介绍了硅粉的性能及其对混凝土拌和物、硬化混凝土性能的影响 ,并依据某工程温度观测资料 ,提出了大体积硅粉混凝土防止早期裂缝发生的相应养护措施 The performance of silica fume and its influence on the properties of concrete mix and hardened concrete were introduced. Based on the observation data of some engineering temperature, the corresponding curing measures to prevent the occurrence of early cracks were put forward