Influence of bitumen and aggregate polarity on interfacial adhesion

被引：41

作者：

Baldi-Sevilla, Alejandra ^{[1
,2
]}

Montero, Mavis L. ^{[2
,3
]}

Aguiar-Moya, Jose P. ^{[1
]}

Loria-Salazar, Luis G. ^{[1
]}

Bhasin, Amit ^{[4
]}

机构：

[1] Univ Costa Rica, Natl Lab Mat & Struct Models LanammeUCR, San Pedro, Costa Rica

[2] Univ Costa Rica, Sch Chem, San Pedro, Costa Rica

[3] Univ Costa Rica, Sch Chem, Ctr Electrochem & Chem Energy CELEQ, San Pedro, Costa Rica

[4] Univ Texas Austin, Dept Civil Architectural & Environm Engn, Austin, TX 78712 USA

来源：

ROAD MATERIALS AND PAVEMENT DESIGN | 2017年 / 18卷

关键词：

water-resistant interfaces; durability; asphalt mixture; surface energy; MOISTURE DAMAGE; ASPHALT; ENERGY; DIATOMITE; BINDER;

D O I：

10.1080/14680629.2017.1304265

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The quality of the bitumen-aggregate interface formed in an asphalt mixture is dictated by the physicochemical properties of both materials, such as surface polarity. In order to better understand the role of polarity on interfacial adhesion between bitumen and aggregate, a systematic study was conducted by designing bitumens with different polarities. These bitumens were produced by the addition of diatoms and hydrophobic diatoms in varying concentrations. It was found that by manipulating the polarity of bitumen it is possible to design materials that result in bitumen-aggregate pairs that are more compatible with each other and resistant to debonding. On the other hand, basicity of aggregates is also highly related to obtaining asphalt mixtures with improved durability. The findings from this paper help advance the fundamental understanding of the adhesive behaviour between bitumens and aggregates. More importantly, these findings can be used to design optimal anti-strip agents for using in different asphalt mixtures.

引用

页码：304 / 317

页数：14

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