[1]孙吉书,李文霞*,王鹏飞,等.纳米有机膨润土/丁苯橡胶复合改性沥青的制备及性能[J].合成橡胶工业,2022,2:139-143.
　SUN Ji-shu,LI Wen-xia,WANG Peng-fei,et al.Preparation and properties of nano-organic bentonite/styrene-butadiene rubber composite modified asphalt[J].China synthetic rubber industy,2022,2:139-143.

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纳米有机膨润土/丁苯橡胶复合改性沥青的制备及性能(PDF)

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:

2022年2期

页码:

139-143

栏目:

出版日期:

2022-03-15

文章信息/Info

Title:

Preparation and properties of nano-organic bentonite/styrene-butadiene rubber composite modified asphalt

作者:

孙吉书1; 李文霞1*; 王鹏飞2; 李宁利1

1. 河北工业大学 土木与交通学院， 天津 300401； 2. 中铁十四局集团 第二工程有限公司， 山东 泰安 271000

Author(s):

SUN Ji-shu1;  LI Wen-xia1;  WANG Peng-fei2;  LI Ning-li1

1. School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin 300401, China; 2. The 2nd Engineering Co Ltd, China Railway 14th Bureau Group, Taian 271000, China

关键词:

纳米有机膨润土; 丁苯橡胶; 复合改性沥青; 储存稳定性; 流变性能; 相容性

Keywords:

nano organic bentonite;  styrene-butadiene rubber;  composite modified asphalt;  storage stability;  rheological property;  compatibility

分类号:

TQ 333.1

DOI:

DOI:10.19908/j.cnki.ISSN1000-1255.2022.02.0139

文献标识码:

B

摘要:

以纳米有机膨润土和丁苯橡胶（SBR）制备复合改性沥青，并考察了复合改性沥青的针入度、软化点、延度、储存稳定性及流变性能，同时对比了液体SBR和粉末SBR对复合改性沥青性能的影响。结果表明，复合改性沥青中，纳米有机膨润土的最佳质量分数为4%。随着SBR用量的增加，沥青的针入度降低，软化点升高，延度先增大后减小。粉末SBR对于沥青性能的改善作用更好。在质量分数为4%的纳米有机膨润土改性沥青中添加质量分数为6%的粉末SBR，布氏旋转黏度增加至基质沥青的2倍左右，老化指数降低约50%，不同温度下沥青的高温抗车辙性能及低温抗裂性能均得到提高，且纳米有机膨润土、粉末SBR与沥青具有较好的相容性。

Abstract:

The composite modified asphalt was prepared with nano-organic bentonite and styrene-butadiene rubber (SBR), and the penetration, sof-tening point, ductility, storage stability and rheological properties of the composite modified asphalt were investigated. At the same time, the influence of li-quid SBR and powder SBR on the performance of composite modified asphalt was discussed. The results showed that in the composite modified asphalt, the best mass fraction of nano-organic bentonite was 4%. As the amount of SBR increased, the penetration of asphalt decreased, the softening point increased, and the ductility first increased and then decreased. Powder SBR had a better effect on improving the performance of asphalt. Powder SBR with mass fraction of 6% was added to the nano-organic bentonite modified asphalt with a mass fraction of 4%, the Brookfield rotational viscosity increased to about twice of the matrix asphalt, and the aging index decreased by about 50%. The high temperature rutting resistance and low temperature cracking resistance of asphalt were improved at different temperatures, and the nano-organic bentonite and powder SBR had good compatibility with asphalt.

参考文献/References

［1］ 谭彦卿，金娇，郑健龙，等. 有机改性膨润土制备及其用于改性沥青的研究进展［J］. 硅酸盐通报，2017，36（8）：2636-2641.

备注/Memo

备注/Memo:

天津市交通运输委员会科技计划项目（2021-23）；天津市自然科学基金资助项目（18 JCTPJC 54200）。

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