A rapid judgment method for maintenance timing of drained asphalt pavement

Abstract

The invention discloses a method for quickly determining the maintenance timing of a drained asphalt pavement, which comprises the following steps: selecting a target experimental road; setting road markings on the target experimental road; Asphalt pavement ground temperature; construct the first curve according to the ambient temperature before opening to traffic and the ground temperature of drained asphalt pavement before opening to traffic; measure the ambient temperature after opening and the ground temperature of drained asphalt pavement after opening at the marked position of the pavement after opening; The ground temperature of the post-drainage asphalt pavement constructs a second curve; compares the first curve and the second curve and generates a comparison result, and judges whether the target experimental road needs maintenance according to the comparison result. The technical effect of the invention is that the ground temperature and the ambient temperature at the marked place are measured by the infrared temperature detection instrument to determine whether maintenance is required, the operation is simple, the requirements for the detection personnel are low, and the operation error is not easy to be caused.

Description

technical field [0001] The invention relates to drainage asphalt pavement maintenance, and a method for quickly judging the timing of drainage asphalt pavement maintenance. Background technique [0002] With the continuous development of domestic sponge cities, drainage asphalt pavement, as a multi-functional high-grade pavement with a porosity as high as 18% to 25%, is being promoted on a large scale due to its multiple functions such as safety, noise reduction and urban heat island effect relief. and apply. [0003] And as the application continues to deepen, its supporting maintenance is also becoming more and more complete. The main indicator that affects the functionality of this type of pavement is the pavement water seepage coefficient. According to the specification, the water seepage coefficient of motor vehicle road surface should not be lower than 1200ml / 15s when it is completed, and it is stipulated that the road surface water seepage meter should be used to det...

AI Technical Summary

Problems solved by technology

[0004] However, the detection method using the pavement water seepage coefficient has several disadvantages: ①The detection process generally requires the use of putty or plasticine or silica gel materials as sealing materials, and the above materials will block the surface structure of the road surface after the detection is completed, resulting in local pollution of the road surface; ②It is harmful to the operation The level of personnel required is high, and inspection personnel are prone to make mistakes, resulting in inaccurate detection; ③The water seepage coefficient of drainage asphalt pavement is generally above 1200ml / 15s, and some are even as high as 1700ml / 15s. The diameter of the nozzle is only 7mm, which cannot meet the test requirements of high water seepage coefficient. It needs special modification by the road water seepage meter manufacturer. However, there is no unified basis for the current modification, which will cause inaccurate test results; The detection time is long, and for safety reasons, the entire detection process needs to be closed to traffic

Images