聚氨酯预聚物改性沥青的制备及其流变行为
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摘要
为了赋予基质沥青良好的物化性能,增强其在不同环境条件下的适应性,采用聚氨酯预聚物对基质沥青进行改性。基于选择的原材料,首先采用正交试验和直观分析法确定了聚氨酯预聚物改性沥青的最佳制备工艺参数,在此基础上,通过分析聚氨酯预聚物掺量对改性沥青3大指标、韧性、存储稳定性和粘度指标的影响,确定了聚氨酯预聚物改性剂的最佳掺量。其次,借助动态剪切流变试验(DSR)和弯曲梁流变试验(BBR),对比分析了聚氨酯预聚物改性沥青、SBS改性沥青、SBR改性沥青和基质沥青的流变行为。试验结果表明,聚氨酯预聚物改性沥青的最佳制备工艺参数为单位制备量400 g、剪切速率4 000 r/min、剪切温度150℃和剪切时间40 min;综合考虑改性沥青3大指标、韧性、存储稳定性、粘度指标和经济性,推荐聚氨酯预聚物改性剂最佳掺量为6%;较其它3种沥青,聚氨酯预聚物改性沥青在52～82℃温度区间内具有最优的高温性能,但其对温度的敏感性最强。同时,聚氨酯预聚物改性沥青在交变应力作用下的弹性性能略低于弹性性能最优的SBS改性沥青。此外,聚氨酯预聚物改性沥青的低温流变性能略低于低温性能最优的SBR改性沥青。
In order to endow good physic-chemical properties to the matrix asphalt and enhance its adaptability under different environmental conditions, the matrix asphalt was modified with polyurethane pre-polymer. The optimal preparation parameters were firstly determined by orthogonal test and visual analysis based on the selected raw materials. On the basis, the optimum dosage of polyurethane pre-polymer modifier was determined by analyzing the influence of polyurethane pre-polymer content on the three major indexes, toughness, storage stability and viscosity index of modified asphalt. Secondly, the rheological behavior of polyurethane pre-polymer modifier asphalt, SBS modified asphalt, SBR modified asphalt and matrix asphalt was compared and analyzed by dynamic shear rheological test(DSR) and bending beam rheological test(BBR). The experimental results show that the optimum preparation parameters of polyurethane pre-polymer modified asphalt are unit preparation amount 400 g, shear rate 4 000 r/min, shear temperature 150 ℃ and shear time 40 min. Also, considering the three major indicators of modified asphalt, toughness, storage stability, viscosity index and economy, it is recommended that the optimum dosage of polyurethane pre-polymer modifier was 6%. Moreover, compared with other three kinds of asphalt, polyurethane pre-polymer modified asphalt had the best high temperature performance in the temperature range of 52-82 ℃, but it was of high temperature sensitivity. At the same time, the elastic property of polyurethane pre-polymer modified asphalt under alternating stress was slightly lower than that of SBS modified asphalt with the best elastic property. In addition, the low temperature rheological properties of polyurethane pre-polymer modified asphalt was slightly lower than that of SBR modified asphalt with the best low temperature performance.
In order to endow good physic-chemical properties to the matrix asphalt and enhance its adaptability under different environmental conditions, the matrix asphalt was modified with polyurethane pre-polymer. The optimal preparation parameters were firstly determined by orthogonal test and visual analysis based on the selected raw materials. On the basis, the optimum dosage of polyurethane pre-polymer modifier was determined by analyzing the influence of polyurethane pre-polymer content on the three major indexes, toughness, storage stability and viscosity index of modified asphalt. Secondly, the rheological behavior of polyurethane pre-polymer modifier asphalt, SBS modified asphalt, SBR modified asphalt and matrix asphalt was compared and analyzed by dynamic shear rheological test(DSR) and bending beam rheological test(BBR). The experimental results show that the optimum preparation parameters of polyurethane pre-polymer modified asphalt are unit preparation amount 400 g, shear rate 4 000 r/min, shear temperature 150 ℃ and shear time 40 min. Also, considering the three major indicators of modified asphalt, toughness, storage stability, viscosity index and economy, it is recommended that the optimum dosage of polyurethane pre-polymer modifier was 6%. Moreover, compared with other three kinds of asphalt, polyurethane pre-polymer modified asphalt had the best high temperature performance in the temperature range of 52-82 ℃, but it was of high temperature sensitivity. At the same time, the elastic property of polyurethane pre-polymer modified asphalt under alternating stress was slightly lower than that of SBS modified asphalt with the best elastic property. In addition, the low temperature rheological properties of polyurethane pre-polymer modified asphalt was slightly lower than that of SBR modified asphalt with the best low temperature performance.
