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

Abstract

The invention relates to a method for detecting and evaluating the construction quality of asphalt pavement. Firstly, the method of mathematical statistics is used to determine the reasonable detection points of the asphalt pavement by orderly sampling and collecting the density of sample points, so as to drill cylindrical core samples. The distance between the locations of the same group of core samples is 20-30cm, and then the rutting test is carried out to evaluate the anti-rutting performance of the asphalt pavement through the dynamic stability, which can effectively evaluate the construction quality of the asphalt pavement, and can avoid completely relying on random selection of points The one-sidedness brought about by this method can further evaluate the overall construction quality of asphalt pavement more comprehensively; the damage caused by drilling cylindrical core samples to the pavement is smaller than that of plate-shaped test pieces, and it is easy to repair, and the core samples used can also be used to test the pavement The degree of compaction further reduces the damage to the road surface; it not only ensures the accuracy of the test results, but also reduces the damage to the road surface caused by continuously drilling two core samples at the same position.

Description

technical field [0001] The invention belongs to the application field of asphalt pavement construction quality evaluation, and in particular relates to a detection and evaluation method for asphalt pavement construction quality. Background technique [0002] Compaction molding is the last link in the production and construction of asphalt pavement, and it is also a key link in the formation of asphalt pavement quality. In the compaction link, the strength, stability and fatigue characteristics of the asphalt pavement mixture are gradually formed. It affects the road performance and durability of asphalt pavement. The anti-rutting performance is the most important and intuitive form of asphalt pavement performance. It directly reflects the performance of the "compacted" asphalt mixture itself. It can be considered that the rutting performance is an indicator of the construction quality of asphalt pavement. Objective and comprehensive form of expression. [0003] In my count...

AI Technical Summary

Problems solved by technology

The plane size of the pavement cutting test piece is 30cm×300cm. Cutting the plate-type test piece on the road surface will cause great damage to the asphalt pavement, and it is difficult to carry out large-scale sampling tests

At the same time, it is more difficult to sample larger-sized plate specimens, which usually require large machinery such as forklifts to obtain samples, which will cause greater disturbance to the samples taken, resulting in test results that cannot truly reflect the anti-rutting performance of the road surface

Cylindrical core samples have the advantages of less damage to the asphalt pavement and convenient drilling of core samples, but currently only the Hamburg Rutting Tester (HWTD), Asphalt Pavement Analyzer (APA) and Rotary Loading rutting test

Moreover, these test equipment are expensive and difficult to promote in grassroots units

At present, there are only rutting test methods and evaluation standards for plate-shaped specimens in my country, and there is a lack of high-temperature performance detection methods and evaluation standards based on cylindrical core samples.

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