水泥体积安定性是指水泥在凝结硬化过程中体积变化是否均匀的性能。如果水泥硬化后产生不均匀的体积变化，即为体积安定性不良，安定性不良会使水泥制品或混凝土构件产生膨胀性裂缝，降低建筑物质量，甚至引起严重事故。安定性不合格的水泥应作废品处理，不能用于工程中。
... 水泥水化热 hydration heat of cement 水泥体积安定性 soundness of cement 水平底坡 horizontal slope ...
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所用材料不合格。如砂、石、集料质量不合格；除此之外，大多数是因为水泥体积膨胀率太大(安定性严重不良)。
USES material not qualified. Such as sand, stone, aggregate quality unqualified; In addition, mostly because cement volume expansion rate is too large (stability serious adverse).
研究了当水泥中混入隔热防水粉后 ，隔热防水粉对水泥标准稠度用水量、凝结时间及体积安定性的影响 。
The effect of the amount of water needed under the cements normal consistency, setting time and volume stability were investigated when heat insulation and waterproofing powder was added in cement.
本标准规定了水泥标准稠度用水量、凝结时间和由游离氧化钙造成的体积安定性的检验方法。
This standard specified the testing methods of water requirement of normal consistency, setting time as well as soundness of portland cements caused by free calcium oxide.
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