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前言交通部第一、三、四航务工程局三单位于一九七二年共同组成对“港工混凝土建筑物潮差及水下部位修补材料的研究”小组。经过一年的努力,进行了反复试验。取得了如下的成果,其粘结强度在潮湿状态下能达到相应于25号混凝土的抗拉强度;在水下能达到相应于200号混凝土的抗拉强度。并结合新河船厂滑道工程的修补得到进一步的考验。
Foreword The three units of the Engineering Bureau of the No. 1, No. 3 and No. 4 Traffic Engineering Departments of the Ministry of Communications jointly formed a sub-group on “Research on Tide-Contrast and Subsurface Repair Materials of Port-Hong Kong Concrete Buildings” in 1972. After a year of hard work, repeated tests. Achieved the following results, the bond strength in wet conditions can reach the corresponding tensile strength of No. 25 concrete; under water can reach the corresponding No. 200 concrete tensile strength. Combined with the repair of the new river shipyard chute project get further test.