The main products: grouting material series, series expansion agent, concrete additives series.
主要产品：灌浆料系列、膨胀剂系列、混凝土添加剂系列。
These are the main Portland cements, but variations of them are mentioned in the article on concrete additives.
这些就是主要的波特兰水泥，在“混凝土外加剂”课文中还提到了其他品种的波特兰水泥。
Effects of sulfate concentration, water-binder ratio, mineral admixtures and chemical additives on the compressive strength of concrete were studied through the grey relational analysis.
采用灰色关联理论研究了硫酸盐浓度、水胶比、矿物掺合料及外加剂等因素对混凝土抗压强度的影响。
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