Influence of the geometrical and physical properties of filler in the filler-bitumen interaction

被引：90
|
作者：
Antunes, V. [1 ]
Freire, A. C. [2 ]
Quaresma, L. [1 ]
Micaelo, R. [1 ]
机构：
[1] Univ Nova Lisboa, Fac Sci & Technol, FCT UNL, P-2829516 Caparica, Portugal
[2] LNEC Natl Lab Civil Engn, P-1700066 Lisbon, Portugal
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 76卷
关键词：
Bituminous mastic; Filler; Hydrated lime; Portland cement; Physical testing; SEM imaging; Filler-bitumen interaction;
D O I：
10.1016/j.conbuildmat.2014.12.008
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The objective of this laboratory study is to investigate the relationship between the geometrical and physical properties of filler and the consistency of filler-bitumen mixtures and the stripping resistance. Five fillers (3 manufactured and 2 natural) were geometrically and physically characterized with various test methods, including SEM imaging. The filler-bitumen interaction was assessed with two consistency-related mastic tests and a water susceptibility test. SEM images show significant differences in size, shape and surface texture between tested fillers, and a strong correlation with the stiffening effect. It is proposed the inclusion of the f/b(max) ratio, obtained from the absorbing capacity test, in the filler specifications to serve as an indicative threshold value of the filler content added. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：322 / 329
页数：8
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