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Using Roof Shingle for Asphalt Pavement
Engineering and Construction
Pages 3 (753 words)
Asphalt shingles are used widely in order to create roofs especially for residential applications. It is estimated that asphalt shingles comprise between two thirds and four fifths of all materials used in the United States to create roofs.
In addition it contains between 32% and 42% of a coating filler such as limestone followed by some 28% to 42% of granules. The remaining portion of asphalt shingles is composed of fiberglass, cotton rags, paper and adhesives (Carter, 2008). The use of asphalt is pervasive throughout shingle manufacturing and asphalt constitutes a major part of shingles. The large amount of asphalt present in roofing shingles make these shingles suitable for recycling applications such as for constructing roads. It is estimated that the United States alone manufactures around 12.5 billion square feet of asphalt shingles in a single year (Asphalt Roofing Manufacturer's Association, 2012). In recent years there has been a renewed emphasis to recycle asphalt shingles for road based applications since the shingles contain a large amount of asphalt that can be reused. The Environmental Protection Agency estimates that around 11 million tons of waste is created each year from asphalt shingles in the United States. This waste is comprised of around one million tons of scrap generated by various asphalt shingle manufacturers while around ten million tons of waste is generated from construction sites (Environmental Protection Agency, 2005). This indicates that asphalt shingle supply can be considered as a reliable source for use in road construction given its continuous supply. ...
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