MIT Product Demonstration ACPA 55 th Annual Meeting CPU 4 Presented by Garry Aicken, P.E. North American Distributor for MIT Demonstrate the New Rail Less Dowel Bar Scanner - MIT-DOWEL-SCAN Demonstrate Pavement Thickness Gauge - MIT-SCAN-T3 1
MIT DowelSCAN Faster The MIT-DOWEL-SCAN system provides nondestructive testing of dowel bars in plain concrete pavements as soon as you can walk on the concrete. Faster Set-Up in the Field No rails to assemble or move Truly a single person operation pick up the laser & push the device to the next joint Faster joint relocation & alignment allowing more completed tests per hour 2
MIT DowelSCAN Simpler Configuration Improved design eliminating system components. Hard wire connection, removable battery. Single Transport Case Integrated Data Collector attaches to the scanner Easier Battery Charging - Data Collector includes scanner battery detaches for charging. Real Time Results: magnetic image map is generated as the joint is scanned. Quantitative results shown immediately after scanning the joint 3
MIT DowelSCAN Accurate The MIT-DOWEL-SCAN system is still very accurate & repeatable Provides depth, translations, deviations, skew and tilt to within tenths of an inch precision. MIT-DOWEL-SCAN has 10 sensors and a laser to guide the unit along the joint with same great accuracy and repeatability Easier transfer to MagnoProof 5 with USB A port on the data collector. Post test data processing is via a 10 sensor/signal version of MagnoProof 5 Meets ASTM E-3013 4
MIT DowelSCAN Laser Alignment Joint alignment is fast: Set the AA battery powered laser on the edge of the pavement Align the scanning unit with the laser using the green lights in front. Red lights appear when not aligned Retract transport wheels 5
MIT DowelSCAN Automatic Alignment Scanning Unit automatically maintains alignment during the test. The operator does not steer the device during the test Allows observation of the real time mapping 6
MIT DowelSCAN Product Improvements Firmware revision to address bright sunlight interfering with alignment Modified encoder configuration to maintain the 1mm gap with the wheel Laser battery case reinforcement Improved transport case foam Increased the thickness of the laser foot Increased thickness of cable support clamps Working on reducing the number of cover screws that shear off during shipment Supply Chain improvements will reduce lead time 7
MIT SCAN-T3 - Thickness Gauge Meets AASHTO Standard Test Method T359-18 Pavement Thickness by Magnetic Pulse Induction eliminates cores for thickness Replaces the popular MIT SCAN-T2 Very accurate less than +/- 3/16 on 13 pavement ASTM Standard in Balloting should be issued Spring of 2019. Includes reflector material specifications 8
MIT SCAN-T3 New Features Added GPS can return to the reflector location quickly Added additional sideways search bar - to assist in locating reflectors quickly Replaced the keypad with a mouse button Can automatically detect reflector size & type One piece design prevents accidental interchanging of head and main body. 9
MIT SCAN-T3 New Software Improved firmware provides alerts including moving too fast & starting to far from the reflector Allows preloading of test location descriptions New software that produces reports and performs statistical analysis of multiple tests. Software allows use of inches to X.X5 or X.X0 10
MIT SCAN-T3 Other Applications Search mode used to locate center of dowel bars for saw cuts Cement Treated Base material thickness measurements Verify tie bars installed. Allows counting of tie bars Lift thickness of base materials 11
MIT SCAN-T3 Wide Acceptance Used on Projects in the Following States: Iowa Wisconsin Minnesota Illinois Tollway Washington North Dakota South Carolina Colorado Florida Alabama West Virginia Pennsylvania Idaho South Dakota Nevada Utah Arizona North Carolina 12
MIT SCAN2-BT Hardware Upgrade Replace Casio IT-600 with IT-800 1. Bigger Screen 2. Brighter Screen 3. Better Keypad 13
MagnoProof 5 Software MagnoProof 5 Software Advantages 1. Easier Data Transfer Function performed within MagnoProof no longer need to work within Windows Mobile Device to move files 2. Improved Data Analysis Tool Improves identification of influenced areas and suggest possible causes 3. Better Presentation of Results Graphics & Report Table are shown in the same window 14
Easier Analysis with a Single Screen Visualization Screen: Signal Chart Intensity Map Modeled vs. Measured Signal Tabular Results Project Information 15
Batch Report Statistical Analysis Vertical Misalignment Results by Bar Average Depth Results by Bar as a X-Section (Shows each bar, plan elevation, & average depth ) Horizontal Misalignment Results by Bar Depth Results by Bar Total Misalignment Results by Bar (Combination of Horizontal & Vertical Misalignments) Side Shift Results by Bar 16
Added USA Services Dowel Bar Scanner Verification Services for older devices including the original SCAN2 to certify that system is still within manufacturer s tolerances In conjunction with MIT capable of adjusting calibration settings to return devices to manufacturer s tolerances. (Corrects drift in older devices) Calibrating MIT SCAN-T2 & T3 devices. Provide on-site comparison of devices to confirm that systems are accurate. Provide on-site Operator Training & Certification program MIT SCAN-T2/T3 reflectors made in the USA with standard commercially available materials 17