Recognizing the need for an improved method of measuring the density of thin layer asphalt overlays, Troxler developed the first true thin layer density gauge, the 4640-B Surface Thin Layer Density Gauge.
Designed to measure the density of thin asphalt and concrete layers from 2.5 to 10 cm (1 - 4 inches), the Troxler Model 4640-B Thin Layer Density Gauge accurately measures the overlay density without influence from underlying material. No nomographs or manual corrections are required in order to compute the true density of the overlay. With onsite results available in as little as one minute, the Model 4640-B can provide the user with test results when they are needed, not hours after compaction has been completed.
The Troxler Model 4640-B Thin Layer Density Gauge complies with ASTM D2950 and AASHTO T 355.
The RoadReader 3450 Thin Layer & Full Depth Density Gauge is the most versatile moisture density gauge ever produced. It combines the measurement modes proven in thousands of Troxler 3400 series gauges with a patented method for true thin layer asphalt and concrete bridge deck overlay density measurement.
By combining thin layer and full depth measuring capabilities in one instrument, the RoadReader 3450 is our flagship gauge in the 3400 series. With its versatility, speed, and economy, the RoadReader Plus is designed to satisfy your compaction control needs at every stage of your project.
Easy Operation and Quick Measurements
The RoadReader is simple to use. An expanded keypad and easy-to-follow prompts provide access to all major gauge functions. It also provides both density and moisture measurements without time-consuming calculations, including wet density, dry density, moisture, percent moisture, percent compaction, percent voids, and percent air voids.
Like all 3400 series gauges, the Model 3450 meets ASTM Standard Test Methods D6938, D2950, C1040, and also AASHTO T 310 and T 355.
The PaveTrackerTM Model 2701-B Plus is an electromagnetic density indication device for asphalt quality control measurements. This gauge contains no radioactive material, so no licensing or special training is required to own or operate this equipment. Your entire asphalt paving team could be ready to perform asphalt quality control measurements at a moment’s notice.
The PaveTrackerTM Model 2701-B Plus weighs only 11 lbs (5 kg), and it displays measurement results in only two seconds. This allows the user to measure larger areas in a shorter amount of time. If problem areas are found, further compaction effort can quickly be made to increase the density of the asphalt.
The PaveTrackerTM Model 2701-B Plus complies with ASTM standard D7113 and AASHTO T 343.
The Premium WheelTracker
The WheelTracker is manufactured out of about 93 percent stainless steel and it is used to test the wearability and water damage potential of asphalt mixes.
By simulating roadway conditions in a controlled environment and using a Linear Value Displacement Transducer to measure deformation of a sample over 11 equally spaced points at 158 lbs. of pressure (adjustable).
The Balluff Linear Variable Differential Transformer (LVDT) transducer supplies robust and accurate rut depth measurements. It works with the index plate to generate root-mean-square error (RMSE) values significantly below AASHTO standards for rut depth measurements.
The Index Plate provides laser accuracy for location of rut depth measurements and works with the Balluff LVDT transducer to generate RMSE values significantly below AASHTO standards for rut depth Measurement
The WheelTracker has a variable-speed motor and slider-crank mechanism that generates RMSE values significantly below AASHTO standards for sinusoidal motion, and lasts longer than a Scotch yoke mechanism.
Temperature control allows you to test at a variety of temperatures, from 77oF to 158oF (25oC to 70oC).
TroxLiftTM provides a compact lifting method and is easy to use. TroxSafeTM stops the machine quickly to prevent injury, and rapidly resets to allow testing to continue.
The Model 5850v2 is Troxler’s newest Superpave™ Gyratory Compactor and the most advanced, easiest to use gyratory compactor on the market today. Completely redesigned with improved electronics, a hydraulic motor, and software-adjustable angle of gyration, the durable 5850 will consistently stand up to the rigors of any asphalt lab. A built-in specimen extruder eliminates the need to lift heavy loaded molds. Samples are prepared, extruded, and cooled on the gyratory compactor.
The Superpave™ Gyratory compactor has a 4.5-square foot footprint is 38% smaller than that of its leading competitor. This, and its durable caster wheels make it a versatile and unobtrusive asset to any work space. The rugged, unique design provides a significant return on your investment. Its low maintenance hydraulic power unit greatly simplifies its maintenance (when compared with that required by electromechanically driven compactors).
The lighter weight, smaller, portable, robust electronics, and quiet operation of the Model 5850 add to the list of the improved features that the operator will enjoy when using Troxler’s newest gyratory compactor. As the paving industry evolves, count on Troxler to keep you up-to-date.
