic Property Measurement
,” Fifth International Conference n Geotextile, Geomembranes and Related Products,
Singapore
, 5–9 September 1994.
2.
Bhatia
,
S. K.
,
Qureshi
,
S.
, and
Kogler
,
R. M.
, “
Long-Term Clogging Behavior ofNon-Woven Geotextile with Silty and Gap-graded Sands
,” GeosyntheticTesting for Waste Containment Application, ASTM STP 1081,
Koerner
Robert M.
, Ed.,
American Society for Testing and Materials
, Philadelphia,PA,
1990
.
3.
Faure
,
Y.
and
Goure
,
J. P.
, “
Soil-Geotextile Interaction in Filtration Systems
,” 3rd International Conference on Geotextile,
Vienna, Austria
,
1986
.
4.
Calhoun
,
C. C.
 Jr.
, “
Development of Design Criteria and Acceptance Specifications for Plastic Filter Cloths
,” Technical Report S-72-7,
U.S. Army Engineer Waterways Experiment Station
, Vicksburg, Mississippi,
06
1972
.
5.
Williams
,
N. D.
, and
Abouzakhm
,
M. A.
, “
Evaluation of Geotextile/Soil Filtration Characteristics Using the Hydraulic Conductivity Ratio Analysis
,”
Transportation Research Board
,
1989
, pp. 1–26.
6.
Williams
N. D.
and
Luettich
S. M
, “
Labortory Measurement of Geotextile Filtration Characteristics
,” 4th International Conference on Geotextiles Geomembranes and Related Products,
the Hague, Netherlands
,
1990
, pp. 273–278.;
7.
Fannin
,
R. J.
,
Vaid
,
Y. P.
, and
Shi
,
Y.
, “
A Critical Evaluation of the Gradient RatioTest
,”
Geotechnical Testing Journal
 0149-6115, GTJODJ, Vol.
17
. No
1
,
03
1994
, pp.35–42.
8.
Fannin
,
R. J.
,
Vaid
,
Y. P.
,
Palmeria
,
E. M.
, and
Shi
,
Y. C.
, “
A Modified Gradient Ratio Test Device
,” Recent Developments in Geotextile Filter and Prefabricated Drainage Geocomposites, ASTM STP 1281,
Bhatia
Shobha K.
and
Suits
L. David
, Eds.,
American Society for Testing and Materials
,
1996
.
9.
Chang
,
D. T. T.
, and
Nieh
,
Y. C.
, “
Significance of Gradient Ratio Test for Determining Clogging Potential of Geotextile
,” Recent Developments in Geotextile Filters and Prefabricated Drainage Geocomposites, ASTM STP 1281,
Bhatia
Shobha K.
and
Suits
L. David
, Eds.,
American Society for Testing and Materials
,
Philadelphia
, PA,
1996
.
10.
Rollin
,
A.
,
Andre
,
L.
and
Lombard
,
G.
, “
Mechanisms Affecting Long-Term Filtration Behavior Geotextile
,”
Journal of Geotextile and Geomembranes
, Vol.
7
,
1988
, pp. 119–145.
11.
Haliburton
,
T. A
and
Wood
,
P. D.
, “
Evaluation of the U.S. Army Corps of Engineers Gradient Ratio Test for Geotextile Performance
,” Proceedings of the 2nd International Conference on Geotextiles,
Las Vegas
, Vol
1
,
1982
, pp. 97–101.
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