Spiral cracking pattern in asphalt materials

被引：13

作者：

Behnia, Behzad ^{[1
]}

Buttlar, William G. ^{[2
]}

Reis, Henrique ^{[3
]}

机构：

[1] Western New England Univ, Dept Civil & Environm Engn, Springfield, MA 01119 USA

[2] Univ Missouri, Dept Civil & Environm Engn, Columbia, MO USA

[3] Univ Illinois, Dept Ind & Enterprise Syst Engn, Urbana, IL 61801 USA

来源：

MATERIALS & DESIGN | 2017年 / 116卷

关键词：

Asphalt materials; Spiral cracking pattern; Acoustic emission test; Compact tension test; Embrittlement temperature; Spiral tightness parameter; TEMPERATURE; FILMS;

D O I：

10.1016/j.matdes.2016.11.077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work for the first time reports observations and modeling to characterize three-dimensional spiral shaped fracture patterns in a bi-axially stressed layer of asphalt material bonded to an aluminum substrate. Five different asphalt materials with different fracture characteristics are investigated. A logarithmic spiral model was found to mathematically represent the 3D helix-shaped cracks observed. A spiral tightness parameter is proposed for the characterization of spiral fracture patterns in asphalt. Results of acoustic emission and compact tension tests are also presented and employed in the evaluation of observed spiral cracks. The shape of spirals are found to be influenced by the fracture properties of the asphalt materials tested and appear to be independent of the thickness and shape of the test sample. The embrittlement temperature and fracture energy of tested asphalt materials were found to correspond to the characteristic parameters of spiral cracks. Published by Elsevier Ltd.

引用

页码：609 / 615

页数：7

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