海洋骨料混凝土材料与结构性能研究进展  

A Review of Material and Structural Properties of Marine Aggregate Concrete

作　　者：杨树桐[1] 孙忠科 蒋济同[1] 范国玺[1] 董坤 杨天戈 Yang Shutong;Sun Zhongke;Jiang Jitong;Fan Guoxi;Dong Kun;Yang Tiange(College of Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2023年第10期11-19,共9页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(52178259)资助。

摘　　要：针对陆地砂石资源日益匮乏的现状,远离陆地的深远海岛礁建设需要利用海水、海砂和珊瑚等海洋资源制备混凝土,以实现就地取材从而避免远途运输并降低工程造价。本文主要介绍了“海洋骨料混凝土”的概念以及国内外关于海洋骨料混凝土所做的研究工作,包括材料的工作、力学、抗氯离子渗透、抗冻融、抗收缩和断裂性能。结果表明,海洋骨料混凝土的力学以及耐久性能与普通混凝土相当。随后,介绍了海洋骨料混凝土与纤维增强复合材料的黏结性能以及结构构件的抗压和抗弯性能方面的研究进展,纤维增强复合材料可以制作成筋材、管材、片材以及编织网用于海洋骨料混凝土结构中,使得其抗压与抗弯性能明显提升,但海洋环境下混凝土的碱性对纤维增强复合材料的耐久性影响显著。Owing to the shortage of land resources,the construction of remote islands and reefs far away from the land has to use ocean resources such as seawater,sea sand,corals,etc.,in mixing concrete.If so,raw materials can be obtained locally,long-distance transportation will be avoided,and project costs may be reduced.This paper mainly introduced the concept of“marine aggregate concrete”and the research on marine aggregate concrete at home and abroad,including the workability,mechanical property,resistance to chloride ion permeability,freeze-thaw cycles,shrinkage,and fracture properties of this material.The results showed that the mechanical and durability properties of marine aggregate concrete were comparable to those of ordinary concrete.Subsequently,the research progress on the bond performance of marine aggregate concrete to fiber-reinforced polymer(FRP)and the compressive and flexural properties of structural members was presented.FRP can be made into bars,tubes,sheets and textiles in marine aggregate concrete structures,and thus,the structural compressive and flexural performance was significantly improved.However,the alkali characteristics of concrete in ocean environment apparently affected the durability of FRP.

关 键 词：海水海砂 珊瑚骨料 纤维增强复合材料 力学性能 耐久性能 

分 类 号：TU528[建筑科学—建筑技术科学]