Study on recycling steelmaking slag in pavement layers
DOI:
https://doi.org/10.6008/CBPC2179-6858.2020.003.0015Keywords:
Steel Slag, Paviment Structure, Alternative AggregateAbstract
This paper presents the profiles default floors containing LD steel slag as aggregate in asphalt mixture, soil-slag mixture and slag-cement mixture. The LD steel slag, from the Atlantic Steel Company (CSA), has been physically characterized by traditional tests of aggregate paving. Were performed the testing for Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) and X- ray diffraction. Dosages of type CAUQ asphalt mixtures using the alternative aggregate, cement and CAP 50/70 were carried out using the Marshall method, characterized mechanically through testing of indirect tensil strength, resilient modulus, and fatigue of diametrical compression under controlled stress. Presents the results of tests performed with the soil used in the research. The mixture obtained presents good results CAUQ kind of stability, tensile strength and modulus by diametrical compression resilience. The results of the resilient modulus of the soil -gravel mixtures and soil-cement are presented. Were prepared three standard profiles floor using the SisPav program. Steel slag is a favorable LD use in pavements, contributes to economic and environmentally sustainable development.
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