Investigation of the advantages and disadvantages of Warm mix asphalt (WMA)

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Document Type : Original Article

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کوی ارتش فاز 2 خیابان بابک کوچه بابک دوم شرقی روبه روی مجتمع فدک

10.22034/road.2021.258156.1924

Abstract

Hot Asphalt Mixture 1 is traditionally produced at temperatures between 140 and 160 °C, which results in high energy (fuel) and greenhouse gas emissions. The asphalt industry seeks to save energy and environmental benefits in the process of producing hot and cold asphalt. Efforts have been made to increase environmental awareness in recent years in various countries, especially in the European Union and the United States, based on various environmental protocols, to reduce the production and emission of greenhouse gases into the air. The hot mixing asphalt industry is constantly reviewing technological developments to reduce energy consumption, reduce emissions, increase material efficiency, and manufacture asphalt mixes. Warm mix asphalt 2 two new recycling technologies developed in Europe, one of these efforts, Warm mix asphalt is produced in the temperature range of 30 to 100 degrees Fahrenheit less than hot mix asphalt. The results showed that the use of Warm mix asphalt mixture reduces energy consumption, reduces emissions, reduces the intensity of bitumen oxidation, rapid reopening of traffic and reduces harmful pollutants for workers and also the most important disadvantages of this type of asphalt was high moisture sensitivity due to The low temperature of production and mixing can be mentioned.

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