Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance Evaluation of Fine Graded Superpave Mixtures for Surface Courses
Strategic Highway Research Program A407, 'The Superpave Mix Design Manual for New Construction and Overlays' recommends that aggregate gradations pass below the restricted zone as traffic level increases. The aggregate gradation curve of most of the SUPERPAVE mixes used today, especially in the southeast region of the U.S., follows a typical 'S' shape with fines lying slightly below the restricted zone. Such a gradation yields a relatively coarse mix; however, the use of gradation with fines slightly above the restricted zone is technically acceptable according to SHRP specifications. Since such a mix is similar to the I-1 or I-2 surface mixture used by the NCDOT for surfacing of the secondary roads, it will be more economical as well as more amenable to acceptance by field engineers. The use of natural sand will reduce the build up of fines in the stone quarries and encourage the use of reclaimed asphalt pavement (RAP) material. This study investigated the use of natural sand in the fine and coarse gradations for the surface course mixtures. The mixtures were designed using the SUPERPAVE mix design approach and were evaluated for their performance in terms of resistance to rutting, fatigue, and moisture damage. In addition, the accelerated performance of these mixtures was also evaluated using the Asphalt Pavement Analyzer (APA). The following are the specific objectives of the proposed study: (1) Study the aggregate gradation curves and investigate the use of natural sand in the fine and coarse gradations for the Surface Course mixtures; (2) Design the mixtures using the SUPERPAVE mix design approach and conduct testing of the selected asphalt mixtures, including the SUPERPAVE performance tests to evaluate their performance in terms of resistance to rutting, fatigue, and moisture damage; and (3) Compare the accelerated performance test results of the selected asphalt mixtures using the Asphalt Pavement Analyzer (APA).
Performance Evaluation of Fine Graded Superpave Mixtures for Surface Courses
Strategic Highway Research Program A407, 'The Superpave Mix Design Manual for New Construction and Overlays' recommends that aggregate gradations pass below the restricted zone as traffic level increases. The aggregate gradation curve of most of the SUPERPAVE mixes used today, especially in the southeast region of the U.S., follows a typical 'S' shape with fines lying slightly below the restricted zone. Such a gradation yields a relatively coarse mix; however, the use of gradation with fines slightly above the restricted zone is technically acceptable according to SHRP specifications. Since such a mix is similar to the I-1 or I-2 surface mixture used by the NCDOT for surfacing of the secondary roads, it will be more economical as well as more amenable to acceptance by field engineers. The use of natural sand will reduce the build up of fines in the stone quarries and encourage the use of reclaimed asphalt pavement (RAP) material. This study investigated the use of natural sand in the fine and coarse gradations for the surface course mixtures. The mixtures were designed using the SUPERPAVE mix design approach and were evaluated for their performance in terms of resistance to rutting, fatigue, and moisture damage. In addition, the accelerated performance of these mixtures was also evaluated using the Asphalt Pavement Analyzer (APA). The following are the specific objectives of the proposed study: (1) Study the aggregate gradation curves and investigate the use of natural sand in the fine and coarse gradations for the Surface Course mixtures; (2) Design the mixtures using the SUPERPAVE mix design approach and conduct testing of the selected asphalt mixtures, including the SUPERPAVE performance tests to evaluate their performance in terms of resistance to rutting, fatigue, and moisture damage; and (3) Compare the accelerated performance test results of the selected asphalt mixtures using the Asphalt Pavement Analyzer (APA).
Performance Evaluation of Fine Graded Superpave Mixtures for Surface Courses
N. P. Khosla (Autor:in) / S. Sadasivam (Autor:in) / G. Malpass (Autor:in)
2001
86 pages
Report
Keine Angabe
Englisch
Coarse- Versus Fine-Graded Superpave Mixtures: Comparative Evaluation of Resistance to Rutting
| British Library Online Contents | 2002
Evaluation of Coarse- and Fine-Graded Superpave Mixtures Under Accelerated Pavement Testing
| British Library Online Contents | 2006
Coarse- Versus Fine-Graded Superpave Mixtures: Comparative Evaluation of Resistance to Rutting
| British Library Conference Proceedings | 2002
Evaluation of Coarse- and Fine-Graded Superpave Mixtures Under Accelerated Pavement Testing
| British Library Conference Proceedings | 2006
British Library Online Contents | 2000