Anchor Pocket Seal Information
The following procedure is recommended for installation of the Anchor Pocket Seal into the standard stressing anchor pocket for a ½” unbonded monostrand post-tensioned system. However, the contractor should follow all requirements and recommendations of the applicable project specifications.
- Although the Anchor Pocket Seal is designed to fit the most common stressing pocket dimensions that have been used throughout the post-tensioned industry, the end user shall be solely responsible for determining the suitability for use of the Anchor Pocket Seal in all installations.
- All of the existing cementitious grout within the anchor pocket should be carefully removed without damaging the anchor pocket within the slab. It may be necessary to use a rotary tool with an abrasive grinding stone to clean the surface of the concrete anchor pocket and to remove any grout that remains bonded to the concrete pocket surface.
- The stub of post-tensioned cable protruding from the anchor should be trimmed to a maximum length depending on whether the anchor is encapsulated, or not. For encapsulated anchors, the cable should be trimmed to a length of less than 2” as measured from the face of the anchor/wedges. For non-encapsulated anchors, the cable should be trimmed to a length of less than 1.5” as measured from the face of the anchor/wedges.
- At the discretion of the project specifier, a bead of sealant (caulk or epoxy) may be applied to the surface of the Anchor Pocket Seal outer band where it engages with the concrete surface of the anchor pocket. However, if the existing surface of anchor pocket is clean and intact, the Anchor Pocket Seal is designed to provide a tight fit and additional sealant should not be necessary. It is important to note that the Anchor Pocket Seal is intended to be a moisture barrier for existing post-tensioned tendons, and it is supplemental to the cementitious grout used to fill the anchor pocket. The Anchor Pocket Seal is not represented to provide a watertight seal, or as an encapsulated anchor alternative.
- Once all further preparation and treatment of the anchor, cable end, and pocket has been completed per the project specifications, the Anchor Pocket Seal may be inserted into the anchor pocket and pushed in until it is firmly seated.
