大掺量粉煤灰混凝土炭化为什么快
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粉煤灰和矿渣影响混凝土碳化的因素及建议_深度 - 搜狐
2020年12月11日 胡建军等通过自然碳化和快速碳化实验测试矿渣粉掺量与混凝土碳化深度的关系发现当矿渣掺量为 30% 时，抗碳化性能相对最好，随着矿渣掺量的增大，碳化深 1.活性效应：在常温下，由于粉煤灰的水化反应比水泥慢，被粉煤灰取代的那部分水泥的早期强度得不到补偿，所以混凝土早期强度随粉煤灰掺量的增加而降低。 随着时间的推移， 详论粉煤灰在混凝土中的作用其机理分析 - 知乎粉煤灰对混凝土强度贡献的原因大致有三个：①.减少用水量；②.增大 胶凝材料 含量；③.长期火山灰反应。 4.降低 混凝土水化热 。 5.（质量良好的粉煤灰）改善抗冻融耐久性。 粉煤灰在混凝土中有什么作用和副作用? - 知乎
混凝土中粉煤灰掺量越大越好吗？ - 百家号
2022年3月4日 大掺量 粉煤灰混凝土 不仅强度发展效果良好，而且各种耐久性能也十分优异。 由于能够明显降低水化温升，也大大减小了混凝土早期出现开裂的危险，可以说是一 2017年8月22日 具体分析如下： （1）裂缝的发生及发展主要发生在1d 前,24h 后几乎没什么变化, 这是因为水化热大多集中在早期释放, 所以大掺量粉煤灰混凝土的裂缝问题应在 粉煤灰掺量的学问 - 搜狐当掺 加粉煤灰时, 由于 它比水泥轻,等重量替代水泥时可以增大 胶凝材料的体积,所以可以使混凝土的水 胶比降低。 (1)与水泥相比,粉煤灰受温度影响更 为显著,即温度升高时它的水化 大掺量粉煤灰在混凝土中的应用 - 百度文库2022年4月22日 随着时间的推移，粉煤灰中的活性成分SiO2和A12O3与水泥水化生成的Ca(OH)2发生反应，生成具有胶凝性的水化产物，降低了混凝土中的液相碱度，进一步 粉煤灰的三种形态效应 - 知乎q1：泵送混凝土为什么要掺入粉煤灰？ A：由于粉煤灰的构造是球状颗粒物，粒度比水泥还细，它还有着一定的活力，把它掺到水泥里能替代一部分水泥，且能提升混凝土拌和物的 粉煤灰混凝土施工常见问答！ - 知乎
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