The Automatic Drying Unit (ADU) provides a rapid drying method for compacted asphalt road cores that come from the jobsite wet and must be quickly analyzed for density. This equipment is ideal for same-day analysis of road cores to acquire data for correlation purposes, or to know if the asphalt placed that day meets specifications.
The ADU takes the place of drying the core samples in front of a fan or in a low temperature drying oven for several hours. The typical drying time is between 10 and 20 minutes, saving you hours of waiting. The core density can easily be determined within 30 minutes of arriving in the laboratory. The ADU can also dry loose aggregate or asphalt by using the bag provided with the unit.
Pushing the start button activates the vacuum pump, which draws the air out of the sample chamber. After the air is evacuated, the water is then drawn out of the sample. The attached heating mechanism keeps the sample close to room temperature.
User Friendly Interface and Simple One-Button Operation
The ADU is user friendly with a large, easy-to-read display and an audible alert that indicates when sample drying is finished. The menu driven operation provides clear, concise instructions from device setup to sample drying. To operate the ADU, just place the sample into the chamber, press the button, and wait for the beep.
The ADU Model 5151 complies with ASTM standard D7227 and AASHTO R79.
Troxler now offers advanced infrared (IR) technology to measure asphalt content by the NCAT ignition method. The HMA sample is ignited using IR elements. This produces a very clean and efficient burning of the asphalt while limiting aggregate degradation.
The New Technology Oven (NTO) combines this sophisticated oven with an integrated weighing system to continuously measure the bituminous weight loss during combustion and to automatically display the percent of asphalt in the mix. The remaining aggregate can be sieved for gradation analysis.
The NCAT NTO has the ability to control the burn sequence during every minute of a burn cycle. By testing a broad cross section of asphalt mixes, Troxler has developed a series of burn profiles which allow the operator to fine tune each burn based on aggregate types of mixtures.
The NCAT NTO Models 4731 fully meet and comply with ASTM D6307 and AASHTO T-308 standards and are accepted by state DOTs.
Troxler's Model 3241-D Asphalt Content Gauge enables you to quickly, accurately, and safely test your bituminous mixes for asphalt content using nuclear methods. Used by transportation agencies all around the world, the Model 3241-D provides accurate asphalt content results in as little as five minutes.
No Toxic Chemicals or High Temperature Burns
The Microlab provides the asphalt content measurement without the hazard and expense of the toxic chemicals employed in the solvent extraction method. This method is also beneficial when analyzing the material that may be lost in a high temperature burn oven.
Simplifies Reporting and Reduces Calibration Time
The Microlab downloads test data directly to a printer or computer, simplifying result reporting. Calibration transfer from a centrally located 3241 gauge greatly reduces calibration time for field sites.
The 3241-D gauge meets or exceeds ASTM Standard Test Method D-4125. Troxler's asphalt content measurement equipment is used as the standard test method by more than 25 states and federal transportation agencies. Hundreds of highway construction contractors and testing authorities use the 3241-D for quality control and acceptance testing.
Troxler's Model 3242 Microlab Asphalt Content System provides a quick, accurate, and safe method of measuring the asphalt content of your bituminous mixes in your lab.
In most countries you can possess the Model 3242 without the expense of obtaining a Radioactive Materials License. In states governed by the US Nuclear Regulatory Commission, the savings in licensing fees can pay for the Microlab after just a few months of lab operation. In states or countries with their own license requirements, your savings may be even higher.
There is no better way to complement the quality of the Troxler Superpave™ compactor than by using the best quality laboratory heating oven. Ovens from Despatch Industries will meet or exceed your expectations for a busy asphalt design and testing lab.
Since 1902, Despatch Industries has produced heat process equipment for a variety of industries, including ovens for asphalt testing. The LBB series from Despatch is designed specifically for Superpave™ mixtures and is now available through Troxler.
The feature rich AdventurerTM Pro is built with a large stainless steel weighing platform, mechanical and software overload/underload protection, an integrated security bracket, weigh below hook, and has a standard protective in use cover.
The OHAUS Defender™ 3000 Series economy line of bench scales is ideal for general weighing and simple counting applications in production, packaging, warehouse, inventory, shipping and receiving areas.
Utility and economy come together in the ES Series of all purpose bench scales. The low profile design of the ES series makes them perfect for shipping, receiving, and general bench applications. Easy two-button operation and a large display help guarantee accurate and unmistakable results. The unique three way mounting bracket allows you to mount the indicator to the scale base, above the scale platform, or on any vertical surface. For simple weighing at a favorable cost, the ES Series is the scale to choose.