引文
[1] Guo Gencai,Xia Lei,Zhang Hongbao.Study on performance of polyurethane modified asphalt mixture[J].Journal of Highway and Transportation Research and Development,2018,35(12):1-6(in Chinese).郭根才,夏磊,张宏宝.聚氨酯改性沥青混合料路用性能研究[J].公路交通科技,2018,35(12):1-6.
[2] Ding Peng,Ji Zezhong,Xu Bo,et al.Study on properties of warm mix finished high viscosity asphalt and mixtures[J].Journal of Chongqing University of Technology (Natural Science),2018(4):127-134(in Chinese).丁鹏,吉泽中,徐波,等.温拌成品高黏沥青及其混合料性能研究[J].重庆理工大学学报(自然科学),2018(4):127-134.
[3] Hou H B,Wang T,Wu S P,et al.Investigation on the pavement performance of asphalt mixture based on predicted dynamic modulus[J].Construction and Building Materials,2016,106:11-17.
[4] Buttlar W G,Hill B C,Wang H,et al.Performance space diagram for the evaluation of high- and low-temperature asphalt mixture performance[J].Road Materials and Pavement Design,2017,18(sup1):336-358.
[5] Elkashef M,Podolsky J,William R C,et al.Preliminary examination of soybean oil derived material as a potential rejuvenator through Superpave criteria and asphalt bitumen rheology[J].Construction and Building Materials,2017,149:826-836.
[6] Ling C,Arshadi A,Bahia H.Importance of binder modification type and aggregate structure on rutting resistance of asphalt mixtures using image-based multi-scale modeling[J].Road Materials and Pavement Design,2017,18(04):785-799.
[7] Ma Xiaoyan,Chen Huaxin,Zhang Xingyu,et al.An analysis is over the correlation between low temperature rheological properties of SBS-modified asphalt and raw materials performance parameters[J].Materials Review,2018,32(22):3885-3890(in Chinese).马晓燕,陈华鑫,张星宇,等.SBS改性沥青低温流变性与原材料性能相关性研究[J].材料导报,2018,32(22):3885-3890.
[8] Zeng Lihao,Wei Jianguo,Hou Jiannan,et al.Development and evaluation of polyurethane modified asphalt[J].Journal of Changsha University of Science and Technology(Natural Science),2017,14(4):24-29(in Chinese).曾俐豪,魏建国,侯剑楠,等.聚氨酯改性沥青的开发与性能评价[J].长沙理工大学学报(自然科学版),2017,14(4):24-29.
[9] Wang Bo,Wen Yong,Liu Xudong,et al.Study on the effect of different composition of polyurethane on the performance of road repair materials[J].Thermosetting Resin,2018,33(6):43-46(in Chinese).王渤,温勇,刘旭东,等.聚氨酯不同组成对道路修补材料性能影响研究[J].热固性树脂,2018,33(6):43-46.
[10] Liu Ying,Xin Xing.Study on performance of polyurethane modified asphalt for pavement[J].Petroleum asphalt,2015,29(1):48-53(in Chinese).刘颖,辛星.道路用聚氨酯改性沥青的性能研究[J].石油沥青,2015,29(1):48-53.
[11] Rabindra K P,Anurag A G.Preparation and evaluation of waste PET derived polyurethane polymer modified bitumen through in situ polymerization reaction[J].Construction and Building Materials,2018,158:337-345.
