Simulation test method of temperature field of asphalt concrete pavement

Abstract

The invention discloses a simulation test method of a temperature field of an asphalt concrete pavement. An actual solar radiation changing period and a temperature field changing rule of a to-be-simulated asphalt concrete pavement are detected and the detected actual solar radiation changing period and temperature field changing rule are recorded; the solar radiation is simulated by using ultraviolet radiation of an ultraviolet lamp and an air temperature is adjusted by using an air temperature regulator; a temperature field is generated in a full-thickness asphalt concrete test piece, an infrared camera tests surface temperature distribution of the test piece after stabilization, drilling is carried out in a red region of the surface temperature field and the depths of the drilled holes reach intermediate depths of all surface layers of the full-thickness asphalt concrete test piece, and a temperature sensor is installed; and according to the internal temperature measurement result of the asphalt concrete test piece, the air temperature and the ultraviolet light intensity are adjusted, so that the asphalt concrete test piece generates temperature distribution equivalent to the actual temperature field of the to-be-simulated asphalt concrete pavement. According to the invention, the simulated temperature field is close to the temperature field of the actual pavement, so that the accurate reference data are provided for the road research staff and the damage process of the asphalt concrete pavement is analyzed conveniently.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to a method for simulating a temperature field of an asphalt concrete road surface. Background technique [0002] During the use of asphalt concrete pavement, it is subjected to the comprehensive effect of vehicle load and climate and environmental factors, resulting in a gradual decline in the road performance of the pavement. Asphalt is a typical temperature-sensitive material, and the pavement performance of asphalt concrete pavement is especially affected by temperature. Various common failure forms of asphalt pavement, such as high-temperature rutting, aging, low-temperature cracking and fatigue damage, are directly related to the pavement temperature and its distribution. [0003] During the actual use of asphalt concrete pavement, due to solar radiation, air flow and other reasons, the temperature of asphalt pavement has a certain temperature gradient fr...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for simulating the temperature field of asphalt concrete pavement, so as to improve the p

Images