Preparation and properties of modified asphalt using branch SBS/nanoclay nanocomposite as a modifier

被引：33

作者：

Daniel Martinez-Anzures, Jesus ^{[1
]}

Zapien-Castillo, Samuel ^{[1
]}

Adriana Salazar-Cruz, Beatriz ^{[1
]}

Luis Rivera-Armenta, Jose ^{[1
]}

del Carmen Antonio-Cruz, Rocio ^{[2
]}

Hernandez-Zamora, Gabriel ^{[3
]}

Leonor Mendez-Hernandez, Maria ^{[1
]}

机构：

[1] Inst Tecnol Ciudad Madero, Ctr Invest Petroquim Secundaria, Altamira, Tamaulipas, Mexico

[2] Inst Tecnol Villahermosa, Villahermosa, Tabasco, Mexico

[3] Dynasol Elastomers SA CV, Altamira, Tamaulipas, Mexico

来源：

ROAD MATERIALS AND PAVEMENT DESIGN | 2019年 / 20卷 / 06期

关键词：

rheological properties; branch SBS; master curves; nanocomposite; RHEOLOGICAL PROPERTIES; PHYSICAL MIXTURES; CLAY COMPOUND; LINEAR SBS; NANOCLAY;

D O I：

10.1080/14680629.2018.1441062

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The use of Closite 15A and a triblock copolymer branch type (BP) as asphalt modifiers was studied. Modified asphalt binder was prepared by adding nanocomposites (NCs) of styrene-butadiene-styrene copolymer (BP) and Cloisite 15 A (NCMM). The NCs were obtained by means of a melt mixing technique. The morphology of the modified asphalt blends was observed via fluorescence microscopy, which revealed a good dispersion pattern of NCMM into the asphalt binder, and explains to a considerable extent, their final rheological behaviour. The modified asphalts exhibited a relatively high complex modulus compared to the unmodified asphalt and, as a consequence displayed enhanced viscoelastic properties. NCMM increased slightly both the softening point and the viscosity of the modified asphalts at elevated temperatures, and had a compatibilising effect on them, which was shown as an improvement of their storage stability.

引用

页码：1275 / 1290

页数：16

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