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Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractPortland cement concrete slabs are a common form of highway pavements in Indiana. As a result of their widespread use, the economic impact of their maintenance and life span is therefore tremendous. In Indiana, these types of pavements have been experiencing premature random transverse mid-panel cracking. This phenomenon has been observed under a variety of environmental and traffic conditions. Also, it has been found that the cracking occurs in conjunction with the opening of the lanes to traffic, within months of construction. In this project, a research synthesis was carried out to determine exactly what the current state of knowledge on random transverse mid-panel cracking of Portland cement concrete pavements. This was accomplished by means of a comprehensive literature review of published works and through a survey of other DOT's. In addition, preliminary analyses were carried out to help further understand and confirm the findings from the research synthesis. Key WordsJointed, plain, concrete, pavements, mid-panel, random, transverse, cracking, finite element, analysis Mid-Panel Cracking of Portland Cement Concrete Pavements in Indiana IntroductionPortland cement concrete slabs are a common form of highway pavements in Indiana. As a result of their widespread use, the economic impact of their maintenance and life span is therefore tremendous. In Indiana, these types of pavements have been experiencing premature random transverse mid-panel cracking. This phenomenon has been observed under a variety of environmental and traffic conditions. Also, it has been found that the cracking occurs in conjunction with the opening of the lanes to traffic, within months of construction.Although, theories abound as to the causes for the random mid-panel cracking problem, such as usage (driving/passing lane) and sub-grade conditions, no repeatable experimental or analytical evidence has been developed to explain this phenomenon.In an attempt to rectify the problem, INDOT made adjustments in the geometry of the concrete slabs. However, it was found that this change did not affect mid-panel cracking.In this project, a research synthesis was carried out to determine exactly what the current state of knowledge on random transverse mid-panel cracking of Portland cement concrete pavements. This was accomplished by means of a comprehensive literature review of published works and through a survey of other DOT's. In addition, preliminary analyses were carried out to help further understand and confirm the findings from the research synthesis. FindingsThe results from the literature review indicate there is no one clear factor that can be identified as the major cause of transverse cracking of jointed plain concrete pavement. According to most researchers, the combined mechanisms of curling of the concrete slab due to temperature gradients, and fatigue due to repeated traffic loads, lead to the occurrence of the trans...
Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractPortland cement concrete slabs are a common form of highway pavements in Indiana. As a result of their widespread use, the economic impact of their maintenance and life span is therefore tremendous. In Indiana, these types of pavements have been experiencing premature random transverse mid-panel cracking. This phenomenon has been observed under a variety of environmental and traffic conditions. Also, it has been found that the cracking occurs in conjunction with the opening of the lanes to traffic, within months of construction. In this project, a research synthesis was carried out to determine exactly what the current state of knowledge on random transverse mid-panel cracking of Portland cement concrete pavements. This was accomplished by means of a comprehensive literature review of published works and through a survey of other DOT's. In addition, preliminary analyses were carried out to help further understand and confirm the findings from the research synthesis. Key WordsJointed, plain, concrete, pavements, mid-panel, random, transverse, cracking, finite element, analysis Mid-Panel Cracking of Portland Cement Concrete Pavements in Indiana IntroductionPortland cement concrete slabs are a common form of highway pavements in Indiana. As a result of their widespread use, the economic impact of their maintenance and life span is therefore tremendous. In Indiana, these types of pavements have been experiencing premature random transverse mid-panel cracking. This phenomenon has been observed under a variety of environmental and traffic conditions. Also, it has been found that the cracking occurs in conjunction with the opening of the lanes to traffic, within months of construction.Although, theories abound as to the causes for the random mid-panel cracking problem, such as usage (driving/passing lane) and sub-grade conditions, no repeatable experimental or analytical evidence has been developed to explain this phenomenon.In an attempt to rectify the problem, INDOT made adjustments in the geometry of the concrete slabs. However, it was found that this change did not affect mid-panel cracking.In this project, a research synthesis was carried out to determine exactly what the current state of knowledge on random transverse mid-panel cracking of Portland cement concrete pavements. This was accomplished by means of a comprehensive literature review of published works and through a survey of other DOT's. In addition, preliminary analyses were carried out to help further understand and confirm the findings from the research synthesis. FindingsThe results from the literature review indicate there is no one clear factor that can be identified as the major cause of transverse cracking of jointed plain concrete pavement. According to most researchers, the combined mechanisms of curling of the concrete slab due to temperature gradients, and fatigue due to repeated traffic loads, lead to the occurrence of the trans...
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