Abstract Belite cements, BCs, containing mainly belite, alite and calcium aluminates, are currently used as low heat cements. These binders produce high amounts of C–S–H gel and have very good durability properties which are reviewed. Additional advantages include: (i) lower limestone demand, with lower associated CO2 emissions; (ii) lower energy demand; (iii) lower kiln operating temperature, which means lowering CO2 and NOx emissions from fuel burning; and (iv) lower temperature increase at early hydration age. However, early-age strength developments are not competitive with those of Portland cements. Hence, to improve their early-age strength developments is a research priority known as activation. This enhancement can be attained by three compatible approaches: (i) chemical, (ii) physical; and (iii) admixture activations. The current research status for BCs activation is reviewed including: cost-effective element substitutions to stabilize high-temperature forms; fast cooling, milling and mild temperature hydration as physical activation; and the use of C–S–H seeds as admixture activation. After discussion of the resulting microstructures, a research outlook is exercised.

中文翻译：

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贝利特水泥及其活化

摘要 贝利特水泥，BCs，主要含有贝利特、阿利特和铝酸钙，目前用作低热水泥。这些粘合剂会产生大量的 C-S-H 凝胶，并具有非常好的耐久性能。其他优势包括：(i) 石灰石需求较低，相关的二氧化碳排放量较低；(ii) 能源需求减少；(iii) 降低窑炉运行温度，这意味着降低燃料燃烧产生的 CO2 和 NOx 排放；(iv) 在早期水合年龄较低的温度升高。然而，早期强度的发展与波特兰水泥的发展相比没有竞争力。因此，提高他们早期力量的发展是一项研究重点，称为激活。这种增强可以通过三种兼容的方法来实现：(i) 化学，(ii) 物理；(iii) 混合物活化。BCs 活化的当前研究现状进行了综述，包括：具有成本效益的元素替代以稳定高温形式；作为物理活化的快速冷却、研磨和温和温度水合；以及使用 C-S-H 种子作为混合物活化。在讨论了所得的微观结构之后，进行了研究展望。