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- W2247683435 abstract "The NCHRP 9-16 project, Relationship Between Superpave Gyratory Compaction Properties and Permanent Deformation of Pavements in Service, was initiated to determine if there were any connection between properties determined during the Superpave gyratory compaction (SGC) process and the rutting resistance of an asphalt mixture. Some Strategic Highway Research Program (SHRP) and post-SHRP research indicated that properties of the SGC densification curve could potentially be related to the expected rutting resistance of an asphalt mixture. Confirmation of the permanent deformation resistance of Superpave mixtures during the mix design and quality control processes designs is desirable. As a result, state agencies and the asphalt industry are considering the use of an additional test (or tests) during the mix design process. If research indicates that SGC can be used to estimate the rutting resistance of asphalt mixtures, or identify gross mixture instability, then the need for an additional performance testing may be lessened. Evaluation of the results from the NCHRP 9-16 laboratory experiment indicated that the best compaction parameter related to asphalt mixture shear stiffness and rutting potential appeared to be N-SR sub max as determined using a modified Pine AFG1 SGC. The N-SR sub max parameter is the number of gyrations at which the stress ratio (shear stress divided by vertical stress) reaches a maximum value. The N-SR sub max parameter appears to lend itself easily to mix design or quality control testing. Threshold values were identified separating mixtures with good and poor expected performance. Unlike other parameters, the N-SR sub max value for an asphalt mixture specimen can be determined immediately following the compaction process. Initial laboratory mix design validation of two mixes confirms the utility of the N-SR sub max parameter as a mixture performance-screening tool. Based on the findings of the experiment, it appears that the N-SR sub max determined during SGC provides a general indication of expected mixture rutting performance." @default.
- W2247683435 created "2016-06-24" @default.
- W2247683435 creator A5048988740 @default.
- W2247683435 date "2002-01-01" @default.
- W2247683435 modified "2023-09-27" @default.
- W2247683435 title "RELATIONSHIP BETWEEN SUPERPAVE GYRATORY COMPACTION PROPERTIES AND THE RUTTING POTENTIAL OF ASPHALT MIXTURES (WITH DISCUSSION)" @default.
- W2247683435 hasPublicationYear "2002" @default.
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