Book
Evaluation of geomembranes made from different blends of polyethylene
01 Jan 1995
Abstract
Nine geomembranes with density values ranging between 0.942 and 0.955 g/cc were produced using various types of virgin polyethylene resins, which include linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), and high density polyethylene (HDPE). Six of the nine geomembranes were prepared by blending two types of the above polyethylenes. The other three were non-blended and consisted of two types of MDPE and HDPE. The effects of the blending were investigated by conducting tests to evaluate their macroscopic and microscopic properties. The macroscopic behavior was evaluated using four different mechanical tests whereas microscopic behavior was examined via four physical and thermal analysis tests. The results indicate that the majority of properties were influenced by the blending. The tensile modulus, yield stress, puncture strength and stress crack sensitivity all showed a decreasing trend as the low density component increased in the blends. This is mainly contributed from the changes in the density and crystallinity of the materials which exhibit a linearly decreasing trend as the low density component increases. The melt index value at Condition E and FRR did not show any correlation with the stress crack resistance of the geomembranes in this study.
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Details
- Title
- Evaluation of geomembranes made from different blends of polyethylene
- Creators
- Y HsuanG YimR Koerner
- Resource Type
- Book
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 0935803033; 9780935803037; 991019183966104721