硅烷偶联剂改性偏高岭土对混凝土抗渗性的影响

Influence of Metakaolin Modified by Silence Coupling Agent on the Permeability of Concrete

将硅烷偶联剂改性后的偏高岭土应用于水泥基材料中,研究了改性偏高岭土对混凝土工作性能、力学性能和渗透性的影响。并运用压汞和SEM等方法对其影响机理进行了探讨。结果表明,硅烷偶联剂改性偏高岭土能够有效改善混凝土的工作性能,提高混凝土的强度,还可以优化混凝土的孔结构和界面过渡区结构。

The effect of silane coupling agent modified metakaolin on workability, strength and permeability of concrete was investigated. MIP and SEM were used to study the meehanism. The experimental results show that the workability of concrete significantly increases with the incorporation of modified metakaolin. Modified metakaolin mixtures have positive effect on the compressive strength of concrete, Also MMK modifies the pore structure and optimize the interracial transition zone.