Asphalt

Ohne Zusammenfassung     

Asphalt

Ohne Zusammenfassung     

Asphalt, Teer

Ohne Zusammenfassung     

Asphalt, Bitumen

Ohne Zusammenfassung     

Asphalt, Bitumen

Ohne Zusammenfassung     

Massenspektrometrische Analyse von Asphalt

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Polymer Blends Modified Asphalt

Asphalt is an important low-cost thermo-plastic material which is widely used for construction, in particular as road-paving. Therefore it is exposed to a wide range of load and weather conditions. Increasing traffic factors, such as heavier loads, higher traffic volume and higher tire pressure demand higher performance pavements. However, this kind of materials does not have good mechanical properties because it is hard and brittle in cold weather, and soft and fluid in a hot environment.     

Ueber die Zusammensetzung von Asphalt

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Teer, Pech, Asphalt

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Asphalt modification with different polyethylene-based polymers

Several polyethylene and polyethylene-based copolymers were used to modify a 70/100 penetration grade asphalt from vacuum distillation. The morphological and storage stability analyses showed that, in all cases, the obtained materials were strongly biphasic and tended to separate into polymer-rich and asphalt-rich phases. However, among the tested polymers, a linear low-density polyethylene allowed for the preparation of a mix that had strongly enhanced mechanical properties, with respect to those of the base asphalt. Mixes with different percentages of this polymer were, therefore, prepared and studied from a rheological point of view, both in the range of small and large deformations. The analysis showed that, in spite of its insolubility, the polymer spread continuously through the asphalt matrix and that the obtained properties can probably be ascribed to the formation of a very low extent of crosslinking between the polymer chains.