How often should asphalt mixtures be tested for quality?

Testing asphalt mixtures on a regular basis throughout production is essential for ensuring quality control and maintaining the desired performance characteristics of the asphalt. Frequent testing allows for the identification of any deviations from the specified mix design, enabling plant operators to make timely adjustments. This proactive approach helps prevent potential issues that could result in poor pavement performance, early failure, or safety hazards in the finished product. Regular quality testing during the production process assures compliance with specifications and provides confidence in the durability and longevity of asphalt pavements.

In contrast, testing only once a year or only when problems arise would not provide adequate oversight to catch and correct issues in real-time. Additionally, waiting until the end of the project to conduct tests would not allow for adjustments during the construction, making it difficult to ensure that the final product meets the required standards.