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Published in:
2022 | OriginalPaper | Chapter
Comparing Laboratory Curing and In-Pavement Curing of a Foamed Bitumen Stabilized Base Course Material
ISBM Lyon 2020
Authors : Thomas Weir, Greg White
Published in: Proceedings of the RILEM International Symposium on Bituminous Materials
Publisher: Springer International Publishing
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Abstract
Foamed bitumen stabilization is well-established as a beneficial technology for the improvement of existing pavement materials and for expedient pavement construction or rehabilitation. Laboratory curing indicative of in-pavement conditions is crucial to effective foamed bitumen stabilized material characterization for pavement design, with significant project and pavement lifecycle cost implications resulting from laboratory mix design that does not represent actual pavement behavior. This research compares Australian foamed bitumen base laboratory curing practice to a simulated in-pavement condition and concludes that the accelerated laboratory curing was more representative of 20–30 days of in-pavement curing, rather than the intended medium (3–6 month) term curing condition. It is recommended that new laboratory curing protocols be developed to better represent typical in-pavement curing conditions.