[12] Behrokh B,Mohammad T,Amir B.Influence of thermoplastic polyurethane and synthesized polyurethane additive in performance of asphalt pavements[J].Construction and Building Materials,2018,166:1-11.
[13] Ban Xiaoyi.Study on preparation and properties of polyurethane (PU) modified asphalt[D].Xi’an:Chang’an University,2017(in Chinese).班孝义.聚氨酯(PU)改性沥青的制备与性能研究[D].西安:长安大学,2017.
[14] Qi Bing.Research on properties of polyurethane (PU) modified asphalt and mixture for deck pavement[D].Xi’an:Chang’an University,2018(in Chinese).祁冰.适用于桥面铺装的聚氨酯(PU)改性沥青及混合料性能研究[D].西安:长安大学,2018.
[15] Liu Ying,Xin Xing.Study on preparation technology of polyurethane modified asphalt for pavement[J].Journal of China & Foreign Highway,2015,35(5):255-259(in Chinese).刘颖,辛星.道路用聚氨酯改性沥青的制备工艺研究[J].中外公路,2015,35(5):255-259.
[16] Yan Kezhen,Hu Yue,Wang Zengguang,et al.Research on modified asphalt by waste tire rubber powder and reclaimed low density polyethylene composite[J].Journal of Building Materials,2017,20(1):145-149(in Chinese).颜可珍,胡玥,王曾光,等.废胶粉及再生低密度聚乙烯复合改性沥青性能研究[J].建筑材料学报,2017,20(1):145-149.
[17] Qi Wenyang,Li Lihan,Wang Yukai.Evaluation index of aging property of SBS modified asphalt based on force-ductility test[J].Journal of Building Materials,2014,17(3):543-547(in Chinese).祈文洋,李立寒,汪于凯.基于测力延度试验的SBS改性沥青老化特征评价指标[J].建筑材料学报,2014,17(3):543-547.
[18] Liu Cheng,Xu Meng,Quan Dong,et al.Evaluation of aging characteristics of SBS modified asphalt based on force-ductility test[J].Journal of China & Foreign Highway,2017,37(5):263-267.刘成,徐萌,权栋,等.基于测力延度试验评价SBS改性沥青的老化特征[J].中外公路,2017,37(5):263-267.
[19] Zhou Yan,Zhang Kai,Chen Shuanfa,et al.Research on force ductility test of modified asphalt[J].Journal of Chang’an University(Natural Science Edition),2012,32(3):30-33.周燕,张凯,陈拴发,等.改性沥青测力延度试验[J].长安大学学报(自然科学版),2012,32(3):30-33.
[2] Ding Peng,Ji Zezhong,Xu Bo,et al.Study on properties of warm mix finished high viscosity asphalt and mixtures[J].Journal of Chongqing University of Technology (Natural Science),2018(4):127-134(in Chinese).丁鹏,吉泽中,徐波,等.温拌成品高黏沥青及其混合料性能研究[J].重庆理工大学学报(自然科学),2018(4):127-134.
[3] Hou H B,Wang T,Wu S P,et al.Investigation on the pavement performance of asphalt mixture based on predicted dynamic modulus[J].Construction and Building Materials,2016,106:11-17.
[4] Buttlar W G,Hill B C,Wang H,et al.Performance space diagram for the evaluation of high- and low-temperature asphalt mixture performance[J].Road Materials and Pavement Design,2017,18(sup1):336-358.
[5] Elkashef M,Podolsky J,William R C,et al.Preliminary examination of soybean oil derived material as a potential rejuvenator through Superpave criteria and asphalt bitumen rheology[J].Construction and Building Materials,2017,149:826-836.
[6] Ling C,Arshadi A,Bahia H.Importance of binder modification type and aggregate structure on rutting resistance of asphalt mixtures using image-based multi-scale modeling[J].Road Materials and Pavement Design,2017,18(04):785-799.
[7] Ma Xiaoyan,Chen Huaxin,Zhang Xingyu,et al.An analysis is over the correlation between low temperature rheological properties of SBS-modified asphalt and raw materials performance parameters[J].Materials Review,2018,32(22):3885-3890(in Chinese).马晓燕,陈华鑫,张星宇,等.SBS改性沥青低温流变性与原材料性能相关性研究[J].材料导报,2018,32(22):3885-3890.
