Which method should be used to cover hot mix asphalt as it is transported?

Using tarpaulins to cover hot mix asphalt during transportation is an effective method for several reasons. Tarpaulins are designed to be durable, waterproof, and resistant to wear and tear. This quality helps protect the hot mix asphalt from external elements such as rain, wind, and debris, which can impact the quality of the asphalt. Additionally, tarpaulins can help maintain the necessary temperature of the asphalt during transit, ensuring it remains workable upon arrival at the job site. Their flexibility allows them to be easily secured over the load, preventing displacement during transport.

In contrast, insulation blankets may not provide the same level of protection from environmental factors and might not be as easily handled during the loading and securing processes. Plastic sheeting, while it could offer some moisture protection, can be prone to tearing and may not retain heat effectively. Wooden planks, though sturdy and useful in a different context, do not provide a covering that protects against weather conditions during transportation. Therefore, tarpaulins stand out as the most effective choice for covering hot mix asphalt due to their combination of protection and practical usability.