Evaluation of significant factors for aggregate retention in chip seals based on mesostructured finite element model
- Release time:2024-08-09
- Hits:
-
-
-
Affiliation of Author(s):
土木工程学院
-
-
Journal:
International Joutnal of Pavement Research and Technology
-
-
-
Key Words:
Chip seals; Aggregate retention; Analysis of variance; Aggregate-asphalt interface; Finite element
-
Abstract:
The retention of aggregates or chips on chip seal is critical for the durability of chip seal application in pavement maintenance. Most
evaluation on aggregate retention have focused on laboratory experiment regarding asphalt-aggregate bonding, however, there are many
other factors that are needed to be investigated as a whole picture. As such, this paper presents a mechanistic point view of understanding
the effects on the aggregate retention based on a two-dimensional finite element model of aggregate-asphalt interface. The horizontal
strain and shear strain in the interface are evaluated in terms of six factors including asphalt type, temperature, loading level, horizontal
loading, aggregate shape, and interface bonding conditions. The analysis of variance (ANOVA) of influencing factors for critical
response is further conducted. The results show that shear strain is more significant than the horizontal strain, which should be taken
as an evaluation index for aggregate retention in chip seal. The influence of six factors on the shear strain of aggregate-asphalt interface is
highly significant. The greatest significant influence is temperature, followed by horizontal loading, asphalt type, loads, aggregate shape,
and interface bonding conditions. The results of this study provides a mechanistic viewpoint for chip seal designer to consider varying
conditions for ensuring aggregate retention in chip seal.
-
-
-
First Author:
liuli
-
Indexed by:
Journal paper
-
-
-
-
-
-
-
-
-
-
ISSN No.:
19966814
-
Translation or Not:
no
-
-
Date of Publication:
2018-02-04
-
-
