生物柴油和废塑料的再利用对环境保护具有重要意义。为了研究生物柴油-塑料裂解蜡复合改性剂对沥青性能的影响,采用三大指标、动态剪切流变(DSR)、多应力蠕变(MSCR)和布氏旋转黏度(RV)实验,通过针入度、软化点、延度、车辙因子、弹性恢复率、不可恢复蠕变柔量和黏度等指标,评价不同配比和掺量的生物柴油和塑料裂解蜡对沥青的改性效果。结果表明,掺入生物柴油后,沥青的软化点和恢复率减小,高温性能下降。塑料裂解蜡改性后,沥青的车辙因子增大,高温性能得到提升。合适掺量的生物柴油-塑料裂解蜡复合改性沥青满足温拌标准,具有良好的高温性能。根据实验结果,掺加1.5%生物柴油+5.0%塑料裂解蜡复合改性沥青综合性能相对最佳。
The reuse of biodiesel and waste plastics is of great significance to environmental protection.In order to study the effects of the biodiesel-plastic cracking wax compound modifier on the properties of asphalt,the three major indexes,dynamic shear rheological (DSR),more stress creep (MSCR) and brinell rotary viscosity (RV) test,were used.Through the penetration,softening point,ductility,rutting factor,elastic recovery rate,irrecoverable creep compliance,and viscosity etc.indexes,the effects of different proportion and content of biodiesel to plastic cracking wax on asphalt modification were evaluated.The results shown that the softening point and recovery rate of asphalt decreased and the high temperature performance decreased with the addition of biodiesel.After compound modification of plastic cracking wax,asphalt rutting factor increased and high temperature performance was improved.The biodiesel-plastic cracking wax compound modified asphalt with appropriate content met the standard of warm mixing,and had good high temperature performance.According to the test results,the composite modified asphalt with a content of 1.5% biodiesel and 5% plastic cracking wax had the best comprehensive performance.
[1] Jambeck J R,Geyer R,Wilcox C,et al.Plastic waste inputs from land into the ocean[J].Science,2015,347(6223):768-771.
[2] Almeida-Costa A,Benta A.Economic and environmental impact study of warm mix asphalt compared to hot mix asphalt[J].Journal of Cleaner Production,2016,112(Part 4):2308-2317.
[3] 王春,郝培文,张庆,等.温拌沥青混合料环境与经济效益分析[J].环境工程,2012(s2):452-455.
[4] 袁滨,李晓林,樊杰,等.新型橡胶沥青及沥青温拌剂的开发与研究[J].中外公路,2012,32(2):229-233.
[5] 周天澍,裴建中,李蕊,等.ODA/SM/MAH三元共聚物降黏剂的制备和性能[J].化工进展,2015,34(12):4315-4319.
[6] 孙忠武,林璐,李晓林,等.新型胶粉改性沥青降黏剂的研究[J].化工新型材料,2015(3):21-24.
[7] 廖国胜,赵鹏飞,杨海波,等.新型温拌沥青改性剂制备与性能研究[J].化工新型材料,2017(3):231-233.
[8] 佟禹,郭朝阳,李振,等.一种常温沥青及沥青混合料性能研究[J].中外公路,2018,38(1):302-305.
[9] Portugal A C X,Lucena L C F L,Lucena A E F L,et al.Rheological properties of asphalt binders prepared with maize oil[J].Construction and Building Materials,2017,152:1015-1026.
[10] Sun Z,Yi J,Huang Y,et al.Properties of asphalt binder modified by bio-oil derived from waste cooking oil[J].Construction and Building Materials,2016,102:496-504.
[11] Wen H,Bhusal S,Wen B.Laboratory evaluation of waste cooking oil-based bioasphalt as an alternative binder for hot mix asphalt[J].Journal of Materials in Civil Engineering,2013,25(10):1432-1437.
[12] Maharaj R,Ramjattan-Harry V,Mohamed N.Rutting and fatigue cracking resistance of waste cooking oil modified trinidad asphaltic materials[J].The Scientific World Journal,2015,2015:1-7.
[13] Fini E H,Al-Qadi I L,You Z,et al.Partial replacement of asphalt binder with bio-binder:characterisation and modification[J].International Journal of Pavement Engineering,2011,13(6):1-8.
[14] Peralta J,Williams R C,Rover M,et al.Development of a rubber-modified fractionated bio-oil for use as noncrude petroleum binder in flexible pavements[C].Transport Research Circular E-C165:Alternative Binders for Sustainable Asphalt Pavements.Washington D.C:Transport Research Board,2012:23-36.
[15] Zargar M,Ahmadinia E,Asli H,et al.Investigation of the possibility of using waste cooking oil as a rejuvenating agent for aged bitumen[J].Journal of Hazardous Materials,2012,233:254-258.
[16] Zeng M,Pan H,Zhao Y.et al.Evaluation of asphalt binder containing castor oil-based bioasphalt using conventional tests[J].Construction and Building Materials,2016,126:537-543.
[17] Chen M,Leng B,Wu S,et al.Physical,chemical and rheological properties of waste edible vegetable oil rejuvenated asphalt binders[J].Construction and Building Materials,2014,66:286-298.
[18] 杨锡武,方宇亮,刘克.裂化生活废旧塑料与SBS改性沥青及其混合料性能对比[J].重庆交通大学学报(自然科学版),2017,36(3):42-47.
[19] Costa L M B,Silva H M R D,Peralta J,et al.Using waste polymers as a reliable alternative for asphalt binder modification-Performance and morphological assessment[J].Construction and Building Materials,2019,198:237-244.
[20] Behnood A,Gharehveran M M.Morphology,rheology,and physical properties of polymer-modified asphalt binders[J].European Polymer Journal,2019,112:766-791.
