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Natural asphalt mixture in asphalt
It has been discovered that asphalt cement can be toughened with powder gilsonite and thinned with a reactive oil.
Reactive oil is an oil that contains a high content of unsaturated fatty acids. By using a reactive oil, the oil would cure or react after application of the asphalt cement to the highway, thereby allowing for a lower viscosity application by curing later to prevent rutting.
The preferred natural asphalt is asphaltite such as natural asphalt.
Natural asphalt preferably one having a melting or softening point near about 300° F. so that it is more easily softened and blended with the petroleum asphalt at such temperatures.
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