E3S Web Conf.
Volume 157, 2020Key Trends in Transportation Innovation (KTTI-2019)
|Number of page(s)||12|
|Section||Energy Efficient Building Design|
|Published online||20 March 2020|
Using Steel-Smelting Slag as a Raw Material Component in the Production of Asphalt Concrete
Belgorod State Technological University VG Shukhov, Kostukova str., 46, 308012, Belgorod, Russia
2 Perm National Research Polytechnic University, Komsomolsky Prospect, 29, 614990, Perm, Russia
* Corresponding author: email@example.com
The possibility of using polydisperse steel-smelting slag for the production of type B asphalt concrete is investigated, the possibility of its use as a mineral powder, crushing screening and crushed stone is considered. As a result of the study, it was found that a promising area for the use of slag raw materials in the technology for the preparation of asphalt mixes is: as a mineral powder - without additional processing steps; crushing screening - with the development of additional technological operations. The use of raw materials as crushed stone is impractical because of the high average density of the final asphalt mixture. Based on the test results, the characteristics of the fatigue properties of asphalt concrete from fine-grained dense mixtures of type B made on mineral powders from slag and limestone were obtained. It was established that at the initial moment, a large number of cycles to failure are characterized by compositions on slag powder, however, samples from this series tested after 45 days showed a significant rigidity increase and were destroyed earlier than similar samples on limestone. Obviously, this phenomenon is associated with an increase in the brittle properties of the material due to the formation of crystallization-condensation bonds in the structure of asphalt concrete containing slag.
© The Authors, published by EDP Sciences, 2020
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