Real scale evaluation of vibration mitigation of sub-ballast layers with added tyre-derived aggregate
作者： Pablo Martínez Fernández , Carlos Hidalgo Signes , Ignacio Villalba Sanchís , Domingo Pérez Mira , Ricardo Insa Franco
DOI: 10.1016/J.CONBUILDMAT.2018.03.027
关键词:
摘要: Abstract This paper represents a final stage in the assessment of granular sub-ballast materials mixed with tyre-derived aggregate (TDA) without binder material. The objective is to evaluate such mixtures through full-scale test under real traffic conditions. An experimental track three 30-metre long sections was constructed: one section built conventional sub-ballast; and other two were containing increasing rubber content. then monitored using accelerometers. results show clear reduction acceleration peaks as content increases. Moreover, excited frequency bandwidth tends become narrower shifts lower frequencies.
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