TransTech Systems The World s Number 1 Supplier Of Non Nuclear Density Meters for Asphalt Pavements and Engineered Soils Distributed in the UK and Ireland by JR Technical Services UK Ltd J R T S 1-800-724-6306 www.transtechsys.com
TransTech Systems Asphalt Units 3000 + Units in use worldwide 400 + In Europe 95 +Sold in the UK and Ireland First Unit sold in the UK in 1998
TransTech s Pavement Quality Indicator (PQI)
PQI Theory of Operation Electrical Impedance Technology for Asphalt Density Measurement...a brief introduction
TransTech Non Nuclear Gauge Specification WARRANTY Standard 12 month Optional Extended Warranty Customer CarePlan includes all adjustments, upgrades, battery replacement, complete annual preventive maintenance and return shipping. OPTIONAL ACCESSORIES: Test Block Dimensions 12 in. x 12 in. x 1.5 in. 30 cm x 30 cm x 4 cm Weight Approx. 25 lb. 11 kg Availability: First Unit due in the UK Shortly
Some Basic Concepts Dielectric Constant: The ability of a material to store electrostatic energy per unit volume Impedance: The resistance to AC electricity flow (varies with frequency) DC formula: V=IR (R=Resistance) AC formula: V=IZ (Z=Impedance)
Measurement Basics (cont.) The overall dielectric constant of a material is a function of the volume of each component times its individual dielectric constant
In Not-so-simple Terms In actuality, a complex dielectric mixing model applies relating dielectric constant to volume fraction and dielectric constant of each component ε ( α ( ) α ( ) α ) 1/ θ ε 1 η ε η θ ε α w + s + a c =
In Summary Higher density, compacted asphalt contains less air Less air results in a higher overall dielectric constant We can measure this, since it results in more resistance to the flow of alternating electrical current
TransTech Systems
TransTech Systems PQI 301 is now widely accepted in UK BS 594987 (2007) Asphalt for roads and other paved areas specification for transport, laying and compaction and type testing protocols Annex I (page46) MANUAL OF CONTRACT DOCUMENTS FOR HIGHWAY WORKS VOLUME 2 NOTES FOR GUIDANCE ON THE SPECIFICATION FOR HIGHWAY WORKS (series_ng_0900 -SHW Clause 929 page 30 clause 7 Notes For Guidance) 1-877-250-8347 www.qcqalabs.com
TransTech Systems 301 PQI Operation
Modes of Operation Continuous Reading Mode Provides for real time measuring of density Allows user to quickly scan the asphalt mat Displays current battery voltage and real time moisture and temperature data. Continuous Mode [B] Batt: 12.7V H2O: 3.2 187.6 F D: 156.5 Lb (87.8%)
Modes of Operation (cont.) Single Reading Mode A single density reading is collected within five seconds time. Single Mode [B] Press ENT to Read
Modes of Operation (cont.) Average Reading Mode An operating mode to measure the density of a sample location in which the PQI performs a mathematical average based on the number of readings selected. This mode allows for averaging of readings. Average values can be stored in a data log if desired. Avg Mode (5) [B] ENT) Take Reading # 1
PQI Averaging Techniques for Comparison to Cores Station # 300 + 50 Asphalt Mat 5 1 2 Location to pull 4 in. or 6 in. core 4 3 Take an average of 5 single shot readings to determine the Average Density for the location
Results The PQI is extremely accurate if used properly The results are at least as accurate or better than those obtained by a nuclear meter. This has been confirmed by NCAP in the USA Easy and safe to use
TransTech Systems THE NEW SDG NON NUCLEAR DENSITY METER FOR SOILS A World First from TransTech
TransTech Non Nuclear Gauge What we will offer The New SDG
Standard Development ASTM AASHTO
TransTech Non Nuclear Gauge The New TransTech SDG Will Eliminates unit licensing and certification associated with nuclear materials usage No special operator training/certification or radiation monitoring requirements No special storage or transport problems User friendly, in-process, cost effective tool for any crew member Fast, reliable, rugged, accurate and repeatable readings in real time Provides GPS logging for database management Helps ensure solid foundations for structures such as buildings, bridges, roads and dams
TransTech Non Nuclear Gauge Measurement Mode: Average Averages five (5) readings and stores data including location, date and time. Stores 500 records. Functions: Wet & Dry Density, % Compaction, % Moisture Integrated Temperature Sensing Real time temperature display 0 F to 350 F -17.7 C to 177.6 C Soil Specifications: Designed to operate with standard soils used in civil construction projects. Requires inputs from standard USCS Soil Classification (ASTM D2487) Particle Size Distribution (ASTM D422) Proctor Test (ASTM D698 and D1557) MECHANICAL SPECIFICATIONS: Unit Weight < 12.8 lb. 5.8 kg Unit Dimensions 13 in. x 11 in. x 9 in. 33 cm x 27.9 cm x 22.9 cm Shipping Weight w/ Case 29.4 lb. 13.3 kg Storage Box Dimensions 17.5 in. x 21 in. x 11 in. 44.5 cm x 53.3 cm x 27.9 cm Operating Temperature Ambient 20 F to 110 F (-7 C to 43 C) Sample soil not frozen Storage Temperature 0 F to 150 F (-18 C to +66 C Specification MEASUREMENT SPECIFICATIONS: Sensing Area 11 in. diameter base allows optimum measurement on fine and coarse material types. Measurement Units English or Metric, Keypad controlled inches or mm, lb/cu-ft or kg/cum Measurement Display Wet Density, Dry Density, % of Compaction, % of Moisture and GPS Data Measurement Depth Designed for use on a standard 12 (30cm.) un-compacted layer of soil during or after compaction ELECTRICAL SPECIFICATIONS: CE Mark certified for no electrical interference Microprocessor Controlled 4.0 Amp-hr NiMH Battery Pack (7.5 volts) Recharge Time 4.5 hours Display LCD Graphical Display 3.9 (320 x 240 Pixels) Battery Charger US or European AC Chargers and 12 volt Auto Chargers USB Port OPERATIONAL FEATURES: Menu driven software with keypad functions Diagnostic Mode for operator troubleshooting User Programmable Target Density Computer and printer download capability Built in Date and Time Stamp User Inputs for Soil Characteristics USB Flash Drive Compatible for Data Transfer USB Citizen Weatherproof Label Printer Compatible USB Keyboard Data Entry Integrated GPS for Time and Location Stamp
SDG Development Lab Test Compactions
Full Scale Field Tests Test Pad Approx 3m wide & 12m long
SDG Development Tested on Soil Types 1. Gravel 2. Sand 3. Crushed Stone (Lime Stone) 4. Crushed Gravel 5. Sandy Clays
SDG Development Test 2 Tacoma Washington Test 1 Albany, New York Test 4 Northern Texas Test 3 Northern Georgia Completed Test Sites
TransTech Systems Jon Sides JR Technical Services UK Ltd 17 Bloomsbury Court, Gosforth Newcastle Upon Tyne NE3 4LW Tel 0191 2855977 Mob 07831 800112 Email jon.sides@jrts.co.uk Thank You J R T S 1-800-724-6306 www.transtechsys.com