强动载作用下海水海砂混凝土应用研究进展

摘要/Abstract

摘要： 岛礁建设工程对于维护我国合法权益有着重要意义,从大陆运送混凝土原材料到岛礁费时费力,且不经济,因此利用岛礁已有资源制成海水海砂混凝土成为岛礁建设工程中重要的建筑材料。本文系统介绍了海水海砂混凝土材料静动态力学性能、新型复合纤维材料(FRP)筋-海水海砂混凝土组合结构力学性能方面的研究现状,并指出应对海水海砂混凝土的动态力学性能作进一步的研究。进一步总结得到:海水海砂混凝土具有较高的早期强度且最终强度与普通混凝土相当,合理掺量纤维的加入可以明显改善海水海砂混凝土的力学性能,海水海砂混凝土拥有更为明显的应变率效应,FRP筋-海水海砂混凝土组合结构以其良好的耐腐蚀性可以更好地应用于广阔的海洋环境,是岛礁防护结构的重要选择。当前国际形势较为复杂,岛礁建设工程会遭受爆炸、侵彻等极端荷载的作用,因此,开展FRP筋-海水海砂混凝土组合结构抗冲击、抗爆性能研究是下一步的研究方向。

关键词: 海水海砂混凝土, 力学性能, FRP筋, 抗爆性能

Abstract: Constructions of islands and reefs are of great significance to safeguard rights and interests of our country. However, it is time-consuming, laborious and uneconomical to transport concrete raw materials from the mainland to islands and reefs. Therefore, sea sand concrete made from the existing resources on islands and reefs has become an important building material in the construction of islands and reefs. In this paper, the research on static and dynamic mechanical properties of sea sand concrete materials are summarized and the mechanical properties of fiber reinforced polymer (FRP) bar-sea sand concrete structure are systematically introduced. Meanwhile, it is pointed out that the dynamic mechanical properties of sea sand concrete should be further studied. The recent researches show that sea sand concrete has higher early strength and the final strength is equivalent to ordinary concrete. Reasonable fiber addition significantly improve the mechanical properties of sea sand concrete. Strain rate effect of sea sand concrete is obvious. FRP bar-sea sand concrete structure with its great corrosion resistance can be better used in a wide range of marine environment and it is an important choice for protective structures. The current international situation is more complex, and the reef construction projects may be subject to explosion, penetration and other extreme loads. It can be concluded that the researches on dynamic mechanical properties of sea sand concrete need to be further strengthened. Therefore, the further researches on the impact resistance and anti-explosion performance of FRP bar-sea sand concrete composite structure are of great significance.

Key words: sea sand concrete, mechanical property, FRP bar, anti-explosion performance

中图分类号:

TU528

杨成林, 徐迎, 洪建, 孔新立. 强动载作用下海水海砂混凝土应用研究进展[J]. 硅酸盐通报, 2021, 40(2): 415-422.

YANG Chenglin, XU Ying, HONG Jian, KONG Xinli. Research Progress on Application of Sea Sand Concrete under Strong Dynamic Load[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(2): 415-422.

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