Testing device and method for testing durability of ultrathin wearing layer in tunnel

Abstract

The invention discloses a testing device for testing the durability of an ultrathin wearing layer in a tunnel. A control unit is arranged on one side of a testing box; a tail gas generator is furtherarranged at the bottom of one side of the testing box; a load unit is arranged in the middle of the testing box; a workbench is arranged in the middle of the testing box; an ultrathin wearing layer testing piece is arranged on the workbench; a supporting rod is installed above the workbench; a crawler belt is installed on the supporting rod; the crawler belt is provided with a rolling wheel; the crawler belt drives the rolling wheel to repeatedly roll the ultrathin wearing layer testing piece; a tire pressure monitoring module is installed in the crawler belt; the crawler belt is driven by a motor; a rolling frequency setter is electrically connected with the motor; and a resistance monitoring module is arranged in the rolling wheel. A load is provided by the rolling wheel, so that friction resistance of a tire can be directly measured; and through the tail gas generator for generating tail gas and a humidifier, different tail gas concentration and humidity conditions are simulated, sothat a real testing environment can be provided for evaluating the pavement long-term performance of the ultrathin wearing layer. The anti-skid attenuation laws of the ultrathin wearing layer in different environments are tested, so that the long-term performance of the ultrathin wearing layer is judged.

Description

technical field [0001] The invention relates to the field of road surface testing, in particular to a testing device and method for testing the durability of an ultra-thin wearing layer in a tunnel. Background technique [0002] With the rapid development of my country's economy, the demand for traffic is increasing day by day, and the scale of highway construction has also been greatly improved. After years of highway construction, a large number of tunnels have been built in my country. Due to the dampness and poor ventilation in the tunnels, the anti-skid performance of the road surfaces in the tunnels has declined rapidly, especially some cement concrete pavements, which are corroded by moisture and exhaust gas in the tunnels. , The anti-skid performance has declined precipitously, and some roads have failed to meet the requirements even after one year of traffic opening. As a surface functional layer, the ultra-thin wear layer can better improve the anti-skid performanc...

AI Technical Summary

Problems solved by technology

After years of highway construction, a large number of tunnels have been built in my country. Due to the dampness and poor ventilation in the tunnels, the anti-skid performance of the road surfaces in the tunnels has declined rapidly, especially some cement concrete pavements, which are corroded by moisture and exhaust gas in the tunnels. , the anti-skid performance has declined precipitously, and some roads even fail to meet the requirements after one year of traffic opening

As a surface functional layer, the ultra-thin wear layer can better improve the anti-skid performance of the road surface. At the same time, because of its thinner thickness and better economic effect, it has been used more and more in recent years. However, the ultra-thin wear layer currently on the market The service life of the thin wear layer varies greatly. The ultra-thin wear layer with good durability can be used for up to 10 years, while some ultra-thin wear layers with poor durability are often destroyed within one year of opening to traffic. There is no ultra-thin wear layer in the tunnel. The test device and method of layer durability is an important reason for this phenomenon.

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