How are asphalt temperatures checked during paving?

Utilizing infrared thermometers for checking asphalt temperatures during paving is the most effective and accurate method. This technology allows for non-contact measurements, providing quick results that reflect the temperature of the asphalt without disturbing the material. Infrared thermometers detect the infrared radiation emitted from the asphalt surface; this is crucial during paving, as maintaining the correct temperature is vital to ensure proper compaction and adhesion of the asphalt layers.

While traditional thermometers can measure temperature, they require direct contact with the material and may not provide immediate readings or account for variations across the pavement. Checking for surface color changes offers a very rough estimate but lacks precision, as color alone can be affected by various factors not related to temperature. Temperature sensors embedded in the asphalt can provide real-time data but are not common practice during the paving process itself, as they require prior installation and may not offer instant feedback necessary during active operations.

Thus, infrared thermometers are preferred as they balance efficiency and accuracy, making them the go-to choice for monitoring asphalt temperatures during paving activities.