The all new Explorer EX Precision Scale is the culmination of the very best thinking from the minds of OHAUS. It has been created to deliver quality and dependability that simply has no equal.
The Explorer Pro series features a simple and innovative user interface with on-screen text prompts and scroll down menus. One-step operation guides you through Explorer Pro’s application modes with a single button press. The high resolution display is easy to view and displays only the information you want to see.
Complete with durable T31P Indicator, the VN Series Floor Scales display in lb or kg and include counting mode, geographical gravity correction for quick adjustment to local conditions, and bi-directional interface for printing or connection to a PC. The scales are NTEP certified and MC approved.
Upgrade your Model 3411 or 3401 Troxler nuclear gauge with the Advanced Control Unit. The ACU will transform an older gauge into a more modern gauge, very similar to the current Model 3430. Special functions are available at the press of a button. Offsets are applied with a simple series of keypresses - no more knobs and switches. Upgrade your Troxler gauge today with this authentic Troxler Advanced Control Unit to be sure to get only the best and most reliable parts, service and support.
Troxler gauge case wheels attach to the Troxler nuclear gauge shipping case (ALL 3400 series yellow molded cases) to allow for easy transport. Now you can easily move the gauge from the storage site to the vehicle and on the job site.
Troxler now offers a truck box specifically designed for the safe transportation of nuclear density gauges. This transportation box mounts in the bed of a pickup truck near the tailgate. It is bolted down to prevent the case from falling out in case of an accident and to deter any would-be thieves. The aluminum box blends in with other toolboxes so as not to attract attention to the gauge shipping case while in transport. In addition to these benefits, this box tilts upright to allow the gauge user easy access to the gauge at the job site. No more climbing into the truck and bending to lift the gauge out of the case!
The Radiation Alert Monitor200 Survey Meter serves as an inexpensive way to fulfill survey requirements for an ALARA (As Low As Reasonably Achievable) program. Radiation Alert Monitor200 provides the basic tool to survey both storage areas and work sites to ensure your employees have a safe working environment.
Monitor200 detects alpha, beta, gamma, and X-ray radiation with a calibration based on the gamma emissions from a Cesium-137 source, traceable to NIST. Neutron sources can also be located with the Monitor 200 by detecting the photon radiation given off from these sources. The Monitor200 meets guidelines established by the US Nuclear Regulatory Commission.
All survey meters should be calibrated at least annually.
The TroxAlertTM Radiation Survey Meter serves as an inexpensive way to fulfill survey requirements for an ALARA (As Low As Reasonably Achievable) program. TroxAlertTM provides the basic tool to survey both storage areas and work sites to ensure your employees have a safe working environment.
TroxAlertTM detects alpha, beta, gamma, and X-ray radiation with a calibration based on the gamma emissions from a Cesium-137 source, traceable to NIST. Neutron sources can also be located with the TroxAlertTM by detecting the photon radiation given off from these sources. The TroxAlertTM meets guidelines established by the US Nuclear Regulatory Commission.
Troxler’s FREE app will make data transfer from your field devices easier than ever before.
Collect your stored data wirelessly on your smart device with Bluetooth capabilities.
This is a first for the industry!
To purchase the Bluetooth adapter for your gauge, click here.
Download App Here
GyroPave™ is the software companion to Troxler's Model 4140 and 4141 Gyratory Compactors. GyroPave provides a flexible and powerful tool to collect and process densification data from the gyratory compactor.
If you would like to purchase Troxler's GyroPave™ software, please follow these steps:
1. Download the software at http://www.troxlerlabs.com/downloads/software/GyroPave.zip .
2. Once you have downloaded the .zip file, extract the Setup file.
3. Run the Setup file on the computer where you wish to install the software and follow the default prompts.
4. The first time you run the program, you will be prompted to activate your Troxler Software Product. Follow the prompt for activation.
5. On the next screen, you will be presented with two User Codes (User Code 1 and User Code 2).
6. Email these codes to Troxler at email@example.com .
You will receive your activation codes to enable your software in a timely manner.
The Troxler nuclear moisture density gauges are used by many contractors, engineers, and highway departments for compaction control of soil aggregate, concrete, and full depth asphalt. The gauges meet or exceed the ASTM standards D6938, D2950, and C1040. The operator selects the density measurement mode, backscatter, or direct transmission based on the material type and the thickness of the layer being measured.
