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Hot Mix Asphalt (HMA) Frequently Asked Questions
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How widely is asphalt used?
About 94 percent of roads and highways in the United States are surfaced with asphalt. In Cayman, 100% of all major roads are surfaced with asphalt.
Is asphalt generally considered to be less expensive than concrete?
There have been numerous studies within the United States and Europe which have shown that asphalt pavements generally have a lower life cycle cost.
What are some other advantages of using asphalt?
In addition to being very cost-effective in comparison to concrete, an increasingly important factor is the traffic delay cost incurred by the public during construction or rehabilitation. You can't close down a busy road and spend weeks repairing it without costing businesses and individuals potentially millions of dollars. With asphalt, you can usually perform construction and rehabilitation very quickly at night or off-peak hours. For example, at the beginning of the shift (10 p.m.), traffic control can be set up and followed by milling and overlay operations with everything gone by 6 a.m. The average commuter goes to work the next day, drives on a whole new pavement, and has never even seen an orange cone.
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