TY - JOUR
T1 - Field aging and development of aging model for hot-poured crack sealants
AU - Ozer, Hasan
AU - Yousefi, Seyed Saleh
AU - Al-Qadi, Imad L.
AU - Elizalde-Castro, Guillermo
N1 - Funding Information:
This research was sponsored by FHWA Pooled-Fund Study TPF5. Contributions to this study also are acknowledged from participating states, industry, and provinces. The authors thank Kevin McGhee and Bill Bailey of the Virginia Department of Transportation (DOT); Imran Bashir of the Ministry of Transportation, Ottawa, Ontario, Canada; Andy Bennett of the Maryland DOT; Paulette Hanna of the Wisconsin DOT; Beran Black of the New Hampshire DOT; and Jim McGraw of the Minnesota DOT. The authors thank Catalina A. Gonzalez and the graduate students who assisted in the pooled-fund study.
PY - 2015
Y1 - 2015
N2 - An investigation was conducted to evaluate the long-term field aging effects of hot-poured crack sealants by differential aging testing. An analysis of rheological and mechanical properties to implement two performance-based tests was used to characterize aging of sealants. A set of eight types of crack sealants was exposed to approximately 2 years of weathering conditions. Aging mechanisms were investigated by a comparison of the critical properties with those obtained at the time of installation inside a small kettle. Samples were collected every 6 months after installation for laboratory characterization. Laboratory characterization included low-temperature stiffness, cohesion, adhesion, and viscosity. According to the results of the experimental program, a consistent increase was observed in the low-temperature stiffness of crack sealants as a result of weathering. The study showed that the low- And hightemperature properties of the surface portion were significantly influenced by weathering effects even within a short period of time. A superposition rule analogous to time-temperature superposition for viscoelastic materials was applied to develop master curves. A phenomenological aging model was developed as a function of aging time and represented shift factors used in the master curve development. Sealants were categorized as Type A, B, or C on the basis of increasing aging potential.
AB - An investigation was conducted to evaluate the long-term field aging effects of hot-poured crack sealants by differential aging testing. An analysis of rheological and mechanical properties to implement two performance-based tests was used to characterize aging of sealants. A set of eight types of crack sealants was exposed to approximately 2 years of weathering conditions. Aging mechanisms were investigated by a comparison of the critical properties with those obtained at the time of installation inside a small kettle. Samples were collected every 6 months after installation for laboratory characterization. Laboratory characterization included low-temperature stiffness, cohesion, adhesion, and viscosity. According to the results of the experimental program, a consistent increase was observed in the low-temperature stiffness of crack sealants as a result of weathering. The study showed that the low- And hightemperature properties of the surface portion were significantly influenced by weathering effects even within a short period of time. A superposition rule analogous to time-temperature superposition for viscoelastic materials was applied to develop master curves. A phenomenological aging model was developed as a function of aging time and represented shift factors used in the master curve development. Sealants were categorized as Type A, B, or C on the basis of increasing aging potential.
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U2 - 10.3141/2481-12
DO - 10.3141/2481-12
M3 - Article
AN - SCOPUS:84975865470
SN - 0361-1981
VL - 2481
SP - 90
EP - 99
JO - Transportation Research Record
JF - Transportation Research Record
ER -