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asphalt
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asphalt

Mineral mixture containing semisolid brown or black bitumen, used in the construction industry. Asphalt is mixed with rock chips to form paving material, and the purer varieties are used for insulating material and for waterproofing masonry. It can be produced artificially by the distillation of petroleum.

The availability of recycled coloured glass led in 1988 to the invention of glassphalt, asphalt that is 15% crushed glass. It is used to pave roads in New York.

Considerable natural deposits of asphalt occur around the Dead Sea and in the Philippines, Cuba, Venezuela, and Trinidad. Bituminous limestone occurs at Neufchâtel, France.
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? Mentioned in ? References in periodicals archive
 
These high-molecular weight components end up in asphalts and roof shingles, but larger-pore catalysts could convert them into fuels, which are more valuable.
Into the void: porous crystals could do more chemistry by Cunningham, A. / Science News
We hope that the program will lead to a better understanding of the variability in testing roofing asphalts.
Asphalt Institute, PRI debut binder specification database by Construction & Demolition Recycling
Other families include porous concretes and asphalts being developed by engineers and landscape architects.
Paving paradise: the peril of impervious surfaces by Frazer, Lance / Environmental Health Perspectives
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