偏高岭土与矿渣复掺对混凝土性能改善的研究

Study on the performance improvement of concrete mixed with metakaolin and slag

通过偏高岭土与矿渣的不同复掺比例研究了偏高岭土与矿渣复掺对混凝土强度和耐久性能的影响。结果表明:往矿渣混凝土中掺入偏高岭土后,混凝土的强度和耐久性能均有所提高,矿渣和偏高岭土在胶凝材料中的掺量越大,混凝土的氯离子导电量越小。矿渣和水泥的优化比例为3∶7左右,这样既保证了混凝土的强度,又使得混凝土具有优越的抗氯离子扩散性能。

The effect to the concrete strength and durability of different proportions of metakaolin and slag mixed with concrete was stuelied. The results show that：while slag concrete mixed with metakaolin,concrete strength and durability are improved,the content of slag and metakaolin in cementitious materials larger, concrete chloride ion conductivity smaller,the optimized ratio of slag and cement is 3：7, this ensures the strength of concrete, also makes concrete has superior resistance to chloride ion diffusion properties.