AaronHilbert Trak Joint TRAKER User Manual
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User GuideIntroductionThe Trak Joint method uses a durable tool, called the TRAKER®. The TRAKER is straight forward in design andoperation, yet a few tips will assist with proper use.Trak Joint Tape WidthWhen the contraction joint depth is specified as 1/4th of the slab thickness, use this table to select the correctwidth of Trak Joint Tape. See www.trakjoint.com for a short video on preparing the TRAKER for use.Thicknessof SlabTrak JointTape Width4.0” 1.75”5.0” 2.25”6.0” 2.75”7.0” 2.75”8.0” 3.0”For use with 7” and 8” slabs, an adjustment needs to be made to the tool. See below under MaximumContraction Joint Depth for this adjustment.Timing for Trak Joint Tape InstallationFor the TRAKER to successfully embed Trak Joint Tape into fresh concrete, the concrete needs to be highlyworkable. During hot weather, concrete can lose its workability quickly. Experience has shown that it isnecessary to use the TRAKER within one-half hour after placement of concrete. The top surface of freshconcrete may appear highly workable, but at depths below ¾”, the aggregate particles can be firmlyestablished in position. If that occurs, the insertion blade may ride over the coarse aggregate particles asopposed to pushing the particles aside. During cool weather, concrete remains workable for considerablylonger. If the window of installation is missed, then the joints need to be saw cut a few hours later by early-entry saws.Initial Use of TRAKER®Two steps are necessary in preparing the TRAKER for use: 1) the roll of Trak Joint Tape needs to be mountedproperly and 2) the insertion disc needs to be set to the proper depth.• Proper mounting of the roll of Trak Joint Tape is shown on a diagram on the side of the TRAKER. If thetape is mounted incorrectly, then the roll of Trak Joint Tape will jamb as the TRAKER is pushed forward,and the tape will break. If the tape breaks, pull it out of the concrete and start over after mounting thetape roll properly.• The insertion disc embeds the Trak Joint Tape to the proper contraction joint depth. There is a diagramon the side of the TRAKER (next to a wingnut which will loosen the axle to the insertion disc), thatshows the depth setting for the width of Trak Joint Tape being used. It is recommended that the top ofthe tape be level with, or slightly below, the surface of the concrete slab. Upon initial use of theTRAKER, if the tape sits slightly above the surface of the concrete, then a small adjustment needs to bemade to lower the insertion disc so that the Trak Joint Tape is embedded just below the surface. Itworks best not to have the tape embedded more than ¼” below the surface of the concrete becausethe joint-crack, which forms above the tape, can be jagged and contain small “islands”. |
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