珊瑚混凝土文献综述

Review of Coral Concrete Literature

摘要: 对于我国的南海海洋工程与岛礁工程，由于地理因素珊瑚混凝土天然比普通混凝土有更高优势。珊瑚混凝土材料是指将珊瑚、珊瑚砂替代普通混凝土粗细骨料形成的水泥基复合材料，自从首次用于岛礁工程以来，就引起了全世界的兴趣。本文介绍了珊瑚混凝土的原材料、力学性能、耐久性以及纤维增强珊瑚混凝土的性能。现有文献已经证明界面过渡区珊瑚混凝土的显微硬度明显高于普通混凝土，普通混凝土的抗压强度大于珊瑚混凝土，而普通混凝土比珊瑚混凝土更耐用。在珊瑚混凝土中加入纤维，可显著提高珊瑚混凝土的抗弯和劈裂抗拉强度。珊瑚混凝土的性能受到材料胶结性差的阻碍，这是由于多孔和脆弱的珊瑚聚集体造成的。因此，通过改性珊瑚骨料和创新混合方法制备高性能珊瑚混凝土，可以进一步发展海洋工程和岛礁工程的应用。

Abstract: For China’s South China Sea marine engineering and island and reef engineering, coral concrete naturally has higher advantages than ordinary concrete due to geographical factors. Coral concrete material refers to a cement-based composite material formed by replacing ordinary concrete coarse and fine aggregates with coral and coral sand. Since its first use in island and reef engineering, it has attracted worldwide interest. This article introduces the raw materials, mechanical properties, durability, and fiber-reinforced properties of coral concrete. Existing literature has proven that the microhardness of coral concrete in the interface transition zone is significantly higher than that of ordinary concrete, and the compressive strength of ordinary concrete is greater than that of coral concrete, while ordinary concrete is more durable than coral concrete. Adding fibers to coral concrete can significantly improve its bending and splitting tensile strength. The performance of coral concrete is hindered by poor material bonding, which is caused by porous and fragile coral aggregates. Therefore, the preparation of high-performance coral concrete through modified coral aggregates and innovative mixing methods can further develop the application of marine engineering and island and reef engineering.