Abstract

This article proposes a mechanistic model for the interface between the asphalt surface course and granular base layers, along with an experimental procedure to assess the model parameters. The Mohr-Coulomb yield criteria was used to model interface shear strength, and Goodman’s law was used to relate the relative displacement and shear stress over the interface that bonds the investigated layers. Moreover, the transversal reaction modulus was assumed to be stress dependent, which makes the model nonlinear. Experimental results have shown agreement with model assumptions. Furthermore, a simulation of Cracked Area evolution was performed to verify the effects of the interface model on the pavement structural response. Finally, the model proposed presented itself to be a strong alternative to properly consider the mechanical behavior of the asphaltic-granular base layers interface.

References

1.
Uzan
J.
,
Livneh
M.
, and
Eshed
Y.
, “
Investigation of Adhesion Properties between Asphaltic-Concrete Layers
,”
Association of Asphalt Paving Technologists Proceedings
47
(
1978
):
495
521
.
2.
Mantilla
C. A.
and
Button
J. W.
,
Prime Coat Methods and Materials to Replace Cutback Asphalt, FHWA/TX-94/1334-1F
(
Austin, TX
:
Texas Department of Transportation
,
1994
).
3.
Khweir
K.
and
Fordyce
D.
, “
Influence of Layer Bonding on the Prediction of Pavement Life
,”
Proceedings of the Institution of Civil Engineers - Transport
156
, no. 
2
(May
2003
):
73
83
. https://doi.org/10.1680/tran.2003.156.2.73
4.
Ziari
H.
and
Khabiri
M. M.
, “
Interface Condition Influence on Prediction of Flexible Pavement Life
,”
Journal of Civil Engineering and Management
13
, no. 
1
(January
2007
):
71
76
. https://doi.org/10.3846/13923730.2007.9636421
5.
Hu
X.
and
Walubita
L. F.
, “
Effects of Layer Interfacial Bonding Conditions on the Mechanistic Responses in Asphalt Pavements
,”
Journal of Transportation Engineering
137
, no. 
1
(January
2011
):
28
36
. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000184
6.
Chen
J.-S.
and
Huang
C.-C.
, “
Effect of Surface Characteristics on Bonding Properties of Bituminous Tack Coat
,”
Transportation Research Record: Journal of the Transportation Research Board
2180
, no. 
1
(January
2010
):
142
149
. https://doi.org/10.3141/2180-16
7.
Goodman
R. E.
,
Taylor
R. L.
, and
Brekke
T. L.
, “
A Model for the Mechanics of Jointed Rock
,”
Journal of the Soil Mechanics and Foundations Division
94
, no. 
3
(
1968
):
637
660
.
8.
Lambe
T. W.
and
Whitman
R.
,
Soil Mechanics
(
New York
:
John Wiley & Sons
,
1995
).
9.
Torquato e Silva
S. A.
,
Soares
J. B.
, and
Barroso
S. H. A.
, “
Modelagem constitutiva e caracterização empírica da interface revestimento asfáltico – base granular
,”
Transportes
26
, no. 
2
(August
2018
):
180
191
. https://doi.org/10.14295/transportes.v26i2.1661
10.
Scherer
R. G.
, “
Estudo da Influência da Condição de Aderência entre Camadas de Pavimentos em Seu Comportamento Mecânico
” (master’s thesis,
Universidade Federal de Santa Maria
,
2018
).
11.
Hermann do Nascimento
L. A.
, “
Implementation and Validation of the Viscoelastic Continuum Damage Theory for Asphalt Mixture and Pavement Analysis in Brazil
” (PhD diss.,
North Carolina State University
,
2015
).
This content is only available via PDF.
You do not currently have access to this content.