The analysis results of reaction between calcined kaolin and saturation Ca(OH)2solution and XRD results of reaction products of calcined kaolin and cement indicated that calcined kaolin has a high volcanic ash active.

• 通过对煅烧高岭土与饱和石灰水的反应及煅烧高岭土与水泥混合后的XRD分析，确认煅烧高岭土具有较好的火山灰活性。