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Paper Information

Journal:   INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)   SUMMER 2007 , Volume 18 , Number 2; Page(s) 77 To 85.
 
Paper: 

LOADING TIME DURATION EFFECTS ON EQUIVALENT LOAD FACTOR

 
 
Author(s):  SARKAR A.R., MANSOUR KHAKI ALI
 
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Abstract: 

Due to special behavior of hot-mix asphalt (visco-elastic property), road body's reaction under load is a function of loading time duration. On the other hand equivalent load factors (ELF) depend on pavement distress and pavement reaction. Therefore this research investigates loading time duration effects on ELF. Since load time duration varies with vehicle speed therefore this thesis discuss about two aspects of load time.
1. Dynamic load effects on ELF.
2. Static loading time duration on ELF.
Due to lack of required equipments and resources for practical research in this area in Iran, theoretical method was used in this research. A piece of AASHTO road was selected for comparing AASHTO ELF with estimated ELF in this thesis. After calculating pavement's critical reaction, in the speed range of 20 km/h to 120 km/h, ELF was determined. In this research, for evaluating the above mentioned reaction, KENLAYER software was employed.
On the basis of theoretical method, final results clarify that loading time duration effects on equivalency load factors method is different at various criteria and axle.

 
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References: 
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