APPLICATION OF SUPER BOARD DRAIN (SBD) TO REPLACE THE SAND MAT IN SOFT SOIL TREATMENT BY USING PREFABRICATED VERTICAL DRAIN (PVD) WITH PRELOADING METHOD

The report will introduce a new technology using Prefabricated Horizontal Drain (called Super Board Drain -SBD) which is replaced for Sand Mat in soft soil treatment by using Prefabricated Vertical Drain (PVD) with preloading method and sand filled layer (Sand Mat) designed as the horizontal drainage for PVD through East-West Highway Construction Project.