Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
This study demonstrates how the software programs CalBack and CalME were used to predict the in-situ pavement performance of two test sections at the Minnesota Road Research Project (Mn/ROAD). The study demonstrates the benefits of using CalBack to backcalculate changes in layer moduli from deflection data; the resulting data show the influence of freeze/thaw and seasonal changes of subgrade stiffness; the confining effects of overlying layers; and the hardening/aging effects of time on the hotmix asphalt (HMA). Data from the comprehensive Mn/ROAD database were used to run CalME, a program that simulates pavement performance using a mechanistic-empirical approach. These inputs included data collected on traffic and environment, from condition surveys, and during falling weight deflectometer and material testing. Two mainline flexible pavement cellsCell 3 and Cell 21 were selected for the study for two reasons: because of the availability of material for laboratory testing by the UCPRC to characterize material response/performance models for CalME simulation, and because of the cells contrasting pavement performance with respect to fatigue cracking and rutting.
This study demonstrates how the software programs CalBack and CalME were used to predict the in-situ pavement performance of two test sections at the Minnesota Road Research Project (Mn/ROAD). The study demonstrates the benefits of using CalBack to backcalculate changes in layer moduli from deflection data; the resulting data show the influence of freeze/thaw and seasonal changes of subgrade stiffness; the confining effects of overlying layers; and the hardening/aging effects of time on the hotmix asphalt (HMA). Data from the comprehensive Mn/ROAD database were used to run CalME, a program that simulates pavement performance using a mechanistic-empirical approach. These inputs included data collected on traffic and environment, from condition surveys, and during falling weight deflectometer and material testing. Two mainline flexible pavement cellsCell 3 and Cell 21 were selected for the study for two reasons: because of the availability of material for laboratory testing by the UCPRC to characterize material response/performance models for CalME simulation, and because of the cells contrasting pavement performance with respect to fatigue cracking and rutting.
Mn/ROAD Case Study Using CalBack and CalME
2009
36 pages
Report
Keine Angabe
Englisch
Highway Engineering , Construction Equipment, Materials, & Supplies , Pavements , Minnesota , Fatigue cracking , Rutting , Subgrades , Aggregates , Hot mix asphalts , Seasonal variations , Freezing , Thawing , Layers , Deflection , Laboratory tests , Computer programs , Performance evaluation , Research project , CalBack computer program , CalME computer program
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