The development of green geosynthetics, its background and technical concerns, are discussed using research results on polylactic acid (PLA) samples. A test method to evaluate biodegradability of PLA as a green geosynthetic is considered and suggested. The results show that the concept of biodegradability of green geosynthetics is applicable for many environmental applications. As a raw material for green geosynthetics, PLA 4032D (NatureWorks LLC)/PBAT (polybutylene adipate-co-terephthalate, BASF) (80/20) blend shows improvement of environmental performance as a green geosynthetic over that of PLA 4032D alone.
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