[8] Zeng Lihao,Wei Jianguo,Hou Jiannan,et al.Development and evaluation of polyurethane modified asphalt[J].Journal of Changsha University of Science and Technology(Natural Science),2017,14(4):24-29(in Chinese).曾俐豪,魏建国,侯剑楠,等.聚氨酯改性沥青的开发与性能评价[J].长沙理工大学学报(自然科学版),2017,14(4):24-29.
[9] Wang Bo,Wen Yong,Liu Xudong,et al.Study on the effect of different composition of polyurethane on the performance of road repair materials[J].Thermosetting Resin,2018,33(6):43-46(in Chinese).王渤,温勇,刘旭东,等.聚氨酯不同组成对道路修补材料性能影响研究[J].热固性树脂,2018,33(6):43-46.
[10] Liu Ying,Xin Xing.Study on performance of polyurethane modified asphalt for pavement[J].Petroleum asphalt,2015,29(1):48-53(in Chinese).刘颖,辛星.道路用聚氨酯改性沥青的性能研究[J].石油沥青,2015,29(1):48-53.
[11] Rabindra K P,Anurag A G.Preparation and evaluation of waste PET derived polyurethane polymer modified bitumen through in situ polymerization reaction[J].Construction and Building Materials,2018,158:337-345.
[12] Behrokh B,Mohammad T,Amir B.Influence of thermoplastic polyurethane and synthesized polyurethane additive in performance of asphalt pavements[J].Construction and Building Materials,2018,166:1-11.
[13] Ban Xiaoyi.Study on preparation and properties of polyurethane (PU) modified asphalt[D].Xi’an:Chang’an University,2017(in Chinese).班孝义.聚氨酯(PU)改性沥青的制备与性能研究[D].西安:长安大学,2017.
[14] Qi Bing.Research on properties of polyurethane (PU) modified asphalt and mixture for deck pavement[D].Xi’an:Chang’an University,2018(in Chinese).祁冰.适用于桥面铺装的聚氨酯(PU)改性沥青及混合料性能研究[D].西安:长安大学,2018.
[15] Liu Ying,Xin Xing.Study on preparation technology of polyurethane modified asphalt for pavement[J].Journal of China & Foreign Highway,2015,35(5):255-259(in Chinese).刘颖,辛星.道路用聚氨酯改性沥青的制备工艺研究[J].中外公路,2015,35(5):255-259.
[16] Yan Kezhen,Hu Yue,Wang Zengguang,et al.Research on modified asphalt by waste tire rubber powder and reclaimed low density polyethylene composite[J].Journal of Building Materials,2017,20(1):145-149(in Chinese).颜可珍,胡玥,王曾光,等.废胶粉及再生低密度聚乙烯复合改性沥青性能研究[J].建筑材料学报,2017,20(1):145-149.
[17] Qi Wenyang,Li Lihan,Wang Yukai.Evaluation index of aging property of SBS modified asphalt based on force-ductility test[J].Journal of Building Materials,2014,17(3):543-547(in Chinese).祈文洋,李立寒,汪于凯.基于测力延度试验的SBS改性沥青老化特征评价指标[J].建筑材料学报,2014,17(3):543-547.
[18] Liu Cheng,Xu Meng,Quan Dong,et al.Evaluation of aging characteristics of SBS modified asphalt based on force-ductility test[J].Journal of China & Foreign Highway,2017,37(5):263-267.刘成,徐萌,权栋,等.基于测力延度试验评价SBS改性沥青的老化特征[J].中外公路,2017,37(5):263-267.
[19] Zhou Yan,Zhang Kai,Chen Shuanfa,et al.Research on force ductility test of modified asphalt[J].Journal of Chang’an University(Natural Science Edition),2012,32(3):30-33.周燕,张凯,陈拴发,等.改性沥青测力延度试验[J].长安大学学报(自然科学版),2012,32(3):30-33.
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