Abstract
Today Municipal Solid Waste Incinerator Bottom Ash is to a large extent used in road construction on Denmark. It is primarily used as fill in embankments and as granular subbase course. This is the result of development during the last 20 years; at the same time incineration of waste has become an substantial element in the handling of waste in Denmark. The use of bottom ash as subbase in light and medium trafficked roads, paths and parking areas has proved to be successful. In 1993, a more heavily trafficked test road was constructed. Layers of 20 cm bottom ash from various plants was used as subbase and compared to the standard material which is virgin, relatively uniform sand. After 3 years of medium to heavy traffic, the test road shows no signs of rutting or progressive damage or other signs of rapid deterioration of the road construction. However, a period of 3 years has been estimated to be too short to recommend general use of bottom ash in heavily trafficked roads. This paper treats the results from the test road and the Danish experience gained from the use of incinerator bottom ash in road construction.
Published Version
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