项目名称： 基于CFRP电化学特性的新型海砂混凝土耐久性保障策略研究

项目编号： No.51478269

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 朱继华

作者单位： 深圳大学

项目金额： 80万元

中文摘要： CFRP的电化学特性使其可以作为混凝土外加电流阴极保护系统的辅助阳极材料。本项目针对海砂混凝土结构的耐久性和安全性问题，利用CFRP 优异的电化学性能和力学性能，提出采用CFRP 为辅助阳极的新型钢筋混凝土结构外加电流阴极保护方法，进而建立阴极保护与结构性能增强有机结合的新型海砂混凝土耐久性保障策略。项目研究基于外加保护电流、长期荷载和海砂混凝土工作环境等多场耦合作用，探讨CFRP的长期电化学性能和力学性能退化规律，并开展CFRP/混凝土和钢筋/混凝土界面在多场作用下的性能研究；通过试验研究和数值模拟，建立完整的阴极保护与结构加固一体化设计方法，实现海砂混凝土材料性能和力学性能双重保障。本项目研究意义包括：（1）为钢筋混凝土外加电流阴极保护技术提供一种经济的辅助阳极材料；（2）为建筑工程领域提供一种新型混凝土耐久性保障策略；（3）提供一种安全且经济的海砂混凝土应用技术。

中文关键词： 海砂；阴极保护；钢筋锈蚀；耐久性；碳纤维增强复合材料

英文摘要： The electrochemical properties of CFRP enables CFRP materials can be used as an auxiliary anode of cathodic protection system. Based on the excellent electrochemical and mechanical properties of CFRP, this project aims at the durability and safety of sea sand reinforced concrete structure, and establishes a new impressed current cathodic protection method for reinforced concrete structure by using CFRP as the auxiliary anode. Furthermore, the novel strategy for the protection of sea sand concrete durability is proposed by combining cathodic protection and structure strengthening. Therefore, based on the coupling effects of protection current, long-term load and sand concrete work environment, this project investigates the long-term electrochemical properties and deterioration of mechanical properties of CFRP. The behavior of CFRP / concrete and steel / concrete interfaces are also studied. A complete integrated design approach is proposed to achieve the material and mechanical property protection of sea sand concrete. The significance of the project include: (1) To provide for a novel economical auxiliary anode material for the impressed current cathodic protection technology of reinforced concrete. (2) To provide a new protection strategy for the durability of concrete construction. (3) To provide a safe and economical technology for application of sea sand in civil engineering.

英文关键词： Sea sand;Cathodic protection;Steel corrosion;Durability;CFRP