Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/35399
Title: Top-down cracking self-healing of asphalt pavements with steel filler from industrial waste applying microwaves
Authors: Franesqui, Miguel A. 
Yepes, Jorge 
García-González, Cándida 
UNESCO Clasification: 330506 Ingeniería civil
3312 Tecnología de materiales
250603 Geología aplicada a la ingeniería
Keywords: Pavement cracking
Pavement self-healing
Metallic filler
Microwave
Crack depth
Ultrasound
Pavement maintenance
Volcanic aggregate
Issue Date: 2017
Journal: Construction and Building Materials 
Abstract: This work shows the self-healing results of surface cracks on bituminous mixtures after microwave heating. Different mixtures (semi-dense AC, BBTM and PA) with diverse types, sizes and proportions of metallic additions were tested (steel wool, steel filing and metallic powder). 3 aspects were evaluated: a) influence of the mass and type of addition on the heating speed; b) temperature increase ratio with the specific energy; c) monitoring of the healing process using ultrasounds. It was found that metallic filler replacing the mineral powder was the most efficient and practical addition. This method allows complete closure of the cracks, using an industrial waste, and offers certain improvements compared to induction heating. The results validate the microwaves healing capacity, as well as the use of ultrasounds for tracking the crack depth.
URI: http://hdl.handle.net/10553/35399
ISSN: 0950-0618
DOI: 10.1016/j.conbuildmat.2017.05.161
Source: Construction and Building Materials[ISSN 0950-0618],v. 149, p. 612-620
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