Application of Grooving Technology to Cement Concrete Pavement of Tunnel in Expressways

With the increase of the tunnel number in the expressways,the tunnel safety becomes the main problem.The skid resistance performance is one of the main indexes influencing the safety and quality of the tunnel.According to the influencing factors of the skid resistance performance in the pavement,such as structure and material of tunnel pavement,skid resistance structure,road surface pollution, transportation load and so on,the grooving technology is proposed to be used to improve the skid resistance performance of the tunnel pavement.In view of the application of the grooving technology to the tunnel,the best reasonable combination of the grooving parameters,the best time of grooving and the key points of construction are proposed.This study provides the basis for the application of the grooving technology to the tunnel pavement.