نوع مقاله : مقاله پژوهشی
گروه مهندسی مکانیک، واحد مشهد، دانشگاه آزاد اسلامی، مشهد، ایران
عنوان مقاله [English]
The major national investment in the transportation sector is the creation and construction of pavements. Currently in Iran, most of the pavements are asphalt mixture. It has been damaged by the passage of time, traffic loads, and atmospheric changes. One of the most important types of flexible pavements is the change of permanent forms known as rutting. In recent years, the use of metal melting slag, one of the waste of the metal melting plants, has been considered as an alternative to parts or all rock materials in different layers of metal. in this study, we investigated the use of different percentages of steel slag as a percentage of coarse rock material in gradation of mixture (0 - 25 - 75 - 75 % of slag in alternative rock material)… using the method of mixing marshall, optimum bitumen and other Marshall parameters. In order to investigate the properties of the pure bitumen, penetration point, ductility, viscosity, and degree of fire were performed. Also, the tests of marshall and flow, indirect tensile, moisture susceptibility, resilient modulus, dynamic creep and wheel placement were performed to investigate the effect of the use of فولاد slag on the functional properties of asphalt mixture. The results of this study showed that the compressive strength, indirect tensile strength and tensile strength ratio (saturation to dry of mixtures containing electric arc furnace (EAF) steel slag were higher than control mixture.