A method for testing and evaluating the uniformity of asphalt pavement construction quality

Abstract

The invention relates to a construction quality uniformity detection and evaluation method of an asphalt pavement. The construction quality uniformity detection and evaluation method comprises the following steps: acquiring a texture image of a surface of a detected road section by adopting an image acquisition device and drilling a density representative core sample; processing the image on the surface of a road and a CT (Computerized Tomography) image of the core sample so as to calculate a pavement macrostructure width index K, a coarse aggregate horizontal non-uniform coefficient DH and vertical non-uniform coefficients DV1 and DV2; evaluating aggregate distribution uniformity of the pavement from the pavement and the inner part of a structure; then, testing densities of different regions of the pavement by adopting a non-nuclear density gauge PQI; calculating density repeatability standard deviations Sr and SR in detection channels and between the detection channels, and density consistency statistic values k and h in the detection channels and between the detection channels; calculating a cross section gap quantity uniformity coefficient UCN and a cross section gap porosity uniformity coefficient UCR of the CT image of the core sample; evaluating compaction quality distribution uniformity of the asphalt pavement from density and porosity distribution conditions. By adopting the method provided by the invention, the problem that a detection index for the construction quality uniformity of the asphalt pavement is lacked in a pavement construction inspection and acceptance process at present is solved.

Description

technical field [0001] The invention belongs to the application field of evaluating the uniformity of asphalt pavement construction, and in particular relates to a method for detecting and evaluating the uniformity of asphalt pavement construction quality. Background technique [0002] Whether the construction quality of asphalt mixture is uniform or not significantly affects the service life and service level of asphalt pavement, and the non-uniformity of asphalt mixture is one of the main causes of early disease of asphalt pavement. Therefore, in the construction of asphalt pavement, it is necessary to effectively control the non-uniformity of asphalt mixture. Reasonably testing and evaluating the construction uniformity of asphalt pavement is a prerequisite to ensure the construction quality of asphalt pavement, but the construction uniformity is not taken as a testing item in the acceptance of asphalt pavement in our country. At present, most of the relevant researches ...

AI Technical Summary

Problems solved by technology

The current pavement quality acceptance system lacks detection indicators that reflect the uniformity of asphalt pavement construction, which is an important reason for the occurrence of diseases on asphalt pavement although the various detection indicators meet the requirements of the specifications.

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