Development of Plug Joint with Polymer-Modified Rubber Asphalt as Filling Material

Rising traffic volume, heavy loads, and construction activities have raised concerns about expansion joint device damage. This study focuses on developing an innovative expansion joint using polymer-modified rubber asphalt as the filling material to enhance its service life. Styrene–butadiene–styren...

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Bibliographic Details
Published in:Polymers 2023-11, Vol.15 (21), p.4256
Main Authors: Kim, Kyung-Nam, Kim, Yeong-Min, Le, Tri Ho Minh
Format: Article
Language:English
Subjects:
Adhesion
Asphalt mixes
Asphalt pavements
Binders (materials)
Bridges
Butadiene
Civil engineering
Construction
Construction industry
Deformation
Durability
Elastic recovery
Elasticity
Expansion joints
Fillers
Infrastructure
Mastic asphalt
Moisture resistance
Plugs
Polyethylene
Polymer industry
Polymers
Rheology
Rubber
Rubber modified asphalt
Sealing compounds
Service life
Styrenes
Surface layers
Temperature
Traffic volume
Workability
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Summary:Rising traffic volume, heavy loads, and construction activities have raised concerns about expansion joint device damage. This study focuses on developing an innovative expansion joint using polymer-modified rubber asphalt as the filling material to enhance its service life. Styrene–butadiene–styrene (SBS) emerged as a suitable modifier for rubber-modified asphalt, significantly improving elasticity and adhesion. Through the strategic combination of 3- and 2-block linear SBS, the elasticity and adhesion properties were significantly improved, resulting in the formulation of a well-suited polymer-modified rubber asphalt binder. The developed asphalt binder exhibits impressive elastic recovery (61.1% to 66.1%), surpassing commercial products, with enhanced constructability and workability (15% to 21% viscosity reduction). The carefully engineered mastic asphalt mixture showcases self-leveling characteristics at a moderate 210 °C, addressing historical constructability challenges. Settlement is 40% less than traditional hot mix asphalt for surface layers, with improved moisture and stripping resistance, enhancing existing asphalt plug joint durability and workability. Collectively, this novel mixture, comprising polymer-modified rubber and mastic asphalt, showcases the potential to enhance the durability of existing asphalt plug joints while ensuring superior constructability and workability.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym15214256