Bituminous materials may only be sampled in a liquid (hot) state.

• A. True
• B. False
• C. Only at room temperature
• D. Only after cooling

Answer: (B)

Sampling bituminous materials is about getting a representative portion, not about always grabbing it while it’s hot. While you often collect a hot, liquid sample to reflect what’s being produced, you can also take a cold sample after it has cooled for storage or testing that doesn’t require heat. Some tests do require conditioning the sample to a specific temperature, but that doesn’t mean the material must be sampled only in the hot state. So the statement is not correct.