| Report No. | AZP10 (jot this number down to order) |
| Title | ADOT's Use of Crumb Rubber in Asphalt Pavements |
| Author(s) | Way, George |
| Publisher | Arizona DOT |
| Pub. Date | 1997 |
| Pages | 10 |
| Keywords | rubber, asphalt, mix, recycle, cracking |
| Description | The ADOT has used crumb rubber from ground tires since the late 1960's to primarily reduce reflective cracking. In 1988, ADOT started to use crumb rubber mixed with hot asphalt, commonly referred to as asphalt rubber as a binder in hot-mix asphalt. Typically, these mixes are either open-graded or gap-graded and from 12.5mm to 25mm or 25mm to 50mm in thickness, respectively. Open-graded mixes generally contain 9 to 10% asphalt rubber binder, whereas the gap-graded contains generally 7.5 to 8.5%. To date, field performance has been very good with very little reflective cracking. As an extra benefit, the ground tire rubber from over three million tires in Arizona has been recycled since 1988, in the making of hot-mix asphalt with asphalt rubber. |
| Postage | $
2.00 : U.S. $ 2.20 : Canada/Mexico $ 2.40 : Rest of the World |
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Tempe, AZ 85281 USA
480.517.9944
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