Study on the Rheological Performance and Microscopic Mechanism of PPA/SBS/SBR Composite-Modified Asphalt Cold replenishment Liquid  
[PERSON]  
1 Xinjang Institute of Transportation Sciences Co., Ltd., Urumqi 830000, China; [EMAIL_ADDRESS] (Y.X. ); [EMAIL_ADDRESS] (L.M. ); [EMAIL_ADDRESS] (S.L. ); [EMAIL_ADDRESS] (Y.Z.) [PERSON]  
3 Key Laboratory of Highway Engineering Technology and Transportation Industry in Arid Desert Regions, Urumqi 830000, China3  
[PERSON]  
1 Xinjang Institute of Transportation Sciences Co., Ltd., Urumqi 830000, China; [EMAIL_ADDRESS] (Y.X. ); [EMAIL_ADDRESS] (L.M. ); [EMAIL_ADDRESS] (S.L. ); [EMAIL_ADDRESS] (Y.Z.) Xiaosong Liu  
3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China; [EMAIL_ADDRESS] (X.B. ); [EMAIL_ADDRESS] (XL.) Xiaosong Liu  
3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China; [EMAIL_ADDRESS] (X.B. ); [EMAIL_ADDRESS] (XL.) Xiaosong Liu  
3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China; [EMAIL_ADDRESS] (X.B. ); [EMAIL_ADDRESS] (XL.) Xiaosong Liu  
3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China; [EMAIL_ADDRESS] (X.B. ); [EMAIL_ADDRESS] (XL.) Xiaosong Liu  
3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China; [EMAIL_ADDRESS] (X.B. ); [EMAIL_ADDRESS] (XL.) Xiaosong Liu  
3 Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China; [EMAIL_ADDRESS] (X.B. ); 2021221259@chd. required during mixing, and a higher temperature is required during mixing and paving construction. When repair works are scattered and the defective area is small, the hot repair method is not economical and is greatly affected by environmental factors. This makes it unsuitable for construction in harsh environments such as low temperatures, rain, and snow [4; 5]. The cold patching method seals and stores a pre-prepared cold patching asphalt mixture (CPAM) in a bag, which can be used at ambient temperatures for all-weather pit repair. However, compared with HMA, the adhesion performance of CPAM is worse due to the sharp decline in the adhesion of the asphalt binder with a diluent. Under traffic loads and water damage, it shows low early strength, weak bearing capacity, and poor water stability, resulting in looseness, peeling, and other short-term defects [6; 7]. Compared with HMA, CPAM can be used in poor weather conditions, such as rain and snow, and is less affected by the external environment. It also has the advantages of simple construction and energy conservation. However, the performance of CPAM mainly depends on the performance index of modified asphalt. In addition, researchers are committed to researching CPAM composite-modified asphalt additives to improve the performance of CPAM [8; 9; 10; 11; 12]. For example, waterborne acrylate and polyurethane can improve the storage stability and high-temperature performance of SBS/SBR-modified asphalt. Adding various polymers and composite modifiers can also improve the high and low-temperature performance, water stability, and adhesion of CPAM. However, due to the different density, polarity, and molecular structure between polymers and asphalt, their compatibility is poor, and they easily separate when stored at high temperatures. In recent years, studies have shown that polyhydroxyalkanoites (PHAs), MoS2 quantum dots (MQDs), zinc sulfide (ZnS), and nanoparticles (NPs) are beneficial for improving the thermal stability and tensile strength of composite materials [13; 14; 15]. In contrast, the research on PPA modifiers has achieved significant results and applications. One study found that PPA-modified asphalt showed better high-temperature performance and storage stability than asphalt, but its low-temperature performance was poor.