Curing behavior and mechanical properties of an eco-friendly cold-mixed epoxy asphalt

Cold-mixed epoxy asphalt (CEA) is an eco-friendly material for steel bridge deck pavements. The effects of the asphalt on the curing behavior and mechanical properties of the CEA were studied. The pot life, curing characteristics, and curing kinetics of CEA blends were investigated by rotational vis...

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Bibliographic Details
Published in:Materials and structures 2019-08, Vol.52 (4), Article 81
Main Authors: Si, Jingjing, Li, Yang, Yu, Xin
Format: Article
Language:English
Subjects:
Adhesive strength
Asphalt
Bridge decks
Building construction
Building Materials
Civil Engineering
Curing
Curing agents
Elongation
Engineering
Epoxy resins
Fluorescence
Machines
Manufacturing
Materials Science
Mechanical properties
Original Article
Processes
Reaction kinetics
Rheological properties
Solid Mechanics
Steel bridges
Theoretical and Applied Mechanics
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Summary:Cold-mixed epoxy asphalt (CEA) is an eco-friendly material for steel bridge deck pavements. The effects of the asphalt on the curing behavior and mechanical properties of the CEA were studied. The pot life, curing characteristics, and curing kinetics of CEA blends were investigated by rotational viscosity testing, dynamic shear rheological analysis, and fluorescence microscopy. The results showed that the CEA pot life increased with asphalt content, and the curing apparent activation energy E k of CEA-0.4 was more than two times higher than that of the epoxy resin. The curing reaction between the epoxy resin and curing agent was hindered by the asphalt. According to the FTIR and DSC results, the curing degree of the CEAs decreased with asphalt content. The elongation at break of the CEAs increased, while the tensile and adhesion strength decreased with asphalt content.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-019-1382-5