Bitumen Stabilization of Base Layers for Pavement Rehabilitation Reaches Greater Heights
Publication: Airfield and Highway Pavements 2021
ABSTRACT
Cold recycling has globally lifted foamed bitumen and emulsion stabilization technology to unprecedented levels. From humble beginnings of five decades ago, where bitumen stabilization provided sustainable solutions for road rehabilitation under light to moderate traffic, cold recycling has evolved into a technology that addresses the demands of heavily trafficked highways with a high percentage of recycled asphalt. The key to the success of road recycling is reliable pavement performance evaluation (including durability) of recycled materials through the identification of the critical parameters, their tests defined by well-defined protocols, a reliable structural design function to estimate their service life as well as sound specification limits to measure against. This paper uses reclaimed asphalt pavement (RAP) as an increasingly important component of cold recycling to highlight the technological advances that have taken place in the last two decades. The development and standardization of mix and structural design processes for bitumen stabilized materials have enabled optimization and reliable application of the technology.
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Airfield and Highway Pavements 2021
Pages: 258 - 270
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© 2021 American Society of Civil Engineers.
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Published online: Jun 4, 2021
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