2004年12月4～5日,山东省交通厅召开交通科技项目专家鉴定会。对山东省交通厅公路局、山东省公路桥梁检测中心、交通部公路科学研究所、北京交通大学、日照市公路管理局、石油大学(华东)等联合研究的四个交通科技项目进行了专家鉴定。课题鉴定委员会一致认为:《山东省公路工程混凝土超声回弹测强曲线的研究制定》课题达到了国内领先和国 December 2004 4 ~ 5, Shandong Provincial Communications Department held a transportation science and technology project expert appraisal. The expert team appraised the four traffic science and technology projects jointly researched by the Highway Bureau of Shandong Communications Department, the Highway and Bridge Inspection Center of Shandong Province, the Highway Science Research Institute of Ministry of Communications, Beijing Jiaotong University, Rizhao Highway Administration, and Petroleum University (East China) . Subject Identification Committee agreed that: “Shandong Province Highway Engineering Concrete Ultrasound rebound strength curve of the research project” reached the leading domestic and country