AS475 Grout

AS475 axle sensor grout is a high quality, durable resin-based grout. It is specifically designed to embed permanent axle sensors and their cables into asphalt or concrete pavements.

It has been used for over 10 years for axle sensor installations and is recognized as one of the best grouts available. AS475 Grout is recommended for use by Thermocoax, Inc. and Measurement Specialties, Inc. (MSI), suppliers of Piezoelectric Sensors, and has been used by Departments of Transportation throughout North America.


  • Capable of withstanding the pressure and impact of thousands of vehicles a day
  • Capable of enduring all types of weather conditions including rain, snow, sleet, extreme heat and cold, and freeze/thaw
  • Rapid curing axle sensor grout, allowing for shorter road closure time Low Curing Temperature
  • Ability to cure at a lower temperature, allowing the AS475 Grout to be used in a variety of diverse climates
Proven and Tested
  • AS475 Grout has been used to install thousands of axle sensors since the 1980's


Available in 7.5 kg, 10 kg, and 18 kg units
7.5 kg package*: Sufficient for one 6 ft (1.83 m) unencapsulated Piezo Sensor
10 kg package*: Sufficient for one 6 ft (1.83 m) encapsulated or one 12 ft (3.5 m) unencapsulated Piezo Sensor
18 kg package*: Sufficient for two 6 ft (1.8 m) unencapsulated Piezo Sensors or one 12 ft (3.5 m) encapsulated Piezo Sensor
The foregoing assumes that IRD installation instructions and road sawcut dimensions are followed. Above Sensor dimensions are approximations.


Cure time:
Under normal conditions, once the BPO powder is added to the mixture: AS475 Grout partially cures in 5-10 minutes; fully cures in 30-40 minutes
Installation Temperature:
Install AS475 Grout in a liquid state in a temperature range of -10°C to +35°C

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