Research on Key Technologies for Design and Construction of Ultra-thin Wearing Layer Mixture
In order to improve the pavement performance of ultra-thin wearing layer asphalt mixture and improve the construction technology of ultra-thin wearing layer pavement,oriented to the actual needs of project,the main aggregate void filling method(CAVF)is used to optimize the mix ratio of ultra-thin wearing layer mixture.Based on the Qishi Highway Construction Project,a complete set of key construction technology for the ultra-thin wearing layer is proposed.The results show that GT-8 synthetic ratio of ultra-thin wearing layer is obtained based on CAVF method.The mixing ratio of 5～8 mm,3～5 mm and 0～3 mm aggregates is 58.45:19.49:19.06.The optimum asphalt content is 7.9％.According to the laboratory test and engineering experience,the key construction technologies of ultra-thin wearing layer including the construction preparation,mixture production and transportation,mixture paving and compaction are put forward.Through the inspection and evaluation of the construction section,the ultra-thin asphalt wearing layer GT-8 has the excellent skid resistance,water tightness and flatness.The application of ultra-thin wearing layer technology has achieved the good construction quality and effect.
NETL
NSTL
万方数据
维普
