Changsha Huanghua Airport Runway Overlay of Asphalt Concrete Mixture Optimization
SMA asphalt mixture is the old airport pavement overlay of asphalt concrete most commonly used technical solutions, combined with the previous runway coagulation Concrete Asphalt design, from the perspective of Asphalt Mixture Design. Laboratory produced using different asphalt modifier, additives (fiber, anti-rutting agent) to form several SMA asphalt mixture. Laboratory tests are to be determined each program's conventional indicators, such as pavement rutting performance. Analysis of test results, the final mixture is to be determined the optimal program. The results showed that SBS star relative linear modifier better road performance, the selection of PAN fiber than the lignin additive mixture of additives on the adhesion, crack resistance, resistance to water damaging have a larger increase, which for the SMA in the application of the runway asphalt concrete pavement to provide a basis for improvement.
Evaluation of Recycled Projects for Performance
iii IMPLEMENTATION STATEMENT iv LIST OF TABLES vi LIST OF FIGURES vi
THE RELATION OF ASPHALT DUCTILITY TO PAVEMENT PERFORMANCE
This report, which is part of a general symposium on properties of asphalt affecting pavement performance, emphasizes advantages of considering the ductility-penetration relationship of an asphalt in evaluating the effect of the asphalt characteristics on pavement performance. When available data is analyzed on this basis, there is a strong indication that the consistency at which the asphalt rapidly begins to lose ductility and the temperature at which such consistency occurs is a significant relationship. It is also indicated that for some asphalts, this point occurs at a sufficiently low penetration so that factors other than ductility, as measured in the lab test, control pavement performance; hence the conclusion is often reached that ductility is unimportant.