Suitable Bitumen Zoning Based on Performance Grade in Hamadan Province

Document Type : Original Article

Authors

1 Department of Civil, Architecture and Arts, Islamic Azad University, Science and Research Branch, Tehran, Iran.

2 Civil Engineering and Management, Civil Engineering, Pooyesh Institute of Higher Education, Qom, Iran.

3 Department of Road & Transportation, Faculty of Civil, Architecture and Arts, Islamic Azad University, Science and Research Branch, Tehran, Iran.

10.22091/cer.2019.4664.1161

Abstract

Due to the importance of maintenance and repair costs, the quality of the asphalt quality is of particular importance. Bitumen is one of the most important components of asphalt mixing. It is essential to select the appropriate type according to the weather and traffic conditions of each area in order to increase the quality and durability of the asphalt. A study based on the Sharp method in the bitumen classification on a different level of confidence can provide optimal results with the combination of technical and economic conditions. In this research, using the statistics of the meteorological stations of Hamedan province, the performance index is PGXXYY at four levels of confidence of 50, 84, 98, and 99.9 percent, and considering the traffic conditions in the main roads of the province. Based on the results of the research, at lower levels of confidence, more low-grade bitumen will be more covered, and with increasing confidence, the role of the bitumen will be higher in the higher category and at a certain level of certainty the applied traffic conditions of the category of functional bitumen used in increasing zoning Based on this research, it is necessary to zone the functional index of bitumen at the country level in terms of weather conditions and traffic at different levels of confidence level in order to determine and select according to the technical and economic principles of bitumen consumption.

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Main Subjects

References

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