Analysis and Evaluation of Possibilities for the Use of Warm Mix Asphalt in Lithuania

Audrius Vaitkus, Donatas Čygas, Alfredas Laurinavičius, Zigmantas Perveneckas

Abstract


Production of hot mix asphalt (HMA) requires a lot of consumption of energy, exhaustion of CO2 and other environment unfriendly materials. The fumes of HMA are injurious for roadmen and asphalt plant workers. The use of warm mix asphalt (WMA) allows reducing the HMA production temperatures at which the material is mixed and laid on the road. WMA helps to reduce the working temperature of asphalt up to 30 °C. This article presents the overview of different technologies of WMA production, advantages and disadvantages of these technologies. The laboratory research includes research of physical and mechanical properties of WMA produced with different technologies and different amount of additives for temperature lowering. Two different kinds of asphalt where tested in the laboratory. The chemical additives and chemical and natural zeolite were used for WMA production in the laboratory.


Keywords:

warm mix asphalt (WMA); low temperature asphalt; hot mix asphalt (HMA); zeolite; chemical additives

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References


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DOI: 10.3846/1822-427X.2009.4.80-86

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