Experimental Study on Plastic Blind Ditch Used for Subgrade Drainage

Bin Liu1, Gaojie Du2

Zunyi Highway Administration Bureau of Guizhou Province, Zunyi, 563000, China

School of Civil Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: In recent years, the research of plastic blind ditch replacing gravel blind ditch has gradually sprung up. Plastic blind ditch is a new type of composite geotechnical drainage material, which overcomes the shortcomings of traditional gravel blind ditch. At present, a large number of experimental studies have been done on the properties of plastic blind ditch materials, but there is little research on the actual road performance. To solve this problem, this paper tests the drainage effect and bearing capacity of different types and models of plastic blind ditches under different conditions, and analyzes and evaluates their actual road performance.

Keywords: Mountain roads; Drainage facilities; Plastic blind ditch; Drainage test; Compression deformation experiment