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Dynamic Asphalt Strain Gages

Pavement Instrumentation

Dynamic Asphalt Strain Gages (ASG/VASG) measure axial strain in flexible pavement under high frequency (dynamic) conditions. These low modulus, ruggedized sensors are built to withstand the high temperature and vibratory rolled compaction required for asphalt placement.

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Description

Utilizing four active elements of a Wheatstone Bridge circuit, this gage is easily adaptable to most data acquisition systems. Each sensor is individually calibrated with high temperature resistant lead wire attached and is provided with QC documentation and calibration data.

The low-profile, field-proven design allows for measurements closer to the bottom surface, placement in shallower pavement lift heights, and easier retrofit installations. High-temp wire with braided shielding protect the lead wire from extreme heat and signal noise.
Pavement gages field