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在建筑业,把增加少熟料混合水泥用量,作为减少水泥生产过程中CO2排放量的主要途径。可使用具有不同物理和化学性能的各种辅助胶凝材料和混合材。但需要考虑材料性能和合理的利用途径,以便优化材料的组合,获得协同工作的效应。混合水泥的实际使用,能保证与纯波特兰水泥得到的混凝土性能相当或性能还有所改善。从实验室试验研究结果可观察到:使用混合水泥可使混凝土的和易性得到改善、降低水化热、提高长期强度,并改善制品的耐久性。在实践中要获得这些有益的性能,必须保证采用适当的现场操作规范,例如对结构进行适当养护。
In the construction industry, increasing the amount of mixed clinker less cement used as a major way to reduce CO2 emissions from cement production. A wide variety of auxiliary cementitious materials and blends with different physical and chemical properties can be used. However, the need to consider the material properties and rational use of ways to optimize the combination of materials to obtain the effect of collaborative work. The practical use of blended cements ensures that the properties of concrete obtained with pure Portland cement are comparable or improved. It is observed from the results of laboratory tests that the use of blended cements improves the workability of concrete, reduces heat of hydration, increases long-term strength, and improves product durability. In practice, to achieve these beneficial properties, it is imperative to ensure that appropriate site practices are in place, such as appropriate maintenance of the structure.