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Study on Fatigue Life of Continuously Reinforced Concrete Pavement with Design Parameter  

Park, Jong-Sup (상명대학교 토목환경공학부)
Kang, Young-Jong (고려대학교 건축.사회환경공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.7, no.5, 2007 , pp. 1-10 More about this Journal
Abstract
A laboratory investigation is conducted to characterize and quantify fatigue lives of continuously reinforced concrete pavements (CRCP) with initial design parameters. Eight specimens scaled were made based on results of finite-element analyses and stress-strain curve comparisons. Static tests were firstly performed to obtain magnitudes of static failure loads and to predict crack patterns before fatigue tests. The fatigue lives measured in the study were compared based on each initial design parameter. The comparison indicates that the fatigue lives of CRCP specimens with initial cracks increases with increasing the initial crack spacing, and CRCP specimens with reinforcements at top of the concrete slab have more fatigue lives than those with reinforcements at midheight of the concrete slab. In addition, the fatigue lives were significantly affected by soil conditions under the CRCP specimens. The results obtained in the study can be used for maintenance and retrofit of the continuously reinforced concrete pavements.
Keywords
Concrete Pavement; Continuously Reinforced Concrete Pavement; Fatigue Life; Crack; Soil Condition;
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