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原文传递 Analysis of Pavement Structural Variability; Final rept. Oct 94-1997.3

题名：	Analysis of Pavement Structural Variability; Final rept. Oct 94-1997.3
作者：	Kenis, W. J.; Wang, W.
关键词：	Pavement wear; Asphalt pavements; Performance evaluation; Deflections; Thickness; Asphalt concrete; Aggregates; Pavement bases; Wear; Road materials; Construction; Defects
摘要：	It is well known that during construction of any highway pavement, variations in layer material quality, environmental influences, homogeneity, and variations in construction technique all leads to nonuniform spatial variations in the layer material properties/layer thicknesses comprising the pavement structure. As vehicle loads are applied to the pavement, the spatial variations result in the development of nonuniform spatial distributions of stress, strain, and deformatin within the pavement, in tern causing nonuniform distributions of defects in the pavement. (External influences arising after construction such as the infiltration of water, drying out and freeze thaw cycles will also contribute to such nonuniform spatial distribution of defects). The nonuniform distribution of defects eventually manifest into visible differences in pavement distress, e.g. variations in area cracked, and variations in permanent deformation along the wheel track called rutting. It is an important aspect of the Dynamic Interaction Vehicle - INfrastructure Experiment (DIVINE) program to attempt to distinguish between the development of pavement distress resulting from initial variations in materials properties/layer thicknesses and from variations in the dynamic wheel forces imposed to the pavement due to tire-suspension dynamics. The analyses presented in the report were conducted to determine if such differences in the level of these two phenomena is detectable. In the analyses initial structure variability of the Canterbury Accelerated Pavement Testing Indoor Facility at University of Canterbury, New Zealand (CAPTIF) pavements is investigated in terms of two known measured variables, thickness and falling weight deflectometer (FWD) center deflection.
总页数：	53p
报告类型：	科技报告