Quality assured with asphalt testing equipment | Global Highways

A road's surface is a vital component of a pavement, providing a safe, dust-free vehicle/pavement interface for the passage of vehicles.

Troxler launches new gauges 778 Troxler is launching new gauges, the Pavetracker Plus non-nuclear asphalt gauge and the Troxler 3430 and 3440.Troxler gauges measure the density and moisture in soil and asphalt in real-time providing critical information on the condition of asphalt as it is being compacted. The 3430 and 3440 feature direct readout of wet density, dry density and moisture on the large illuminated LCD screen. The keypad is larger and backlit for use in night time situations and the optional GPS capabilities allow the gauge to report on the exact location of each measurement location on completion of each reading. The lightweight design. Pavetracker Plus features the latest electromagnetic sensing technology and provides the most accurate readings achievable through non-nuclear technology.The test control system is computer based, using sensors on the machine for feedback (load and strain) signals. The beam cradle has been designed to subject an asphalt beam specimen to four-point bending with backlash-free rotation and horizontal translation of all load and reaction points.

2883 Gilson's new SG-4 Asphalt Bulk Specific Gravity device is a quick and accurate method for bulk specific gravity determinations of asphalt cores and gyratory specimens, says the company.

"It uses a precision microprocessor-controlled system (patent pending) to measure water displacement with superior resolution and accuracy. This improved method provides considerably more reliable and repeatable test results than other current methods," says Gilson.

The weight of the dry asphalt specimen is entered with the keypad and the sample is lowered into the measuring chamber. The bulk specific gravity is read directly from the keypad in minutes, saving time and eliminating potential inconsistencies created by subjective drying and other, less precise methods.

"The unit uses no consumable products, allows the user to perform more than twice as many tests in the same time and greatly improves repeatability between operators," claims Gilson.

The SG-4 is self-contained and includes the measuring chamber and the 4" (5.8cm) and 6" (7.6cm) sample loaders required to perform the test. An SGA-49 label printer can be ordered separately to allow immediate documentation of specific gravity test results.