A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recycled Asphaltic Concrete Mix Design
The report is concerned with the design and characterization of recycled asphaltic concrete pavements in the southern part of Arizona. Recycled mixtures designed by Arizona Department of Transportation (ADOT) were obtained, reviewed, and compared with properties of the constructed pavement as represented by cores taken from the roadway. Measurements made from the recycled mixtures obtained from the cores consisted of density, Marshall stability and flow, aggregate gradation and specific gravity, and bituminous content and its viscosity. From the measured data, calculations were made for voids in the mineral aggregate and for air voids in the compacted mixture. These measurements and calculations showed that aggregate gradation control was excellent; however, values for air-void content and Marshall flow for the recycled portion of the cores indicated these to be cautiously low and high, respectively. These two measurements were evaluated for designing the new mixture. A theoretical procedure used without the benefit of laboratory testing for the design indicated a good potential for future usage since its results compared favorably with the final recycled mixture placed in the road. Recommendations were to continue the use of asphaltic cement as the recycling agent and to change to an open gradation for the recycled mixture.
Recycled Asphaltic Concrete Mix Design
The report is concerned with the design and characterization of recycled asphaltic concrete pavements in the southern part of Arizona. Recycled mixtures designed by Arizona Department of Transportation (ADOT) were obtained, reviewed, and compared with properties of the constructed pavement as represented by cores taken from the roadway. Measurements made from the recycled mixtures obtained from the cores consisted of density, Marshall stability and flow, aggregate gradation and specific gravity, and bituminous content and its viscosity. From the measured data, calculations were made for voids in the mineral aggregate and for air voids in the compacted mixture. These measurements and calculations showed that aggregate gradation control was excellent; however, values for air-void content and Marshall flow for the recycled portion of the cores indicated these to be cautiously low and high, respectively. These two measurements were evaluated for designing the new mixture. A theoretical procedure used without the benefit of laboratory testing for the design indicated a good potential for future usage since its results compared favorably with the final recycled mixture placed in the road. Recommendations were to continue the use of asphaltic cement as the recycling agent and to change to an open gradation for the recycled mixture.
Recycled Asphaltic Concrete Mix Design
R. A. Jimenez (author) / W. R. Meier (author)
1986
85 pages
Report
No indication
English
Highway Engineering , Construction Materials, Components, & Equipment , Construction Equipment, Materials, & Supplies , Adhesives & Sealants , Bituminous concretes , Recycling , Flexible pavements , Surface resistance , Variations , Viscosity , Pavements , Aggregates , Design criteria , Density(Mass/volume) , Arizona
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