Application of no-rutting pavement at road intersections
LÜ Jianhan
LÜ Fengli
LIU Zhimin
GENG Lei
Abstract：To address the problem of frequent rutting damage at the intersection of the Qingdao-Yinchuan Expressway at the Jinjia Interchange to the Shandong Expressway junction from station K428+300 to K428+550 on G104,a no-rutting pavement(NRP)technology is used in the repair and maintenance construction,utilizing no-rutting agents and modified styrene-butadiene-styrene(SBS)block copolymers.The designed pavement structure consists of a 4 cm heavy traffic anti-rutting modified asphalt Ma Gaiti crushed stone mixture SMA-13,and a 6 cm heavy traffic anti-rutting modified asphalt concrete AC-20(with NRP accounting for 1％of the mass fraction in the asphalt mixture)to improve the rutting situation.Through indoor testing,the optimum asphalt content are determined to be 5.9％for SMA-13 and 4.3％for AC-20.After actual construction and half a year of operation,the pavement's rutting depth,construction depth,and rutting depth are inspected.Results show that after 0.5 a of operation,the actual rutting depth decreases by approximately 36％compared to the design rutting depth,indicating a significant improvement in the road's bearing capacity.The construction depth exceeds 0.5 mm,showing excellent skid resistance performance.The no-rutting pavement surface is smooth,and the rutting depth is less than 4.00 mm,significantly lower than the standard rutting depth.
Keywords：NRPno-rutting agentrut depthstructural depthasphalt pavement
Publication Date：2024-09-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 56-62 )