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Unformatted text preview: CONCLUSIONS
The retention ratio of
tensile strength of geotextile
composites
after
being
exposed to ultraviolet rays was
about 80% and showed a
greater stability to ultraviolet
rays as the weight of PET
geotextile in the geotextile
composites increased.
Geotextile
composites
exhibited an increase in
retention ratio of tensile
strength as PP geotextile in the
composites increased, after
being exposed to ultraviolet
rays.
The stability of geotextile
composites under various
chemical conditions showed
80%-90% retention ratio of
tensile properties to exhibit a
rather stable property while
being immersed in an acid
buffer solution of pH 3 and 12
and leachate, which was
collected in a refuse dump.
In reality, the construction
sites where geotextiles are
used as water barrier liner are
exposed to not only ultraviolet
rays but day lights with heat,
rains, temperalure, humidity
and oxygen, etc.
These
environmental
factors impact the overall
characteristics of geotextiles REFERENCES
simultaneously. Thus, future
research to examine the
weatherability of geotextiles to
these factors is needed. ACKNOWLEDGEMENTS
Baker TL (1997) Proceedings
of
'97
Geosynthetics
Conference 3: 829
Koerner GR, Hsuan GY,
Koerner RM (1998) J. of
Geotechnical
and
Geoenvironmental
Engineering 124:1
Artires O. Gaunet S, Bloquet
C (1997) Geosynthetics
International 4:393
Mathur A et al. (1994)
Geotextiles
and
Geomembranes 13:591
Salman A el al. (1997)
Proceedings
of
'97
Geosynthetics Conference
1:217
ASTM International (2007)
ASTM
D
4355-07
Standard Test Method for
Deterioration
of
Geotextiles by Exposure to
Light. Moisture and Heat 2
9 in a Xenon Arc Type
Apparatus,
West
Conshohocken, PA, USA
ASTM International (2005)
ASTM
G
155-05a,
Standard
Practice
for
Operating Xenon Arc Light
Apparatus for Exposure of
Non-Metallic
Materials
West Conshohocken. PA.
USA EPA (1997) EPA 9090 test
method.
Environmental
Protection Agency, USA
ASTM International (2007)
ASTM D5034. Standard
Test Method for Breaking
Strength and Elongation of
Textile Fabrics (Grab Test),
West Conshohocken. PA,
USA This work was supported by grant No. RTI04-01-04 from the
Regional Technology Innovation Program of the Ministry of
Commerce. Industry, and Energy (MOCIE). 2
9 ...
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