A comparative study of the properties CO2-based polyurethane modified asphalts prepared by prepolymer and in-situ polymerization methods

Xing Gong,Quantao Liu,Pei Wan,Shuaichao Chen,Huan Wang,Jinyi Wu,Shaopeng Wu

Construction and Building Materials（2023）

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摘要

•PPC-PU prepolymer and PPC-PU were successfully prepared.•P-PUMA and I-PUMA can be cured in natural environment, with a curing rate higher than 80 % after curing for 15 d.•PPC-PU and its prepolymer have good compatibility with asphalt.•PPC-PU and its prepolymer improve the high and low temperature performance of asphalt.

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关键词

CO2-based polyurethane,Modified asphalt,Environmental curing,High temperature properties,Low temperature properties

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