[1]杨军,唐志赟,徐刚,等.外加剂对FTIR测定改性沥青SBS含量影响[J].长安大学学报(自然科学版),2020,40(3):1-10.
　YANG Jun,TANG Zhi yun,XU Gang,et al.Effect of external additives on determination of SBScontent in modified asphalt by FTIR[J].Journal of Chang’an University (Natural Science Edition),2020,40(3):1-10.
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外加剂对FTIR测定改性沥青SBS含量影响()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第40卷
期数:
2020年3期
页码:
1-10
栏目:
道路工程
出版日期:
2020-05-15

文章信息/Info

Title:
Effect of external additives on determination of SBScontent in modified asphalt by FTIR
作者:
杨军; 唐志赟; 徐刚; 陈先华; 龚晓静; 卢桂林
（东南大学 交通学院，江苏 南京 211189）
Author(s):
YANG Jun;  TANG Zhiyun;  XU Gang;  CHEN Xianhua;  GONG Xiaojing;  LU Guilin
（School of Transportation, Southeast University, Nanjing 211189, Jiangsu, China）
关键词:
道路工程; SBS改性沥青; 红外光谱; 外加剂; 正交试验
Keywords:
road engineering;  SBS modified asphalt;  infrared spectra;  additives;  orthogonal test
文献标志码:
A
摘要:
为了研究外加剂对傅里叶红外光谱法（FTIR）测定改性沥青中SBS含量（质量分数）检测精度的影响，采用Nicolet iS10红外光谱仪对基质沥青、SBS改性剂、SBS改性沥青、橡胶油和硫磺2种外加剂进行红外光谱扫描，并结合OMNIC软件读取各材料红外光谱图的特征峰面积，包括SBS在699、966 cm-1处与基质沥青在1 377 cm-1处的特征峰面积，建立SBS与基质沥青特征峰面积的比值A（分别记为A699和A966）与SBS含量关系的标准曲线。同时为了考虑硫磺掺量和橡胶油掺量对SBS含量检测的影响，设计了三因素三水平正交试验，用F检验对正交试验结果进行了方差分析，并依据标准曲线对正交试验结果进行反算求得SBS预测含量。研究结果表明：A值与SBS含量具备良好的正相关关系；外加剂对SBS含量检测精度影响较大，3种因素对SBS含量检测的影响程度不同，因素主次顺序依次为SBS含量、硫磺掺量和橡胶油掺量，且除了以A966为指标计算的橡胶油掺量因素F值小于F临界值外，其余因素对试验结果均有显著影响，硫磺的加入使A值减少，橡胶油的加入降低了A值的增幅；利用标准曲线对正交试验结果反算得到的SBS预测含量与实际含量之间的相对误差普遍超过10%，最大值甚至超过15%；外加剂对FTIR检测改性沥青SBS含量的影响不可忽略，实际工程中采用FTIR检测SBS含量时应考虑外加剂的影响。
Abstract:
In order to investigate the effect of additives on the accuracy of polymer content determination by Fourier transform infrared spectroscopy (FTIR), Nicolet iS10 infrared spectrometer was used to obtain the infrared spectra of matrix asphalt, SBS modifier, additives such as rubber oil and sulfur.Then, OMNIC software was used to measure the characteristic peak area of infrared spectra of each material, including the characteristic peak area of SBS at 699 and 966 cm-1 and the matrix asphalt at 1 377 cm-1. A standard curve of the relationship between the characteristic peak area ratios A (respectively labeled A699 and A966) and the SBS content was established. Orthogonal experiments were designed to consider the effects of three levels of SBS content, sulfur content and rubber oil content on the detection of SBS content. Variance analysis of orthogonal test results was carried out by Ftest, and the SBS prediction content was obtained by inverse calculation of the orthogonal test results based on the standard curve. The results show that A value has a good positive correlation with SBS content. Additives had a great influence on the accuracy of SBS content detection, and the influence of three factors on SBS content was different. It could be inferred that the main and secondary factors were SBS content, sulfur content and rubber oil content. Besides the factors of rubber oil content at 966 cm-1, other factors had significant influence on the test results. The addition of sulfur reduced the A value and the addition of rubber oil reduced the increase in A value. Furthermore, the relative error between actual SBS contents and predicted contents which could be obtained by inverse calculation of the orthogonal test results according to the standard curve were generally more than 10%, and the maximum values were even more than 15%. The research suggests that the effect of additives on the FTIR detection of modified asphalt SBS content cannot be ignored. In actual engineering, the influence of additives should be considered when we use the FTIR method to detect SBS content. 8 tabs, 9 figs, 25 refs.

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备注/Memo

备注/Memo:
杨军，唐志赟，徐刚，等.外加剂对FTIR测定改性沥青SBS含量影响［J］.长安大学学报：自然科学版,2020,40(3):1-10.
YANG Jun，TANG Zhiyun，XU Gang，et al.Effect of external additives on determination of SBS content in modified asphalt by FTIR［J］.Journal of Changan University：Natural Science Edition,2020,40(3):1-10.
更新日期/Last Update: 2020-06-03