Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reinforcement of steel-slag asphalt concrete using polypropylene fibers
Steel-slag asphalt concrete (SSAC) is a type of asphalt mixture that uses slag particles instead of conventional aggregates. It has been proven that replacement of course aggregates by steel-slag particles is the best composition of SSAC mixtures. Despite benefits derived from SSAC, like higher resistance to rutting, the mixture has some disadvantages. Higher optimized asphalt content is the major disadvantage of SSAC compared to ordinary AC mixtures. In order to solve this problem, it is necessary to decrease the bitumen absorption of slag aggregates. One approach that can be taken to increase the viscosity of the bitumen and/or to decrease the effective surface of slag aggregates is reinforcement of asphalt mixtures by using polypropylene (PP) fibers. The main aim of this paper is, therefore, to introduce a novel AC mixture, i.e. PP fiber-reinforced steel-slag asphalt concrete. In this respect, the optimized asphalt content was identified by using Marshall method. Analysis of results shows that the treatment reinforced with 2% of 19mm PP fibers experiences a decrease in optimized asphalt content about 15% in comparison with the neat mixture, i.e. SSAC sample. Moreover, indirect tensile strength and resilient modulus (MR) have increased.
Reinforcement of steel-slag asphalt concrete using polypropylene fibers
Steel-slag asphalt concrete (SSAC) is a type of asphalt mixture that uses slag particles instead of conventional aggregates. It has been proven that replacement of course aggregates by steel-slag particles is the best composition of SSAC mixtures. Despite benefits derived from SSAC, like higher resistance to rutting, the mixture has some disadvantages. Higher optimized asphalt content is the major disadvantage of SSAC compared to ordinary AC mixtures. In order to solve this problem, it is necessary to decrease the bitumen absorption of slag aggregates. One approach that can be taken to increase the viscosity of the bitumen and/or to decrease the effective surface of slag aggregates is reinforcement of asphalt mixtures by using polypropylene (PP) fibers. The main aim of this paper is, therefore, to introduce a novel AC mixture, i.e. PP fiber-reinforced steel-slag asphalt concrete. In this respect, the optimized asphalt content was identified by using Marshall method. Analysis of results shows that the treatment reinforced with 2% of 19mm PP fibers experiences a decrease in optimized asphalt content about 15% in comparison with the neat mixture, i.e. SSAC sample. Moreover, indirect tensile strength and resilient modulus (MR) have increased.
Reinforcement of steel-slag asphalt concrete using polypropylene fibers
Amuchi, Majid (Autor:in) / Sayyed Mahdi Abtahi (Autor:in) / Koosha, Behrooz (Autor:in) / Sayyed Mahdi Hejazi (Autor:in) / Sheikhzeinoddin, Hossein (Autor:in)
Journal of Industrial Textiles ; 44 ; 526-541
2014
16 Seiten, Bilder, Tabellen, 18 Quellen
Aufsatz (Zeitschrift)
Englisch
| Europäisches Patentamt | 2021
Serviceability Behavior of Reinforcement Concrete Beams with Polypropylene and Steel Fibers
| Trans Tech Publications | 2015
Serviceability Behavior of Reinforcement Concrete Beams with Polypropylene and Steel Fibers
| British Library Conference Proceedings | 2015