Abstract：Marine high performance concrete (HPC) has been widely used as a highly durable concrete material in marine infrastructures such as wharfs and bridges. To investigate the long-term performance of marine HPC under actual environment, tests were carried out on concrete samples collected from the Guangdong Zhanjiang engineering materials exposure site. Beyond the traditional chloride profile test, the mercury intrusion porosimetry (MIP), the backscattered electrons (BSE) and the energy dispersive X-ray spectroscopy (EDX) were used to characterize the pore distribution and chemical chloride binding of the exposed concretes. The comparison results show that the marine HPC has lower porosity and smaller pore sizes than normal concrete. High amount of Friedel’s salt crystals may be observed in the marine HPC, which reveals significant chloride binding capacity. The long-term exposure experiments and application performance in projects reveal that the marine HPC shall be a basic measure to improve the chloride resistance and prolong the service life for marine concrete structures. In preparing this review of durability research development, Chen Zhaoyuan who had played a great role and made leading contributions to the application of marine HPC provided important inspiration and promotion.
王胜年 曾俊杰 范志宏. 基于长期暴露试验的海工高性能混凝土耐久性分析[J]. 土木工程学报, 2021, 54(10): 82-89.
Wang Shengnian Zeng Junjie Fan Zhihong. Analysis on durability of marine HPC based on long-term exposure experiment. 土木工程学报, 2021, 54(10): 82-89.
