Influence of sodium and organo-montmorillonites on the properties of bitumen

被引：65

作者：

Liu, Gang ^{[1
,2
]}

Wu, Shaopeng ^{[2
]}

van de Ven, Martin ^{[1
]}

Yu, Jianying ^{[2
]}

Molenaar, Andre ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Civil Engn & Geo Sci, NL-2600 GA Delft, Netherlands

[2] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

APPLIED CLAY SCIENCE | 2010年 / 49卷 / 1-2期

关键词：

Montmorillonite; Bitumen; Rheology; Ageing;

D O I：

10.1016/j.clay.2010.04.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper investigated the influence of sodium and organo-montmorillonites on the properties of bitumen. The organo-montmorillonite (OTAC(+) Mt) was obtained by reacting the sodium montmorillonite (Na+ Mt) with octadecyl trimethylammonium chloride. Bitumen binder samples with a content of 4 mass% of montmorillonite were prepared in a laboratory high-shear mixer. The rheological behaviour and ageing properties of the bitumens were investigated with a dynamic shear rheometer. The dispersion state of montmorillonite in bitumen was determined by X-ray diffraction and CT scanning. The two montmorillonites behaved differently in the bitumen. The intercalated structure of OTAC(+) Mt was observed in the bitumen. However, the Na+ Mt existed as particles at micrometer scale. Contrary to Na+ Mt, OTAC(+) Mt significantly influenced the rheological behaviour and the ageing properties of bitumen, due to the good compatibility between the organo-montrnorillonite and the bitumen used in this study. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.

引用

页码：69 / 73

页数：5

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