Investigation of usability of steel fibers in asphalt concrete mixtures

Serin S., MOROVA N., SALTAN M., TERZİ S.

Construction and Building Materials, vol.36, pp.238-244, 2012 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 36
  • Publication Date: 2012
  • Doi Number: 10.1016/j.conbuildmat.2012.04.113
  • Journal Name: Construction and Building Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.238-244
  • Keywords: Asphalt concrete, Asphalt mixture, Flexible pavement, Steel fiber
  • Isparta University of Applied Sciences Affiliated: No

Abstract

In this study, the usability of steel fibers in order to bear the stresses occurring at the surface layer of pavement, which are directly subjected to the traffic effects, was investigated. In this context, specimens were produced and tested under Marshall Stability Test, and the optimum bitumen content value for the aggregates sample to be used was determined. Results showed that based on the determined value for the optimum bitumen content (5.5%), three specimens for each of a series of different fiber rates (0%, 0.25%, 0.50%, 0.75%, 1.0%, 1.5%, 2.0%, 2.5%) were prepared and the optimum value for fiber rate that results in the best stability value was determined as 0.75%. As a result, steel fiber additions can be used in binder course of flexible pavement because of its positive stability impact. © 2012 Elsevier Ltd. All rights reserved.