Abstract
To effectively evaluate the high-temperature characteristics of a fuel-resistant modified asphalt (FRMA), five different types of asphalt were selected, and a fuel-resistant modifier (FRM) was added to the asphalt to prepare five kinds of FRMA, and the fuel resistance of the 10 above-mentioned asphalt samples was then evaluated. Moreover, the high-temperature performance of different asphalt samples was explored, the influences of the FRM on the penetration, softening point, and rheological indexes of the different asphalt samples were analyzed. A Pearson correlation analysis was conducted on the different high-temperature indexes. Based on the results, compared with the original asphalt, the fuel resistance of the FRMA was improved by about 22% on average; the FRM was able to reduce the penetration, phase angle, and non-recoverable creep compliance of the asphalt; increase the softening point, complex modulus, rutting factors, and creep recovery; and effectively improve the high-temperature performance of the asphalt. However, as the temperature increased, the effect of the FRM on the improvement of the high-temperature performance of the asphalt declined. In addition, compared with the base asphalt, the FRM exerted a more significant effect on the rheological properties of the modified asphalt. According to the Pearson correlation analysis of the high-temperature indexes, apart from penetration, the softening point and rheological indexes featured excellent accuracy and applicability in the evaluation of the high-temperature performance of FRMAs.
Highlights
With the rapid development of transportation, fuel and engine oil leakages caused by traffic accidents have become increasingly common
After adding the fuel-resistant modifier (FRM), there were no obvious differences between the different types of asphalt samples in terms of penetration, so it was less accurate to characterize the high-temperature performance of the asphalt by using penetration
The phase angles (δ) of the fuel-resistant modified asphalt (FRMA) apparently decrease in comparison with that of the original asphalt, which indicated that the addition of the FRM could increase the proportion of high-viscosity particles in asphalt
Summary
With the rapid development of transportation, fuel and engine oil leakages caused by traffic accidents have become increasingly common. In high-grade highways, fuel leakages are usually caused by some poorly conditioned vehicles, especially heavy-duty trucks that can leak large amounts of diesel fuel, forming large areas of oil erosion. On low-grade highways, the dripping of fuel is usually caused by parked vehicles or engine maintenance. As a refined product of crude oil, bitumen has a material composition similar to that of light oil, and it is dissolved in fuel oil and other light oils [1]. When fuel oil, such as gasoline or diesel, drips onto asphalt pavement, the asphalt mixture will cause oil corrosion damage if the fuel oil is not cleaned up in time.
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