Brochure - TransTech Systems Inc.

Notched WedgeJoint MakerLong-term monitoring of asphaltroad structures has proven thatthe failure of the longitudinal jointis the primary cause of asphaltmat failure in road construction.And the number one reason forthis failure is poor density of thejoint during construction.TransTech’s Notched Wedge JointMaker (NWJM) is designed to preventlongitudinal joint failure byshaping the edge of the mat. Itprovides two vertical edgesfor confinement plus anadjustable tapered wedgefor superior interlockand higher densitiesfollowingjoint compaction.Following many yearsin the field working formany different jurisdictions,the NWJM has consistentlymet or exceededjoint performance specifications,while increasing pavement life anddecreasing maintenance costs. Depending on the mix and ambientconditions, the NWJM typically provides joint densities approximatingthe density of the adjacent mat. As anadded bonus, the wedge shapededge of the mat provides anexcellent safety ramp downto the underlying mat fortraffic during constructionperiods. The NWJM fitsmost mainline paver screeds.It is easy to install and easyto adjust to meet jobsitespecifications. For copiesof test results, please contactTransTech.Comparison of Notched Wedge Joint and Mat DensitiesLOCATION,,JOINT CORES MAT CORES, 1 TO RIGHT MAT CORES, 1 TO LEFTlb/cu-ft % of Max lb/cu-ft % of Max lb/cu-ft % of Max81.00 148.2 94.6 152.5 97.3 148.4 94.789.0097.00Average153.0144.397.692.194.8143.3152.191.497.195.3152.8147.297.593.995.4Maximum Theoretical Density = 156.7 lb/cu-ftJoints Constructed with Wedge Joint Maker, TransTech Systems, Inc.Contractor: James D. Morrissey, Inc., Philadelphia, PennsylvaniaProject: Street Road, Rte 132, Bensalem TownshipAsphalt Mix: 25 mm Superpave Binder Mix, 2.5” thick mat

LongitudinalJoint SystemsThin Lift (NWJM)In recent years, due to increased fuel costs and increasedasphalt pricing, lift thicknesses have been reduced. Mostmaintenance overlays are between 1-3/4” and 2” thick.With this reduced mat thickness, the 12” ramp length hasbecome too slight in angle to be affective. ThereforeTransTech has introduced a new model notch wedge jointmaker called the “Thin Lift”. The device is basically thesame as the original standard model except the ramp widthis only 5” wide; resulting in slightly steeper angled slopes,and only uses 3 bolts to mount.Tests have shown that the joint region density is closer tothe mat density and sectioning of joint cores have showninterlocking of aggregate such that the joint line can notbe seen.For as long as there have been paved roads, there havebeen questions about the longitudinal joint between lanes.How do you make the joint last longer? How do youprevent raveling, cracking, and erosion? How do youprevent water infiltration? What are the critical factors?Now we know and we have the answer, TransTechSystem’s Notch Wedge Joint Maker and Joint Maker ThinLift. Easy to install, easy to adjust, and the best part, itdoes the job as you pave with no additional material or labor.COUNTRY/STATEVertical Joint Density ComparisonPAVING PAVEMENT AVERAGE DENSITYCONTRACTOR TYPE MAT JOINT DIFFERENCEMaine Lane Construction Highway 92.0% 93.8% +1.8%IndianaMilestone Contractors Highway 94.1% 94.1% +0.0% (Warranty, SuperPave)Manitoba, CAN. Nelson River Construction Highway 94.8% 94.1% -0.7%Pennsylvania Quaker Sales Corp. Airport 97.4% 96.6% -0.8% (Military Project)Pennsylvania,McMinn’ s Asphalt Highway 94.0% 93.0% -1.0%FloridaBetter Roads, Inc. Airport 98.1% 96.9% -1.2% (P-401 Mix)IndianaIndianaPuerto RicoNew YorkMilestone ContractorsMilestone ContractorsBetter Roads, Inc.Janik Paving & ConstructionAirportAirportAirportAirport97.6%97.4%100.0%99.2%96.4%95.8%98.3%97.3%-1.2% (P-401.75 Mix)-1.6% (P-401 Mix)-1.7% (P-401 Mix)-1.9% (P-401 Mix)Louisiana TL. James and Company Airport 99.3% 97.0% -2.3% (P-401 Mix)See Following Page

Longitudinal Joint SystemsVertical Joint MakerTransTech’s Vertical Joint Makerattaches to the paver screed atthe edge of the mat to provideprecompaction of the HMAmix before the screed. Thissimple yet effective devicehelps to develop some confinementprior to the shapingof the joint edge by the screed.This additional compaction boosterhas proven to provide higher densitiesat the joint, provide a more vertical edge and betteraggregate interlock when closing the joint. It also servesto dramatically reduce segregation.Don’t Believe Us?Here’s what the industry has to say about TransTech’sLongitudinal Joint Systems:“Our customers, the driving public, continue to tell us that smoothroads are their number one concern. Since this approach of jointconstruction reduces the number of transverse joints in pavements,the end result should be smoother roads. And, the density resultson the Street Road project point strongly to improved joint qualityat the same time.”J. Pat Gardiner, Chief, Quality AssuranceEast Division, Bureau of Construction and Materials PennsylvaniaDepartment of Transportation“This new technology for constructing longitudinal joints was sosuccessful on Street Road that we are working with PennDOT touse it on other projects in our district. For a modest investment,the Wedge Joint Maker increases paving productivity, simplifiesour traffic control, greatly improves worksite safety and, mostimportantly, constructs a very high quality longitudinal joint.”Ricke Foster, Vice PresidentJames D. Morrissey, Inc.“We useTransTech’sWedge Joint Makerall the time. It hasimproved our joint densities consistently, while at the same timeimproving our production and the quality of the finished mat.It has also given us smoother, more durable roadways. TheNWJM is easy to install or adjust and we have never had anyproblems with it.”David Maugle, Vice PresidentJD Eckman, Inc.“The Wedge Joint Maker gives us the most consistent notchedtapered mat edge we have ever seen...and the joint densities itdelivers should allow contractors to hit bonuses on projectsbeing let by NYS Department of Transportation.”Bernard Granger, Paving SuperintendentKubricky Construction“With all the intersections, utilities, and roadside obstructionsto deal with, we wanted to do everything we could to simplifythe paving process...TransTech’s Wedge Joint Maker helped byreducing the number of pullbacks we had to make to close thelongitudinal joints.”Joe Hellenbrand, Asphalt SuperintendentJames D. Morrissey, Inc.Simple Solutions to Not-So-Simple ProblemsMADE PROUDLYIN THE U.S.A.MEMBERNAPANATIONAL ASPHALTPAVEMENT ASSOCIATION1594 State Street •Schenectady, NY 12304 •toll-free 1-800-724-6306 •phone 518-370-5558 •fax 518-370-5538 •www.transtechsys.com