The International Paper Company, the world’s largest paper company, required repair to the existing HDPE pond lining in an effluent water storage basin in Pine Hill, Alabama. This repair work was conducted in four phases from 2011 to 2013. More than 1 mi of interior dike was repaired with the HYDROTEX® Articulating Block fabric formed concrete product.
The repair consisted of installing a fabric formed articulating block revetment concrete mat along the earthen slope on the inboard side of the mill’s Aerated Stabilization Basin dike. The mat was anchored at the top in a minimum 3 ft deep trench and extended approximately 60 ft down the interior slope of the dike. The HYDROTEX Articulating Block lining was placed a 1.75h:1v slope to a depth of near 30 ft in 115-degree water. The majority of the mat along the slope was installed under the water’s surface; the pond was not to be drained for this work. The fabric-formed articulating block concrete mat material was installed directly over the existing HDPE pond liner with a geosynthetic interface consisting of a nonwoven geotextile between the mat and the existing liner to reduce slippage.
The engineer AMEC Environment and Infrastructure chose to use the 6 in thick square pattern (non-staggered) HYDROTEX Articulating Block product. Galvanized aircraft cables with a 3/16 in diameter and breaking strength of 4200 lbf were installed three per block in the slope direction, providing internal reinforcement and inter-block connection.
The contractor, CS Beatty Construction from Birmingham, Alabama, was awarded in 2012 the ABC National Excellence in Construction Pyramid Award and the ABC Excellence in Construction First Place Award for this articulating block liner repair project.