青藏高原干热条件下粉煤灰掺量对混凝土强度的影响

Influence of Flyash Amount on the Strength of Concrete in Hot-dry Condition in Qinghai-Tibet Plateau

为探讨青藏高原干热条件下胶凝材料中粉煤灰掺量对混凝土强度的影响,在室内模拟青藏高原干热环境,分析C60、C30混凝土配制过程中,粉煤灰掺量对混凝土强度的影响.干热养护与标准养护的对比试验结果表明,C60混凝土粉煤灰的掺量以25%为宜,C30混凝土粉煤灰的掺量以33%为宜.指出在施工时应做好混凝土的养护工作,以确保混凝土的设计强度.

In order to research the influence of flyash amount on concrete strength in hot-dry condition in Qinghai-Tibet plateau, the indoor test condition simulating hot-dry environment in Qinghai-Tibet plateau has been made. The influence of flyash amount on concrete strength in the preparation of C30, C60 concrete has been studied. The comparative tests between the standard curing environment and hot-dry curing environment show that 25% flyash is suitable for C60 concrete and 33% flyash for C30 and curing work must be done for ensuring the concrete strength in construction stage.