مهدي احساني

One of the ways to improve and enhance the resistance of pavements is to use high-quality materials such as steel slag, which will increase the bearing capacity and life of pavements. The main goal of this research is to eva‎luate the characteristics of asphalt mixture if steel slag is used. In this regard, samples with different percentages of slag and bitumen have been made using the Marshall machine. Then, the tests related to determining the optimal bitumen percentage were carried out on these samples and the values related to the Marshall resistance were taken. In the next step, while making an asphalt sample using a gyrator, functional tests of the asphalt mixture including determining the indirect tensile strength, modulus of elasticity, sandblasting and English pendulum tests have been performed. The results of this research show that if slag is used, the asphalt mixture will perform better. In the best case, adding 40% coarse slag grain has led to a 20% increase in Marshall resistance Also, in general, the indirect tensile strength increases with the addition of slag, and in the best case, by adding 40% fine and 20% coarse slag, the tensile strength improves by 34% in the dry state. On the other hand, adding slag increases the English pendulum number, which is the largest increase in the sample containing 40% of coarse grains, which is about 1.9%. Also, the addition of slag increases the spreading number of sand, which in the best case contains 40% of coarse grains

مخلوط آسفالتي , سرباره فولاد , ريزدانه , درشت دانه , آزمايش عملكردي , قيربهينه , مقاومت لغزندگي

asphalt mixture , steel slag , fine grain , coarse grain , performance test , optimal bitumen , slip resistance

Mehdi Ehsani

Dr. Ameri