Preparation and Properties of Waterborne Polyurethane and SBS Composite-Modified Emulsified Asphalt

被引:2
作者
Chen, Ruiqi [1 ]
Xu, Wen [1 ]
Chen, Yixing [1 ]
机构
[1] Wuhan Univ Technol, Sch Transportat & Logist Engn, Wuhan 430063, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 16期
关键词
modified emulsified asphalt; waterborne polyurethane; modifier; road performance; ACRYLIC ACID COPOLYMER; WARM-MIX ASPHALT; PERMANENT DEFORMATION; PARTICLE-SIZE; PERFORMANCE; BINDER; RESISTANCE; EMULSIONS; ADHESION; HOT;
D O I
10.3390/app14167288
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
To address the issue of insufficient durability of traditional modified emulsified asphalt in the application of cold mix and cold paving anti-skid wear layers, this study utilizes cationic waterborne polyurethane (PU+) for composite modification to enhance adhesion and performance across a range of temperatures. Initially, composite-modified emulsified asphalt samples were prepared with varying dosages of PU+ according to a gradient method. Routine performance tests were conducted on the evaporated residues for analysis. Advanced rheological tests, including temperature sweep (TS), frequency sweep (FS), linear amplitude sweep (LAS), and multi-stress creep recovery (MSCR) tests, were performed using a dynamic shear rheometer (DSR). Surface free energy (SFE) tests were conducted with a fully automated surface tension meter (STM). A comprehensive evaluation of the high-temperature rheological properties, fatigue properties, adhesion properties, and water damage resistance of the modified emulsified asphalt residues was carried out. Chemical changes before and after modification were characterized using Fourier transform infrared spectroscopy (FTIR), and the distribution of polymers in the evaporated residue was observed using fluorescence microscopy (FM). The results demonstrated that cationic waterborne polyurethane significantly enhanced the fatigue and adhesion properties of SBS-modified emulsified asphalt, but it also weakened the water damage resistance of asphalt. MSCR tests revealed that the addition of cationic waterborne polyurethane might reduce the elastic recovery performance of modified asphalt, thereby weakening its resistance to rutting. Among the samples, the modified asphalt with a PU+ content of 6% exhibited good high-temperature shear resistance and elastic recovery performance, demonstrating the best anti-rutting performance.
引用
收藏
页数:25
相关论文
共 35 条
[21]   Reactive compatibilization of PA6/LDPE blends with an ethylene-acrylic acid copolymer and a low molar mass bis-oxazoline [J].
Scaffaro, R ;
La Mantia, FP ;
Canfora, L ;
Polacco, G ;
Filippi, S ;
Magagnini, P .
POLYMER, 2003, 44 (22) :6951-6957
[23]   Preparation, properties and modification mechanism of polyurethane modified emulsified asphalt [J].
Sheng, Xiaohui ;
Wang, Mo ;
Xu, Tao ;
Chen, Jun .
CONSTRUCTION AND BUILDING MATERIALS, 2018, 189 :375-383
[24]   Evaluating Performance of PPA-and-Elvaloy-Modified Binder Containing WMA Additives and Lime Using MSCR and LAS Tests [J].
Singh, Dharamveer ;
Ashish, Prabin Kumar ;
Kataware, Aniket ;
Habal, Ayyanna .
JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2017, 29 (08)
[25]   Investigating impacts of warm-mix asphalt technologies and high reclaimed asphalt pavement binder content on rutting and fatigue performance of asphalt binder through MSCR and LAS tests [J].
Sun, Yiren ;
Wang, Weiying ;
Chen, Jingyun .
JOURNAL OF CLEANER PRODUCTION, 2019, 219 :879-893
[26]   Study of water-in-oil thin liquid films: Implications for the stability of petroleum emulsions [J].
Tchoukov, Plamen ;
Czarnecki, Jan ;
Dabros, Tadeusz .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2010, 372 (1-3) :15-21
[27]  
Transportation Research Board and National Academies of Sciences Engineering and Medicine, 2007, Final Report for NCHRP RRD 316: Using Surface Energy Measurements to Select Materials for Asphalt Pavement, DOI [10.17226/22001, DOI 10.17226/22001]
[28]   Applications of epoxy materials in pavement engineering [J].
Xiang, Qian ;
Xiao, Feipeng .
CONSTRUCTION AND BUILDING MATERIALS, 2020, 235
[29]   Rheological properties and anti-aging performance of asphalt binder modified with wood lignin [J].
Xu, Guangji ;
Wang, Hao ;
Zhu, Hongzhou .
CONSTRUCTION AND BUILDING MATERIALS, 2017, 151 :801-808
[30]   Chemical, morphological and rheological investigations of SBR/SBS modified asphalt emulsions with waterborne acrylate and polyurethane [J].
Xu, Ling ;
Li, Xianrui ;
Zong, Qidi ;
Xiao, Feipeng .
CONSTRUCTION AND BUILDING MATERIALS, 2021, 272 (272)