Abstract: Cold in-place recycling technology of emulsified asphalt is an ideal technical scheme to significantly reduce carbon emission in the process of road maintenance. According to the technical requirements and challeges of in-situ cold regeneration, this work realizes the 100% utilization of RAP and controls the amount of the emulsified asphalt with the best oil film thickness. Aiming at the common fatigue cracking and low-temperature cracking diseases of cold recycled pavement, low-temperature bending test, impact toughness test, semicircular bending test and four-point bending fatigue test were selected to test, analyze and compare the crack resistance of cold recycled mixture of the high viscosity SBS modified emulsified asphalt and the conventional SBS modified emulsified asphalt. The performance of each test result is consistent. In contrast to the conventional SBS modified emulsified asphalt, the cold recycled mixture of the high viscosity SBS modified emulsified asphalt shows better toughness and cracking resistance.
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2022, Vol. 36 
