Abstract
Asphalt mixtures were immersed in the fuel oil to study the oil corrosion resistance. The mechanical performance of asphalt mixtures in the oil was evaluated by the observation, mass loss measurement, Marshall stability test and splitting strength test. Effects of immersion time, binder types, and anti-oil corrosion additive content were analyzed. It is found that there is the evident stripping after immersing the mixture in the oil. The stability test and strength significantly decrease. Using the anti-oil corrosion additive can effectively improve the mechanical performance of asphalt mixtures in the oil. It still can satisfy the criteria after immersing for 7 days. Finally, the optimum anti-oil corrosion additive content of 0.4% is recommended.
Highlights
Asphalt mixtures were immersed in the fuel oil to study the oil corrosion resistance
The oil corrosion composed of alkanes, cycloparaffins, aromatic resistance of two different types of asphalt mixtures was hydrocarbons and their derivatives, which are soluble in organic solvents such as diesel and gasoline[3]
Compared the Marshall stability of asphalt mixture specimens with immersion oil before and after 60 °C. rms of residual stability ratio after oil immersion is defined as the evaluation index, the calculation formula is shown in formula (2)
Summary
The oil immersion vessel is a translucence plastic container which is quadrangular shape. After the standard Marshall test piece was putted into the container, add 500ml No 0 fuel oil. The oil corrosion resistance of the asphalt mixture was evaluated from the aspect of appearance. Taking out the immersion test piece every day to observe the apparent change, and measuring the quality change of the test piece after being dried to constant weight by the blower. The total immersion time was 7 days. The calculation formula of mass loss rate is shown in formula (1). L is mass loss rate /%, M0 is the mass of specimens before oil immersion /g, M1 is the mass of specimens after oil immersion /g
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