Comparison on properties of modified asphalt blended with DCLR and TLA
-
摘要: 以SK-90沥青为基质沥青,分别加入相同掺量(与沥青质量比为5%、10%、15%和20%)的DCLR和TLA,利用SHRP PG、针入度分级体系、红外光谱仪和凝胶色谱仪对比分析DCLR和TLA共混改性沥青的宏观性能和微观结构的变化。结果表明,DCLR和TLA的加入均可以改善沥青的高温性能,但对沥青的低温性能和疲劳性能产生一定的不利影响。同时,根据DCLR和TLA共混改性沥青的官能团和分子量分布的变化可以判断DCLR和TLA对沥青的改性作用主要为物理改性,在某种程度上,DCLR不能完全替代TLA。
-
关键词:
- DCLR共混改性沥青 /
- TLA改性沥青 /
- 宏观性能 /
- 微观结构 /
- 可行性
Abstract: The DCLR and TLA content are 5%, 10%, 15% and 20% by mass of SK-90 base asphalt respectively. The properties and microstructures of DCLR and TLA blending modified asphalts are tested by SHRP PG, penetration system, infrared spectrometer and gel permeation chromatograph. It indicates that adding DCLR and TLA can improve the high-temperature properties of asphalts, but the low-temperature and fatigue resistance of asphalts are declined. Based on the functional group and molecular weight distribution of asphalts, it predicts that the physical modification be happened in the DCLR and TLA blending modified asphalt. Meanwhile, the DCLR cannot replace TLA totally. -
郑丽珍. 澄合 10# 高硫煤直接液化性能及其残渣改性基质沥青研究[D]. 西安: 西安科技大学, 2012. (ZHENG Li-zhen. Study on the liquefaction property of 10# chenghe high sulfur coal and preparation of modified asphalt from chenghe coal liquefaction residue[D]. Xi'an: Xi'an University of Science and Technology, 2012.) 吴春来, 谢克昌. 煤炭直接液化[M]. 北京: 化学工业出版社, 2010. (WU Chun-lai, XIE Ke-chang. Direct coal lquefaction[M]. Beijing: Chemical Industry Press, 2010.) 张伟, 金俊杰, 俞虹, 田莉雅. 浅谈煤炭直接液化与我国的能源发展[J]. 洁净煤技术, 2001, 7(3): 31-35. (ZHANG Wei, JIN Jun-jie, YU Hong, TIAN Li-yan. Discussion on the direct coal liquefaction and china's energy development[J]. Clean Coal Technol, 2001, 7(3): 31-35.) 谷小会. 煤直接液化残渣的性质及利用现状[J]. 洁净煤技术, 2012, 18(3): 24-31. (GU Xiao-hui. Properties and utilization of coal direct liquefaction residue[J]. Clean Coal Technol, 2012, 18(3): 24-31.) 王寨霞, 杨建丽, 刘振宇. 煤直接液化残渣对道路沥青改性作用的初步评价[J]. 燃料化学学报, 2007, 35(1): 109-112. (WANG Zhai-xia, YANG Jian-li, LIU Zhen-yu. Preliminary evaluation of direct coal liquefaction residue modification effect on road asphalt[J]. J Fuel Chem Technol, 2007, 35(1): 109-112.) 朱伟平. 煤直接液化残渣改性沥青的研究[J]. 神华科技, 2009, 7(6): 68-85. (ZHU Wei-ping. Research on properties of direct coal liquefaction residue modified asphalt[J]. Shenhua Technol, 2009, 7(6): 68-85.) 何亮. 煤液化残渣复合改性沥青制备及其性能研究[D]. 西安: 长安大学硕士学位论文, 2013. (HE Liang. Research on preparation and properties of direct coal liquefaction residue modified asphalt[D]. Xi'an: Chang'an University, 2013.) 张艳荣. 液化残渣改性道路石油沥青的探索研究[D]. 西安: 西北大学硕士学位论文, 2010. (ZHANG Yan-rong. Exploratory study on direct coal liquefaction residue modified asphalt[D]. Xi'an: Northwest University, 2010.) JTG E20-2011, 公路工程沥青及沥青混合料试验规程[S]. (JTG E20-2011, Standard test methods of bitumen and bituminous mixtures for highway engineering[S].) JTG F40-2004, 公路沥青路面施工规范[S]. (JTG F40-2004, Technical specification for construction of highway asphalt pavements[S].) 胡皆汉. 实用红外光谱学[M]. 北京: 科学出版社, 2011. (HU Jie-han. The utility of IR spectroscopy[M]. Beijing: Science Press, 2011.) 刘国诠, 余兆楼. 色谱柱技术[M]. 北京: 化学工业出版社, 2001. (LIU Guo-quan, YU Zhao-lou. Chromatographic column technology[M]. Beijing: ChemicalIndustry Press, 2001.) 金日光, 华幼卿. 高分子物理[M]. (3版). 北京: 化学工业出版社, 2007. (JIN Ri-guang, HUA You-qing. Polymer physics[M]. 3rd ed. Beijing: Chemical Industry Press, 2007.)
点击查看大图
计量
- 文章访问数: 292
- HTML全文浏览量: 31
- PDF下载量: 327
- 被引次数: 0