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Comparison of the effects of testing conditions and chemical exposure on geomembranes using the comprehensive testing system
Author(s) -
Stessel Richard Ian,
Barrett William Martin,
Li Xiaojun
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19981212)70:11<2097::aid-app3>3.0.co;2-j
Subject(s) - geomembrane , displacement (psychology) , materials science , modulus , composite material , polyethylene , compatibility (geochemistry) , young's modulus , psychology , psychotherapist
Chemical compatibility tests were conducted on high‐density polyethylene geomembrane samples using the Comprehensive Testing System (CTS) under low‐ and high‐displacement conditions. CTS development between the two sets of data (low‐ and high‐displacement) was found to significantly reduce the friction within the testing cell. This friction reduction was apparent from the decrease in delta modulus from the larger values obtained during low‐displacement testing to the smaller values obtained during high‐displacement testing. The results of the high‐displacement testing showed statistically significant differences between delta modulus results at the 95% confidence interval (probability = 0.050), which was not possible with the low‐displacement test configuration. Further, the high‐displacement testing showed that the more soluble the test chemical was in polyethylene, the lower the resulting delta modulus. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 2097–2110, 1998