A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New Model for Longitudinal Tracking in Non-jointed Plain Concrete Pavements
Houben has developed a model concerning the transversal cracking in non-jointed plain concrete pavements using equations from the standard Eurocode 2 for the time-dependent concrete properties and shrinkage. For properties that are not available in standards, Houben made assumptions based on engineering judgment. After that, Pradena and Houben studied those assumptions more in depth, including the maturity method. The results were compared with field measurements and a new equation for the relaxation factor was proposed. The objective of the present paper is to apply those findings for analysis of the longitudinal cracking process in non-jointed plain concrete pavements taking into account different conditions. The calculation results include the time of occurrence of longitudinal crack(s), if any, the variation of the crack widths and the maximum pavement width that can be constructed without any longitudinal joint. In the cases that a longitudinal crack occurs, it is always only one crack which occurs at early age. Because differences in the relaxation at this age are fundamental, future analyses need to concentrate at early age. The new approach confirms the complexity of this kind of modelling, improves the analysis from a theoretical point of view, and yields new insights for future investigations.
New Model for Longitudinal Tracking in Non-jointed Plain Concrete Pavements
Houben has developed a model concerning the transversal cracking in non-jointed plain concrete pavements using equations from the standard Eurocode 2 for the time-dependent concrete properties and shrinkage. For properties that are not available in standards, Houben made assumptions based on engineering judgment. After that, Pradena and Houben studied those assumptions more in depth, including the maturity method. The results were compared with field measurements and a new equation for the relaxation factor was proposed. The objective of the present paper is to apply those findings for analysis of the longitudinal cracking process in non-jointed plain concrete pavements taking into account different conditions. The calculation results include the time of occurrence of longitudinal crack(s), if any, the variation of the crack widths and the maximum pavement width that can be constructed without any longitudinal joint. In the cases that a longitudinal crack occurs, it is always only one crack which occurs at early age. Because differences in the relaxation at this age are fundamental, future analyses need to concentrate at early age. The new approach confirms the complexity of this kind of modelling, improves the analysis from a theoretical point of view, and yields new insights for future investigations.
New Model for Longitudinal Tracking in Non-jointed Plain Concrete Pavements
Pradena, Mauricio (author) / Houben, Lambert (author)
Second International Conference on Sustainable Construction Materials: Design, Performance, and Application ; 2012 ; Wuhan, China
2012-12-13
Conference paper
Electronic Resource
English
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