Knitted geotextile

Abstract

A knitted geotextile includes a plurality of first strength yarns arranged in a first layer, each of the plurality of first strength yarns extending in a first direction, a plurality of second strength yarns arranged in a second layer, each of the plurality of second strength yarns extending in a second direction, a plurality of capillary active yarns arranged in at least one of the first layer or the second layer, and a plurality of knitting yarns interconnecting the plurality of first strength yarns, the plurality of second strength yarns, and the plurality of capillary active yarns.

What is claimed is: 
     
         1 . A knitted geotextile comprising:
 a plurality of first strength yarns arranged in a first layer, each of the plurality of first strength yarns extending in a first direction;   a plurality of second strength yarns arranged in a second layer, each of the plurality of second strength yarns extending in a second direction;   a plurality of capillary active yarns arranged in at least one of the first layer or the second layer; and   a plurality of knitting yarns interconnecting the plurality of first strength yarns, the plurality of second strength yarns, and the plurality of capillary active yarns.   
     
     
         2 . The knitted geotextile of  claim 1 , wherein the plurality of knitting yarns is configured in a warp knit pattern. 
     
     
         3 . The knitted geotextile of  claim 1 , wherein the first direction is a machine direction along which the knitted geotextile advances during manufacturing thereof, and wherein the second direction is a cross-direction perpendicular to the machine direction. 
     
     
         4 . The knitted geotextile of  claim 3 , wherein each of the plurality of capillary active yarns extends in the second direction. 
     
     
         5 . The knitted geotextile of  claim 3 , wherein each of the plurality of capillary active yarns extends in the first direction. 
     
     
         6 . The knitted geotextile of  claim 1 , wherein each of the plurality of capillary active yarns is made of nylon. 
     
     
         7 . The knitted geotextile of  claim 1 , wherein each of the plurality of first strength yarns is made of polypropylene. 
     
     
         8 . The knitted geotextile of  claim 7 , wherein each of the plurality of second strength yarns is made of polypropylene. 
     
     
         9 . The knitted geotextile of  claim 1 , wherein the knitted geotextile has a tensile strength of at least 10 kN/m under ASTM D4595. 
     
     
         10 . The knitted geotextile of  claim 1 , wherein each of the plurality of capillary active yarns is arranged in the second layer, and wherein the plurality of capillary active yarns and the plurality of second strength yarns are arranged in an alternating pattern in the second layer. 
     
     
         11 . A knitted geotextile comprising:
 a plurality strength yarns;   a plurality of capillary active yarns configured to transport fluid in at least one of a first direction or a second direction; and   a plurality of knitting yarns interconnecting the plurality of strength yarns and the plurality of capillary active yarns in a warp knit configuration,   wherein the first direction is a machine direction along which the knitted geotextile advances during manufacturing thereof, and wherein the second direction is a cross-direction perpendicular to the machine direction.   
     
     
         12 . The knitted geotextile of  claim 11 , wherein each of the plurality of capillary active yarns extends in the second direction. 
     
     
         13 . The knitted geotextile of  claim 11 , wherein each of the plurality of capillary active yarns extends in the first direction. 
     
     
         14 . The knitted geotextile of  claim 11 , wherein each of the plurality of capillary active yarns is made of nylon. 
     
     
         15 . The knitted geotextile of  claim 11 , wherein each of the plurality of strength yarns is made of polypropylene. 
     
     
         16 . The knitted geotextile of  claim 11 , wherein the knitted geotextile has a tensile strength of at least 10 kN/m under ASTM D4595. 
     
     
         17 . The knitted geotextile of  claim 11 , wherein the plurality of capillary active yarns and the plurality of strength yarns are arranged in an alternating pattern. 
     
     
         18 . A knitted geotextile configured to enhance drainage of fluid between a trafficked surface and a subgrade soil, the knitted geotextile comprising:
 a plurality of capillary active yarns configured to transport fluid in at least one of a first direction or a second direction; and   a plurality of knitting yarns interconnecting the plurality of capillary active yarns in a warp knit configuration.   
     
     
         19 . The knitted geotextile of  claim 18 , wherein the plurality of capillary active yarns is positioned at a vertex of the subgrade soil. 
     
     
         20 . The knitted geotextile of  claim 18 , wherein the first direction is a machine direction along which the knitted geotextile advances during manufacturing thereof, and wherein the second direction is a cross-direction perpendicular to the machine direction.