一、前言在党中央关于加速建设我国海港重要指示的鼓舞下,连云港市港口建设工程迅速展开,公路黑色路面建设也取得很大成就。为了总结经验教训,公路工程专业师生曾于1974—1975年两次去连云港市,与交通局的工人、技术人员共同对以往修筑的路面进行调查。(详见“黑 I. Foreword Inspired by the Party Central Committee’s important instructions on speeding up the construction of China’s seaport, the construction of the port in Lianyungang City has started rapidly and great achievements have also been made in the construction of the black pavement on the highway. In order to summarize the experience and lessons learned, highway engineering teachers and students twice went to Lianyungang City in 1974-1975 to investigate with the workers and technicians of the Department of Transportation the pavement that was built in the past. (See "black