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由交通部公路科学研究所、同济大学和石油大学等单位承担的“七五”国家重点科技攻关项目《高等级公路半刚性基层沥青路面结构设计和抗滑表层的研究》(24-1-1)和《重交通道路沥青在高等级公路工程中的实用技术》(24-2-1)最近在西安通过国家鉴定.与会专家一致认为:两专题总体水平达到当代国际先进水平. 针对我国“七五”前修建的半刚性基层沥青路面使用寿命短、开裂严重,从而在进行高等级公路设计时沥青面层有越修越厚的趋势以及长期以来没有合格的国产重交通道路沥青,
The “Seventh Five-Year Plan” national key scientific and technological project undertaken by the Highway Science Research Institute of the Ministry of Communications, Tongji University and the University of Petroleum, “Design of Asphalt Pavement Structure for Semi-Rigid Roads and Study of Anti-Slip Surfaces” (24-1-1 ) And “Practical Technologies of Heavy Traffic Asphalt in High-grade Highway Engineering” (24-2-1) recently passed the national appraisal in Xi’an.The participating experts agreed that the overall level of the two special topics has reached the international advanced level in contemporary times. Five "pre-built semi-rigid base asphalt pavement has short service life and severe cracking, so that the design of high-grade highway asphalt pavement more repaired thicker trend and the long-standing lack of qualified domestic heavy traffic asphalt,