游离氧化钙对水泥性能的影响探析 摘要：游离氧化钙；水泥；安定性；强度 Abstract: contain harmful material such as free calcium oxide in cement, if the material content is too much, when mixing and pouring concrete, wrapped in vitreous membrane on the surface of the free lime has not completely broken, the inside of the calcium oxide particles and water role fully, after concrete hardening, moisture from the atmosphere into concr