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A platform for research: civil engineering, architecture and urbanism
Syncretization mechanism between emulsified asphalt and aged asphalt in cold recycled asphalt mixture using developed demulsification-dehydration method
Highlights The new demulsification-dehydration method is developed to prepare the syncretic asphalt sample; Bee-like structure formation includes the three stages of adsorption, aggregation and incorporation; Asphalt oxidation reaction increases its surface roughness and relative content of sulfoxide groups; A interpenetrating network structure in the WSEA is denser than that in aged SBS modified asphalt; The syncretization between WSEA and aged asphalt mainly occurs among four asphalt components.
Abstract To reveal the syncretization mechanism between waterborne epoxy resin/styrene butadiene rubber latex modified emulsified asphalt (WSEA) and aged asphalt, a new demulsification-dehydration method was developed to prepare syncretic asphalt samples, and their changes in microstructures and compositions were characterized. Results indicate that bee-like structure formation process in asphalt includes polymer wax adsorption, asphaltene aggregation and bee-like structure incorporation. Intercalated structures in WSEA become more obvious owing to interpenetration network. Increasing curing temperature or prolonging curing time facilitates oxygen uptake reaction of asphalt, and promotes bee-like structure incorporation. The syncretization between WSEA and aged asphalt mainly occurs among four asphalt components.
Syncretization mechanism between emulsified asphalt and aged asphalt in cold recycled asphalt mixture using developed demulsification-dehydration method
Highlights The new demulsification-dehydration method is developed to prepare the syncretic asphalt sample; Bee-like structure formation includes the three stages of adsorption, aggregation and incorporation; Asphalt oxidation reaction increases its surface roughness and relative content of sulfoxide groups; A interpenetrating network structure in the WSEA is denser than that in aged SBS modified asphalt; The syncretization between WSEA and aged asphalt mainly occurs among four asphalt components.
Abstract To reveal the syncretization mechanism between waterborne epoxy resin/styrene butadiene rubber latex modified emulsified asphalt (WSEA) and aged asphalt, a new demulsification-dehydration method was developed to prepare syncretic asphalt samples, and their changes in microstructures and compositions were characterized. Results indicate that bee-like structure formation process in asphalt includes polymer wax adsorption, asphaltene aggregation and bee-like structure incorporation. Intercalated structures in WSEA become more obvious owing to interpenetration network. Increasing curing temperature or prolonging curing time facilitates oxygen uptake reaction of asphalt, and promotes bee-like structure incorporation. The syncretization between WSEA and aged asphalt mainly occurs among four asphalt components.
Syncretization mechanism between emulsified asphalt and aged asphalt in cold recycled asphalt mixture using developed demulsification-dehydration method
Yao, Xiaoguang (author) / Xu, Huiyu (author) / Xu, Tao (author)
2022-02-11
Article (Journal)
Electronic Resource
English
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