These updated gauges offer new standard features and many optional new features. The owner can customize the gauge to meet their testing needs.
The Model 3430 is the simplest and most economical gauge offered by Troxler. This gauge offers many features, including:
Optional features for the Model 3430 include:
The Model 3440 is for users who want user-friendly features. Along with the standard features provided in the Model 3430, the Model 3440 provides additional features including:
Optional features offered for the Model 3440 include:
Both models offer:
For information on the legacy 3430 and 3440 Gauges, refer to the Documents TAB.
* This product is currently available for the US market only.
Troxler now offers a license-exempt option for soil quality control testing. The EGauge uses the proven nuclear technology for density measurements unlike other non-licensed density measurement devices. It provides accurate and reliable readings and it is easy to use. The EGauge Model 4590 complies with ASTM D8167.
Exempt from Licensing
Maintaining a radioactive materials license can be complicated and time consuming for owners of Specific Licensed gauges. In the United States, the EGauge is exempt from the radioactive materials license - no special training classes for operators, no TLD badges, no special shipping documents, and no reciprocity needed for use in other states.
Easy to Use
The operation of the Model 4590 is similar to that of the traditional Troxler nuclear density gauges so the experienced operator can use the gauge with little additional training.
Reliable and Repeatable Density Results
Data collected by multiple agencies shows excellent correlation between the EGauge and Troxler’s Model 3440 Density Gauge (R2 values ranged from 0.93 to 0.98). EGauge repeatability is also equal to that of the current density gauges as listed in the applicable ASTM specification (0. 3 lb/ft3 (4.8 kg/m3)).
Complete with Moisture Probe
The Troxler Model 6760 Moisture Probe is provided with each EGauge. The electromagnetic probe measures the moisture of the soil in the same prepared hole that is used for the density measurement. Bluetooth technology enables the probe to communicate the moisture data to the EGauge allowing the gauge to display complete results. The EGauge also accepts moisture data using the keypad if another method is used.
Additional Features and Options
Easy to Read Display – easy to read enlarged LCD screen with backlighting for viewing in low light conditions
Automatic Depth Mode – detects the source rod depth during each measurement
Data Storage and Output – stores up to 1000 test readings under multiple projects for later recall or downloading
Auto-Store Function – automatically stores sample data under the active project when enabled
USB Port – access for outputting stored data to a printer or removable USB storage drive
GPS – records GPS information with each measurement and has Wide Area Augmentation System (WAAS) capabilities for better accuracy
Measures Moisture Content as the Aggregate Moves Through the Plant
The MMS Model 3630 uses proven nuclear technology to continuously monitor moisture in your aggregate mix.
The moisture measurement occurs as the mix moves through the plant on the conveyor belt. There is no physical contact with the aggregate mix or belt. The system provides a continuous reading of the moisture content. The moisture content, combined with the knowledge of the mass proportions of the other components in the mix, provides you with a precise and reliable moisture content of the aggregate.
Saves Time and Money
An unknown change in moisture of the raw materials (often due to weather) will have a large impact on the quality and performance of the product made at your asphalt plant. With the MMS, moisture content of the combined aggregate is always known.
Knowing the correct dry weights of aggregate allows for more accurate mixing, resulting in savings by eliminating wasted binder. Additionally, knowing the moisture content of the aggregate mix entering the drum allows optimum temperature control resulting in additional savings from fuel.
Moisture Data can be Sent to Your Controls or Displayed in the Control Room
The MMS sends a standard signal as a current or voltage which can be sent to the control system for display to aid in the control of the plant parameters.
An optional control center is available to display, archive, and print the moisture data for your company's requirements.
The Fastest Burns in the Industry
Complete, Clean Burns—Every Time
Simple to Use
Just follow these five easy steps: (1) heat the asphalt sample, (2) weigh the sample and divide it across two sample baskets, (3) enter the sample mass, (4) place the baskets in the chamber, and (5) close the door and press a button to begin the test.
Extremely fast warm-up (only twenty minutes) and recovery times ensure quick, complete burns. The typical burn time for a 1200 gram sample is twenty minutes or less (at 240 VAC).
An integrated weighing system continuously measures the bituminous loss during combustion, and the oven displays the percent of asphalt in the mix when the burn is complete. You can then sieve the remaining aggregate for gradation analysis.
ASTM and AASHTO Compliant
The oven uses the NCAT ignition method and fully meets and complies with ASTM D6307 and AASHTO T 308.
