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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 754 pages |
| ISBN: | 978-0-9879917-3-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Re-Use Of Steel Slags In High Performance Asphalt Concretes For Road Flexible Pavements
Marco Pasetto1; Nicola Baldo2;1UNIVERSITY OF PADUA, Padova, Italy; 2UNIVERSITY OF PADOVA, Padova, Italy;
Type of Paper: Regular
Id Paper: 224
Topic: 12
Abstract:
The paper presents the results of a laboratory study aimed at verifying the possibility to use particular types of electric arc furnace (EAF) steel slags, in substitution of the natural aggregates, in the production of high performance bituminous mixtures (Stone Mastic Asphalt, wearing course and base course asphalts) for road flexible pavements, characterized by a steel slag content higher than the 89% in weight.The experimental trial has been articulated in a preliminary study of the physical-geotechnical properties of the EAF steel slag and in the following design of the asphalt mixtures, on the basis of the Marshall procedure. The performance of the asphalt mixes, in terms of stiffness and moisture susceptibility, has been investigated, through dynamic modulus tests at various frequencies and indirect tensile strength tests, for both dry and wet conditions.All the different types of bituminous mixtures have completely satisfied the requisites for acceptance in the road sector technical standards (Marshall Stability and Quotient up to 1,530 MPa and 462 daN/mm respectively, depending on the mix) thus resulting as suitable for use in the construction of road infrastructures.