CURRENT STATUS OF RESEARCH ON DURABILITY OF SEAWATER-CORAL AGGREGATE CONCRETE
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摘要: 海水珊瑚骨料混凝土是就地取材进行海洋岛礁建设的主要建筑材料,也是海洋国家的研究热点。基于珊瑚骨料混凝土全生命周期的阶段划分法,总结了海水盐分对水泥水化的影响,提出了珊瑚骨料-水泥基体两层次传输机制,综述了矿物腐蚀的主要机理和缓解作用下的损伤和破坏过程,讨论了现有研究不足,展望未来研究重点,为海水珊瑚骨料混凝土耐久性问题的进一步研究提供参考。Abstract: Seawater-coral aggregate concrete has become a new type of building material for constructions in islands and reefs,supporting the development of ocean exploration in China. Based on the stage divisions of whole life cycle of seawater-coral aggregate concrete structures,the influences of salinity in seawater on early-age hydration of cement were summarized. A concept of two-level transmission routes through coral aggregate and cement matrix respectively was proposed. The main mechanism of mineral corrosion and the damage and destruction process under mitigation were reviewed. Main gaps and suggested key issues were expected to be valuable for future researches on the durability problem of seawater-coral aggregate concrete.
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Key words:
- coral reef aggregate /
- seawater /
- concrete /
- durability
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