Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories (2020) / Chapter Skim
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Pages 59-61
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59 Conclusions Chapter Summary and Key Findings As state highway agencies move toward performance-related specifications for asphalt- mixture design and construction and the evaluation of new materials, performance testing is becoming more common. Various research studies have shown that different specimen fabrication methods can significantly impact measured performance properties.
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60 Practices for Fabricating Asphalt Specimens for Performance Testing in Laboratories the specimen fabrication process is widespread both at DOT laboratories as well as partner laboratories. The use of loose-mix long-term conditioning is more commonly used than compacted mixture conditioning (AASHTO R 30)
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Conclusions 61 • The appropriate conditioning protocols to use for fabrication of performance test specimens were identified as a knowledge gap through the surveys and literature review. There are several ongoing national research projects addressing this question.
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