activity of cement

The investigation and analysis on natural radioactivity nuclide specific activity of cement product in china

我国水泥产品天然放射性核素比活度的调查分析

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The results showed that the water requirement for normal consistency of cement increased and the early setting time shortened as well as the final setting time prolonged, the 28d activity index of cement mortar reached 82%.

研究结果表明：抛光砖粉作水泥混合材时，水泥的标准稠度用水量增加，初凝时间缩短、终凝时间略有延长；水泥28d胶砂强度活性指数可达82%；

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Influence of temperature on activity of slag cement

温度对矿渣水泥活性的影响

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The rapid detection test of portland cement strength is important to speed up the construction of civil engineering, ensure the quality of concrete and utilize accurately the activity of cement.

工程实际中应用快速测定硅酸盐水泥强度，对于加快土木建筑工程施工速度，确保混凝土质量，充分合理地利用水泥活性十分重要。

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Effects of the activity of ground-strontium slag as cement admixture were analyzed from three aspects: mortar strength value, compressive strength ratio of mortar and specific strength indicators.

分别从胶砂强度值、胶砂抗压强度比和比强度指标三方面分析磨细锶渣作为水泥掺合料的活性效应。

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A quantitative method for the measuring of MgO activity and some theoretical basis for the control of the quality of magnesium oxychloride cement are proposed in the paper.

本文为MgO活性从定性估计提高到定量测定提供了方法，同时亦为MgO生产工艺条件控制及镁质胶凝复合材料制品质量的提高提供了理论依据。

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Study on Improvement of Reaction Activity of Phosphogypsum in Cement System

提高磷石膏在水泥系统中反应活性的研究

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The optimized particle distribution of composite cement should make the packing density and the hydration activity of the cement a good match so that proper packing density will be gained and enough hydrates will be produced to fill up the voids of the cement paste.

复合水泥的最佳粒径分布应该使体系的堆积密度和水泥颗粒的水化活性相匹配，使体系获得尽可能大堆积密度，同时所产生的水化物足以使体系的原始孔隙被完全填充。

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