Context: The largest use of asphalt/bitumen is for making asphalt concrete for road surfaces and accounts for approximately 85% of the asphalt consumed in the United States. Asphalt concrete pavement mixes are typically composed of 5% asphalt/bitumen cement and 95% aggregates (stone, sand, and gravel). Due to its highly viscous nature, asphalt/bitumen cement must be heated so it can be mixed with the aggregates at the asphalt mixing facility. The temperature required varies depending upon characteristics of the asphalt/bitumen and the aggregates, but warm-mix asphalt technologies allow producers to reduce the temperature required. There are about 4,000 asphalt concrete mixing plants in the U.S., and a similar number in Europe.

Question: What is the biggest use of asphalt?
Answer: road surfaces

Question: How much is the percentage of use of bitumen for roads is there in the US?
Answer: 85%

Question: How much bitumen is in usual concrete mixtures?
Answer: 5%

Question: What percentage of concrete mixes is aggregates?
Answer: 95%

Question: How many concrete plants are in the US?
Answer: 4,000

Question: Accounting for nearly 75% of asphalt consumption, what is the largest use of asphalt for?
Answer: Unanswerable

Question: What percentage of bitumen consumption in Europe makes up that used for concrete road surfaces?
Answer: Unanswerable

Question: What must happen to plants so they can be mixed with aggregates?
Answer: Unanswerable

Question: What must be cooled so it can mix with aggregates?
Answer: Unanswerable

Question: Europe has 0 asphalt concrete mixing plants and the United States has how many?
Answer: Unanswerable