Asphalt Temperature Measurement in Road Laying using the PyroCouple infrared temperature sensor The PyroCouple Series of infrared temperature sensors is ideal for measuring the temperature of the road surface before and after tarmac is laid. Tarmac must be compacted while it is still hot to ensure a minimum of air voids for maximum density and strength. If tarmac is too cold when it is laid, then it cannot be fully compacted, resulting in a

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