Asphalt composition and preparation method thereof
A kind of asphalt composition, technology of manufacturing method, applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems such as difficult dispersion of dispersion, uneven dispersion, etc., and achieve the effect of useful viscosity and favorable storage stability
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[0022] Below knot embodiment the present invention is further described.
[0023] The bitumen in the bituminous composition of the present invention may be residuum from crude oil distillation, natural bitumen, or a blend of various bitumen types. Examples of bitumen which may be conveniently used in the present invention include: distilled or "straight run" bitumen, precipitated bitumen such as propane bitumen, naphthenic bitumen or mixtures thereof. The bitumen in the bituminous composition can be prepared by blending the bitumen with a bitumen thinner oil, such as an aromatic, naphthenic, or paraffinic bitumen thinner oil. The penetration of the bitumen at 25°C (measured according to EN1426) is preferably 50-200. (If the bitumen is a blend of bitumen and bitumen cutback oil, the penetration after the bitumen cutback oil has been blended with the bitumen is preferably 50-200.)
[0024] The amount of bitumen in the bituminous composition is from 50% to 70% by weight, howeve...
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