Abstract
Environmental conditions have a significant effect on the performance of both flexible and rigid pavements. External factors such as precipitation, temperature, freeze-thaw cycles, and depth to water table play a key role in defining the bounds of the impact the environment can have on the pavement performance. As part of the new US Mechanistic-Empirical Pavement Design Guide (MEPDG) being developed under the overall project sponsored by the National Cooperative Highway Research Program (NCHRP project 1–37A), a climatic modelling tool called the Enhanced Integrated Climatic Model (EICM) was implemented to incorporate the changes in temperature and moisture of unbound materials into the design process. Currently a new independent review project (NCHRP 1–40) is reviewing this model to correct errors and to develop further enhancements to produce a final methodology ready for approval/disapproval vote by AASHTO in 2006. This paper reflects the methodology used for the MEPDG and present the models incorporated by Arizona State University into the EICM, the input needed and the outputs generated by the program. A discussion on how EICM determines the temperature and moisture distribution within the pavement system is also presented.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 667-693 |
| Number of pages | 27 |
| Journal | Road Materials and Pavement Design |
| Volume | 8 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 2007 |
| Externally published | Yes |
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Keywords
- Climatic Model
- Design Guide
- Environmental Effects
- Pavement Design
ASJC Scopus subject areas
- Civil and Structural Engineering
Cite this
Incorporation of Environmental Effects in Pavement Design. / Zapata, Claudia; Witczak, M. W.; Houston, W. N.; Andrei, D.
In: Road Materials and Pavement Design, Vol. 8, No. 4, 01.01.2007, p. 667-693.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Incorporation of Environmental Effects in Pavement Design
AU - Zapata, Claudia
AU - Witczak, M. W.
AU - Houston, W. N.
AU - Andrei, D.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Environmental conditions have a significant effect on the performance of both flexible and rigid pavements. External factors such as precipitation, temperature, freeze-thaw cycles, and depth to water table play a key role in defining the bounds of the impact the environment can have on the pavement performance. As part of the new US Mechanistic-Empirical Pavement Design Guide (MEPDG) being developed under the overall project sponsored by the National Cooperative Highway Research Program (NCHRP project 1–37A), a climatic modelling tool called the Enhanced Integrated Climatic Model (EICM) was implemented to incorporate the changes in temperature and moisture of unbound materials into the design process. Currently a new independent review project (NCHRP 1–40) is reviewing this model to correct errors and to develop further enhancements to produce a final methodology ready for approval/disapproval vote by AASHTO in 2006. This paper reflects the methodology used for the MEPDG and present the models incorporated by Arizona State University into the EICM, the input needed and the outputs generated by the program. A discussion on how EICM determines the temperature and moisture distribution within the pavement system is also presented.
AB - Environmental conditions have a significant effect on the performance of both flexible and rigid pavements. External factors such as precipitation, temperature, freeze-thaw cycles, and depth to water table play a key role in defining the bounds of the impact the environment can have on the pavement performance. As part of the new US Mechanistic-Empirical Pavement Design Guide (MEPDG) being developed under the overall project sponsored by the National Cooperative Highway Research Program (NCHRP project 1–37A), a climatic modelling tool called the Enhanced Integrated Climatic Model (EICM) was implemented to incorporate the changes in temperature and moisture of unbound materials into the design process. Currently a new independent review project (NCHRP 1–40) is reviewing this model to correct errors and to develop further enhancements to produce a final methodology ready for approval/disapproval vote by AASHTO in 2006. This paper reflects the methodology used for the MEPDG and present the models incorporated by Arizona State University into the EICM, the input needed and the outputs generated by the program. A discussion on how EICM determines the temperature and moisture distribution within the pavement system is also presented.
KW - Climatic Model
KW - Design Guide
KW - Environmental Effects
KW - Pavement Design
UR - http://www.scopus.com/inward/record.url?scp=85008843383&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85008843383&partnerID=8YFLogxK
U2 - 10.1080/14680629.2007.9690094
DO - 10.1080/14680629.2007.9690094
M3 - Article
AN - SCOPUS:85008843383
VL - 8
SP - 667
EP - 693
JO - Road Materials and Pavement Design
JF - Road Materials and Pavement Design
SN - 1468-0629
IS - 4
ER -