Comparison of Performance of Asphalt Prepared with Natural Stone Materials and Artificial Aggregate of Copper Waste Slag

Document Type : Original Article

Authors
Ali Akbar zadeh 1
Alireza Ahmadi Bafghi 2
Hossein Ali Lazemi 3
Ali Akbar Dehghanzadeh Bafghi 4
1 Ph.D., Student, Faculty of Mining Engineering and Technology, Islamic Azad University, Bafaq Branch (Yazd Province), Yazd, Iran.
2 Associate Professor, Faculty of Engineering and Mining Metallurgy, Yazd University, Yazd, Iran.
3 Assistant Professor, Faculty of Mining Engineering and Technology, Islamic Azad University, Bafaq Branch (Yazd Province), Yazd, Iran.
4 Assistant Professor, Faculty of Mining Engineering and Technology, Islamic Azad University, Bafaq Branch, Yazd, Iran.
10.22034/road.2023.393238.2155
Abstract
Slag is a by-product of iron and steel factories, which are often accumulated in large depots around these factories. Over the years, extensive research has been conducted worldwide for the use of this material and several fields have been proposed for this purpose, one of which is the use of slag as a stone material in the production of asphalt. Therefore, this research was conducted in order to compare the performance of asphalt prepared with natural stone materials and copper tailings slag, which has not been studied so far. For this purpose, asphalt samples were prepared with 8 types of natural stone materials and copper waste slag. Then, Marshall and slip resistance tests were performed on the prepared asphalt samples, and the performance of the pavement prepared with natural and artificial materials was evaluated using SPSS software. The results of this research show that Marshall resistance, Marshall ratio and BPN value of asphalt samples prepared with copper slag are 26, 33 and 3.5% less than the average value of asphalt samples prepared with natural aggregate, respectively, and its flow rate is 6% more than the average. The fluidity of asphalt samples prepared with natural aggregate. In addition, the results of the T test show that there is a significant difference between the two parameters of Marshall resistance and Marshall ratio of asphalt prepared with artificial and natural stone materials; However, there is no significant difference between the psychological parameters and BPN of asphalt prepared with artificial and natural stone materials.
Keywords
Road Paving
Waste Slag
Copper Slag
Synthetic Aggregate
Natural Stone Materials
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