•  
  •  
 

Abstract

To achieve accurate determination of rubber powder content in rubber asphalt, two new methods were proposed. The first method is to calculate the content of rubber powder by measuring the content of cobalt (Co) and stibium (Sb) in matrix asphalt, rubber powder, and rubber asphalt. The second method is to calculate the content of rubber powder by weighing the residue after burning rubber asphalt and its components. The two methods were used to determine the content of rubber powder of six kinds of rubber asphalt prepared in the laboratory and four kinds of rubber asphalt sampled in the factory, and the accuracy and reliability of the two methods were verified. The results show that it is accurate to calculate the content of rubber powder according to the content of Co and Sb in rubber asphalt. The accuracy of calculating the content of rubber powder in rubber asphalt directly by using the percentage of residue after combustion is low, but the modified prediction model of rubber powder in the combustion test has high accuracy. The research results can provide a reference for the production quality control of rubber asphalt and the rapid and accurate determination of rubber powder content in practical engineering.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.043

First Page

226

Last Page

230

Submission Date

May 2025

Reference

[1] ZHOU H P, HOLIKATTI S, VACURA P. Caltrans use of scrap tires in asphalt rubber products: a comprehensive review[J]. Journal of Traffic and Transportation Engineering (English Edition), 2014, 1(1): 39-48. [2] 丁文霞. 干湿复合橡胶添加对微表处材料的影响[J]. 中外公路, 2018, 38(6): 281-285. DING Wenxia. Effect of dry-wet composite rubber addition on micro-surfacing materials[J]. Journal of China & Foreign Highway, 2018, 38(6): 281-285. [3] 李廷. 橡胶粉预处理对橡胶沥青性能影响的研究进展[J]. 合成橡胶工业, 2019, 42(2): 159-164. LI Ting. Research progress of effect of crumb rubber pretreatment on rubber asphalt performance[J]. China Synthetic Rubber Industry, 2019, 42(2): 159-164. [4] LI B, SHEN J, XIE Z. Influence of trans-polyoctenamer on rheological properties of rubberised asphalt binders after short term aging procedures[J]. Materials Research Innovations, 2014, 18(sup5): S5-39-S5-41. [5] 尹继明, 肖鹏, 吕凡任. 胶粉改性沥青存储稳定性影响因素研究[J]. 中外公路, 2012, 32(2): 246-248. YIN Jiming, XIAO Peng, (LÜ/LV/LU/LYU) Fanren. Journal of China & Foreign Highway, 2012, 32(2): 246-248. [6] SHEN J N, AMIRKHANIAN S, XIAO F P, et al. Influence of surface area and size of crumb rubber on high temperature properties of crumb rubber modified binders[J]. Construction and Building Materials, 2009, 23(1): 304-310. [7] 徐鸥明, 张壮, 杨晨, 等. 胶粉掺量及存储时间对橡胶沥青技术性质的影响[J]. 中外公路, 2015, 35(5): 273-275. XU Ouming, ZHANG Zhuang, YANG Chen, et al. The influence of rubber powder content and storage time on the technical properties of rubber asphalt [J]. Journal of China & Foreign Highway, 2015, 35(5): 273-275. [8] 罗桑, 李想, 田佳昊, 等. 基于红外光谱分析的改性沥青SBS含量快速测定技术[J]. 长安大学学报(自然科学版), 2019, 39(3): 10-18. LUOSANG, LI Xiang, TIAN Jiahao, et al. Rapid detection of SBS content in modified asphalt based on infrared spectrum analysis[J]. Journal of Chang’an University (Natural Science Edition), 2019, 39(3): 10-18. [9] 李海莲, 李波, 王起才, 等. 基质沥青对废旧胶粉改性沥青流变性的影响机理研究[J]. 兰州交通大学学报, 2016, 35(6): 8-13. LI Hailian, LI Bo, WANG Qicai, et al. Influence mechanism of different virgin asphalt on rheological properties of crumb rubber modified asphalt[J]. Journal of Lanzhou Jiaotong University, 2016, 35(6): 8-13. [10] 吕文姝, 王金勤, 蔺习雄, 等. 不同基质沥青对橡胶沥青的性能影响[J]. 石油沥青, 2013, 27(1): 17-21. LV Wenshu, WANG Jinqin, LIN Xixiong, et al. Performance influence of different base asphalt on rubber asphalt[J]. Petroleum Asphalt, 2013, 27(1): 17-21.

Download

Share

COinS