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- W568843963 abstract "In Chile, the surface smoothness of newly constructed public and “in-consession” highways, is measured by means of inertial profilers and reported using the International Roughness Index (IRI) for 200-m length sections. This study arises from the need to evaluate the performance of the typical profilers utilized in Chile, where there is no methodology to ensure the quality of the measured data. Experimental measurements were performed in fifteen test sections in central Chile, covering a wide range of pavement types and surfaces, using two profilers. The IRI and profile repeatability for each device, and the reproducibility between them was analyzed. Several methods were applied: cross-correlation analysis (AASHTO Standard PP49-08), comparison of traces (ASTM E950), the method of spectral analysis of pavement profiles, and roughness profiles. The profilers evaluated, were able to obtain adequate levels of repeatability and reproducibility for network-level applications. However, for quality control or determining acceptance and penalty of newly constructed pavements, repeatability of one profiler was compromised, especially in textured surfaces. It is believed that the laser light geometry affected the measurements. The use of the IRI from a 200-m length section as the only criteria for acceptance and penalty is not adequate. Moreover, in the national practice, roughness values are obtained from only one measurement. Thus, the precision and accuracy associated with every device is critical. A complete revision of the national normative, as well as a methodology to ensure the quality of the roughness measurements in Chile, is suggested." @default.
- W568843963 created "2016-06-24" @default.
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- W568843963 date "2011-01-01" @default.
- W568843963 modified "2023-09-27" @default.
- W568843963 title "Repeatability and Reproducibility of Typical Inertial Profilers Used in Chile and Their Impact on Roughness Measurements" @default.
- W568843963 hasPublicationYear "2011" @default.
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