Asphalt plant
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An asphalt plant is a plant used for the manufacture of
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Asphalt_plant_for_construction.jpg/220px-Asphalt_plant_for_construction.jpg)
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The manufacture of coated roadstone demands the combination of a number of aggregates, sand and a filler (such as stone dust), in the correct proportions, heated, and finally coated with a binder, usually bitumen based or, in some cases tar, although tar was removed from BS4987 in 2001 and is not referred to in BSEN 13108/1. The temperature of the finished product must be sufficient to be workable after transport to the final destination. A temperature in the range of 100 to 200 degrees Celsius is normal.
Countries have individual specifications stipulating how much of the raw material can be allowed from recycled asphalt. In-depth research shows that addition of up to 20% recycled asphalt produces the same quality of asphalt compared to 100% virgin material. The quality of asphalt starts reducing once the percentage of recycled asphalt increases beyond 20%.
Main Structure
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Narragansett_Improvement_Company%2C_Providence_RI.jpg/220px-Narragansett_Improvement_Company%2C_Providence_RI.jpg)
The asphalt plant is mainly composed of cold aggregate supply system,
References
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