Maintenance is simple and straightforward. Removable panels allow easy access to all components and assemblies.
The Troxler I-FIT (Illinois - Flexibility Index Tester) machine is completely contained on a rolling portable test frame that is approximately 31.5" L x 20" D x 34" H. The fixture is designed to apply load to a Semi-Circular Beam (SCB) specimen through a pivoting head and roller bearing pins. The system is designed to meet the most current standard for TP105 Illinois.
Servo Hydraulic Actuator
The system includes a 4500lbf actuator with low friction seals. It utilizes closed loop feedback from the load cell and magneto restrictive position sensors for stroke and load line displacement (LLD).
Load Line Displacement Measurement
The LLD position sensor utilizes a non-contacting method to measures displacement of SCB specimen at the loading head.
Controls and Software
It includes a custom program for I-FIT test operation. Every test has a text data file created for easy to use post processing as well as printouts from the test during operation. In addition, a Multi-Test Language (MTL) compiler is provided to allow the user to create custom programs or modify custom programs and store as a callable application.
The Troxler Disk-shaped Compact Tension and Texas Overlay Test Machine (DCT - OT) offers the following features.
The IDEAL Plus offers precise rate control for testing.
Load Line Displacement (LLD) Measurement
Customized for quick and accurate sample cutting!
The Testquip Tile Saw is customized with a 16" blade for 6" cuts. Once the specimen is inserted, simply slide the table left or right in the preconfigured thickness offsets (50mm and 62 mm default).
The Testquip Brick Saw features a 0.050" thick 10" blade to meet test standard notch cut thickness requirements. A custom spring clamp fixture is mounted to the back of the table for quick and secure sample loading. It includes spacer block to allow cutting SCB (15mm default) and DCT specimen notch cuts without adjusting the blade.
License Exempt, Troxler Accurate
From the inventor of the nuclear density gauge comes the ONLY combination nuclear gauge that is License Exempt!
Less hassle and saves money.
Eliminates: RML, Reciprocity, TLD Badges, Storage Requirements, Transportation Documents, Double Locks, Leak Tests, Record Keeping, Emergency Procedures, Expensive Shipping, Radiation Safety Training, and Military Base Restrictions
Going with license Exempt equipment also eliminates the risk of a surprise inspection by the state regulatory agency or NRC.
Combination Design - Backscatter and Direct Transmittion
Asphalt using backscatter, compliant with ASTM D2950 and AASTHO T 355.
ASTM D2950: Standard Test Method for Density of Bituminous Concrete in Place by Nuclear Methods
AASHTO T 355: In-Place Density of Asphalt Mixtures by Nuclear Methods
Soil using direct transmission and backscatter, compliant with ASTM D8167.
ASTM D8167: Standard Test Method for In-Place Bulk Density of Soil and Soil-Aggregate by a Low-Activity Nuclear Method (Shallow Depth)
Lab tested to hold similar accuracy as licensed nuclear gauges
Extremely accurate and more reliable than non-nuclear devices
Saves time due to not needing an offset/correlation
License Exempt nuclear density gauge, only available through Troxler.
Backscatter (~top 3.5” measured)
2-12” Direct Transmission
BS: 30sec, 1min, 2min, 3min, 4min
DT: 1min, 2min, 3min, 4min
ASTM D2950 and D8167
Bluetooth connected capacitance probe
EGauge Size (H x L x W)
24.6” x 15.4” x 9.2”
625mm x 391mm x 234mm
Moisture Probe Size (H x L x W)
8.2” x 13.6” x 5.6”
208mm x 346mm x 142mm
31.3” x 20.4” x 15.5”
795mm x 518mm x 393mm
33 lbs (14.97 kg)
83 lbs (38 kg)
Backlit 4x20 LCD
Main Power Source
NiMH rechargeable batteries
Backup Power Source
5 AA alkaline batteries
12 V DC, 2A
Features: Auto Depth, LED Charger Indicator, GPS, Bluetooth, Remote Keypad, USB Port, Data Storage - 1,000 readings, Serial Port, and External Beeper.
Case Features: Extendable Handle and Wheels
Matches core and is industry standard
30 seconds - 2 minutes
Destructive and tested off sight
The NCAT Three Wheel Polisher by Troxler is a device that will polish a sample to be used in friction testing. Quickly and reliably reach your sample’s terminal friction value by polishing it with the TWP. Complete with weights, a pump, and a water basin this polisher will help you verify your aggregates or mix design to help improve road safety.
Reach out to your local Troxler sales representative today for more information