第四届亚洲土工合成材料学术大会论文集 英文版 52.docx

Table 3 Stress crack resistance of HDPE GMs (hour)
HDPE GMs
40°C 60°C
pH=
4
pH=8
pH
=4
pH=8
Smooth CMD
21
()
218
1
41
146
MD
22
0
220
1
51
149
Textured CMD
21
0
210
1
40
147
MD
21
8
215
1
51
149
CONCLUSION
Damaged HDPE GMs showed excellent acidity -
resistance as intact HDPE GMs. There is no statistically
significant difference exists between the mean load at
yield and elongation at load corresponding to the pH
treatments whereas statistically significant difference was
found between the mean load at yield and elongation al
yield corresponding to the temperature treatments. In
acidic and alkaline conditions. HDPE GMs performed the
same stress crack resistance. The increase in temperature
and the level of loading shows the decrease in stress crack
resistance.
ACKNOWLEDGEMENTS
This work was supported by grant No. RTI04-01-04
from the Regional Technology Innovation Program of the