碳纳米管水泥基复合材料耐久性及力学性能研究

Research on Durability and Mechanical Properties of Carbon Nanotube Cement Matrix Composites

为解决复杂环境下混凝土材料的耐久性以及力学性能等问题,以纳米材料作为水泥基材料的增强组份,添加碳纳米管(CNTs)制备了一种碳纳米管水泥基复合材料。研究了该水泥基复合材料的力学性能、流变性能,采用氯离子渗透深度来对该水泥基复合材料的耐久性能进行了评价。通过测试分析了不同碳纳米管掺量的水泥基复合材料的力学性能和耐久性,并通过SEM(扫描电镜)分析了碳纳米管水泥基复合材料的微观结构。结果表明CNTs能显著提高水泥基材料的力学性能以及耐久性,改善水泥基材料孔结构,同时能提高水泥基材料的抗氯离子渗透性能。

In order to solve the problems of durability and mechanical properties of concrete materials in complex environment,a carbon nanotubes cement based composite was prepared by adding nano carbon material as the reinforcing component of cement based material and adding carbon nanotubes（ CNTs）.The mechanical properties and rheological properties of the cement matrix composite were studied. The durability of the cement matrix composite was evaluated by chloride penetration depth. The mechanical properties and durability of cement-based composites with different carbon nanotubes content were tested and analyzed,The microstructure of carbon nanotube cement matrix composites was analyzed by SEM（ scanning electron microscope）. The results show that CNTs can significantly improve the mechanical properties and durability of cement-based materials, improve the pore structure of cement-based materials,and improve the resistance to chloride ion penetration of cement-based materials.