Industry Reports

Report No.	IC3 (jot this number down to order)
Title	Cost Comparisons Using Conventional Methods of Rehabilitation Versus Methods Using Asphalt-Rubber Systems
Author(s)	Masters, Milton F., P.E.
Publisher	Manhole Adjusting, Inc.
Pub. Date	1989
Pages	104 pages
Keywords
Description	Since the 1920s, several attempts were made to combine asphalt and rubber, but the end product was too expensive for practical application. An economical asphalt-rubber was developed in the early 1960s by Charles H. McDonald, Materials Engineer for the City of Phoenix, Arizona. The rubber to be used in the mix was ground and vulcanized and could be obtained from waste tires, making it less costly to incorporate in paving grade binders than ever before. A mixture of 15 to 33 percent ground rubber from waste tires was added to paving grade asphalt to form a highly elastic, waterproof membrane. Currently crumb rubber mixed into a paving grade asphalt is becoming widely used as a stress absorbing membrane (SAM), stress absorbing membrane interlayer (SAMI), or as a binder in hot mix asphalt.
Postage	$ 8.00 : U.S. $ 8.20 : Canada/Mexico $ 8.40 : Rest of the World