A Study on Test Method for Evaluating Root Resistance in Waterproofing and Root Resistance Membrane Used in Landscape Architecture - A Test Method for Evaluating Root Resistance that Use a Simulated Needle and a Rhizome -

조경 녹화용 방수.방근층의 방근 성능평가 시험방법에 관한 연구 - 모의 바늘과 지하경을 이용한 방근 성능평가 시험방법 -

As landscaping building roofs and concrete structures increase gradually for low carbon green growth policy of government, But waterproofing membranes of those structures are effecting by root penetration of landscape plant. 80, we progressed study about test method for fast evaluating root resistance of waterproofing materials jointly with Tokyo Institute of Technology. The result of the study is as follows: (1) The penetrating load of the needle at the displacement speed of 1mm/min was measured for various membrane to basis and lap joints of membrane, the load force was $3{\sim}50$ N by material variously. (2) According to the test method of deriving rhizomes of bamboo grass to basis and lap joints of membrane, there were no penetrated membrane until present, but need persistent observation. (3) Test method of deriving rhizomes of bamboo grass to basis and lap joints of membrane can shorten from period of 2 years to 1 year for testing. Because rhizomes of bamboo grass can grow from May to September, test is possible in same period.