以下为句子列表：
英文: As a kind of cement retarder, normal setting time and good effect for mechanical properties and soundness of cement can be got when adding desulfurization gypsum in cement, so it can used instead of natural gypsum to produce cement entirely, coal gangue i
中文: 脱硫石膏作水泥缓凝剂时，水泥的安定性、凝结时间正常，可改善水泥的力学性能，完全可替代天然石膏；活化后的煤矸石和脱硫煤灰具有较好的活性，用作水泥混合材可增加水泥产量、降低生产成本，具有良好的经济和环境效益。
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英文: The activatory coal gangue powder (ACGP), ground cement clinker and natural gypsum are mixed by different ratios to prepare blended cement specimens, and its mortar compressive strength performance, water usage for standard consistency, and flowability of
中文: 摘要将经燃烧等过程进行活化处理的煤矸石细粉与磨至一定比表面积的水泥熟料及天然生石膏混合均匀，制成了活化谋矸石粉掺量比例不同的多组混合水泥，并对其胶砂强度性能、标准稠度用水量、胶砂流动度进行了实验检测。
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英文: The result shows that blended cement mixed with activatory coal gangue powder has high compressive strength, however, with the increase of the admixture of coal gangue powder, flowability of blended cement paste become worse, and the setting time is not o
中文: 结果表明，掺入经活化处理的煤矸石粉配制的混合水泥具有较好的强度性能；随掺量增加，水泥浆体的流变性能变差，但对凝结时间并无明显影响。
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英文: Screening Reports of Ecology Repair Plant in North Coal Gangue Mountain
中文: 北方煤矸石山生态修复植物筛选初报
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英文: Vegetation Restoration Technologies in the Coal Gangue Waste Lands in Sandy Areas of Northern Shaanxi
中文: 陕北沙区煤矸石废弃地的植被恢复技术研究
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