Applicability Review of Degradable Resin Based Green Geosynthetics and Suggestion of Degradability Evaluation for Environmental Conservation

초록

The basic technology trend and concept of biodegradable geosynthetics is reflected to eco-environmental growth in civil engineering fields. Furthermore, although durability of geosynthetics should be emphasized for long-term service period, durability controlled mechanism could be required to fulfill the short-term degradability purpose for biodegradable geosynthetics. Biodegradable geosynthetics are made of eco-environmental polymeric resins or natural materials and they must maintain their needed performance such as durability, design strength, hydraulic property etc. during service period in the application field. Then, after service period they should be degraded no harmful state in the soil structures. The important concept of biodegradable geosynthetics is focused on their degradable behaviors of used resins and needed performance for engineering qualification with technical data of designing. In this study, technical availability of biodegradable geosynthetics of PLA (poly lactic acid) was introduced and reviewed to be related to the quantitative analysis of degradability of biodegradable geosynthetics by conceptual consideration through its evaluation. Through the overall review of degradability of biodegradable geosynthetics, it is seen that biodegradable mechanism could be controlled control theoretically and to control degradability of PLA used biodegradable geosynthetics, more restricted design technology must be adopted in the quality control and assurance of manufacturing and construction procedure in the installation field. To evaluate the degradability of biodegradable geosynthetics performance, new test methods should be introduced and the needed evaluation items should be selected by considering influence parameters on the long-term performance under real field installation conditions.