Accession Number : AD0878900

Title :   Rejuvenation of Asphalt Pavements.

Descriptive Note : Technical Rept. Jun 69-Aug 70,

Corporate Author : MATERIALS RESEARCH AND DEVELOPMENT INC OAKLAND CA

Personal Author(s) : Rostler, F. S. ; White, R. M.

Report Date : DEC 1970

Pagination or Media Count : 69

Abstract : The physical and chemical aspects of the manufacture of paving grade asphalts and of asphalt performance are presented in sufficient detail to provide background information for understanding the physical, chemical and mechanical aspects of paving rejuvenation. The principal facts discussed are substantiated by references to the technical literature, which should be consulted for additional information regarding details. Theoretical and practical considerations pertaining to the use of asphalt rejuvenators are discussed, and laboratory methods of evaluating the utility of asphalt rejuvenators are detailed. The present status of knowledge regarding asphalt manufacture, causes of deterioration of asphalt pavements, and reversibility of the deterioration are depicted in graphs and flow charts. Five specimens, typical of commercially available asphalt rejuvenators, and tests performed on them are described. The test results obtained are tabulated. Criteria to be used in tentative specifications to be issued before field testing are suggested. (Author)

Descriptors :   (*PAVEMENTS, DEGRADATION), (*ASPHALT, PAVEMENTS), PERFORMANCE(ENGINEERING), AGING(MATERIALS), MANUFACTURING, PHYSICAL PROPERTIES, MECHANICAL PROPERTIES, TEST METHODS.

Subject Categories : Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE