Advertisement
Published in:
2022 | OriginalPaper | Chapter
Some Properties of Fiber-Reinforced Road Concrete Using Iron Ore Dressing Wastes
Authors : Rasul Akhmednabiev, Lyudmila Bondar, Oksana Demchenko, Vladimir Shulgin
Published in: Proceedings of the 3rd International Conference on Building Innovations
Publisher: Springer International Publishing
Activate our intelligent search to find suitable subject content or patents.
Select sections of text to find matching patents with Artificial Intelligence. powered by
Select sections of text to find additional relevant content using AI-assisted search. powered by
Abstract
The results of studies of fine-grained road fiber-reinforced concrete using iron ore dressing wastes as fillers at the Poltava mining and processing plant are presented. Ore dressing wastes are crushed rocks of the quartzite group, which are not worse in strength than granites. The waste has a rocky torn surface, which contributes to good adhesion to the cement stone. The uniformity of the of polypropylene fibers distribution in the volume of the concrete mixture was assessed by the change in the degree of separation. The dependences of homogeneity of a concrete mixture with different amounts and volumetric concentration and length of polypropylene fibers on the duration of mixing have been obtained. The graphs were built and the optimal duration of mixing the concrete mixture was determined.
The influence of polypropylene fibers on the strength of concrete of different grades has been investigated. The research results indicate that polypropylene fibers do not have an adhesive bond with cement stone and, therefore, cannot significantly increase the strength of concrete in comparison with steel fibers. However, polypropylene fibers can have a positive effect on the crack resistance and dynamic strength of road concretes.