摘要
为了确定煤直接液化残渣(direct coal liquefaction residue,DCLR)中四氢呋喃可溶物(tetrahydrofuran soluble,THFS)作为改性剂与沥青之间的制备工艺,运用正交试验和灰关联分析法优化设计TFHS改性沥青的制备工艺,并利用针入度分级和SHRP PG评价体系分析不同THFS添加量下(与基质沥青质量比4%、6%、8%、10%)改性沥青的性能.试验结果表明:利用正交试验和灰关联分析相结合的方法可优化设计THFS改性沥青的制备工艺,确定的最佳制备工艺为剪切温度150℃,剪切时间45 min,剪切速率4 000 r/min.同时,THFS的加入可以改善沥青的高温性能,但对沥青低温性能有一定的不利影响,综合THFS改性沥青的高低温性能,推荐THFS最佳添加量为6%.
To determine the preparation process for THFS （tetrahydrofuran soluble）which extracted from DCLR（direct coal liquefaction residue）and asphalt binder, the orthogonal test and grey relational degree analysis are applied to optimize the preparation process for THFS modified asphalt binder. The base asphalt is SK-90 and the THFS contents are 4% , 6% , 8% and 10% by mass of SK-90 asphalt binder. The properties of THFS modified asphalt binders are tested by SHRP PG and Penetration system. The test results indicate that orthogonal test combined with grey relational degree analysis can optimize the preparation process for THFS modified asphalt binder, and determine the optimum preparation process. The shear temperature is 150 ℃ , shear time is 45 min, and shear rate is 4 000 r/min. Meanwhile, the high-temperature properties of THFS modified asphalt binders are improved, but the low-temperature properties of THFS modified asphalt binders are declined. Considering the high-and-low temperature properties of THFS modified asphalt binders comprehensively, the 6% THFS content is recommended.
出处
《北京建筑大学学报》
2016年第3期55-60,共6页
Journal of Beijing University of Civil Engineering and Architecture
基金
国家自然科学基金项目(51478028)
关键词
煤直接液化残渣DCLR
四氢呋喃可溶物THFS
正交试验
灰关联分析
优化设计
性能评价
direct coal liquefaction residue
tetrahydrofuran soluble
orthogonal experiment
grey relation degree analysis
optimization design
performance evaluation
