Development and Performance Testing of Degradable Prefabricated Vertical Drain Core
ZHANG Zhen
HUO Junhao
YE Guanbao
HONG Yang
ZHU Yunqing
Abstract：Based on the engineering performance requirements of prefabricated vertical drains(PVDs),the base material for preparing degradable prefabricated vertical drain(DPVD)core that can replace PVD core and its related properties were studied through the blending of polylactic acid(PLA)and polybutylene adipate-co-terephthalate(PBAT).The results indicate that the PLA/PBAT composite with 30%PBAT content is the optimal base material for manufacturing DPVD core.The DPVD developed exhibits a tensile strength of 2.82 kN/dm,a compressive yield strength of 3.35 MPa,and a longitudinal flow capacity of 84.0 cm³/s under a confining pressure of 350 kPa.
Keywords：degradable prefabricated vertical drainpolylactic acidpolybutylene adipate-co-terephthalatepreloading method
Publication Date：2025-11-30
Online Publishing Date：2025-12-09(First online date of this platform, not the publication date of the document)
Pages：8( 1155-1162 )