碳酸钙水泥: 一种碳捕获、利用和储存（CCUS）技术

陈 瑞恩, 哈吉 斯·, 米格 尔·
美国土木工程系

摘要

本研究利用含有二氧化碳的烟气和高钙工业固体废弃物作为原料，开发了一种新型碳酸钙水泥系统。该系统模 拟了自然发生的二氧化碳向生物或地质碳酸钙矿床的矿化过程。碳酸钙水泥反应是基于从可变质的瓦特石到文石的多 态性转化，可以达到>40MPa 的抗压强度。由于其独特的性能，碳酸钙水泥非常适合作为建筑材料，其可利用其在高温 下的快速固化和较低的密度成为制造工厂的竞争优势，而适合的应用实例是轻质纤维水泥板和加气混凝土。本文所描 述的新水泥系统是一种可持续性的，保护环境的替代水泥，它是负碳性的，这意味着在其制造过程中捕获的二氧化碳 比排放的多。

关键词

水泥；碳酸钙；瓦特莱特

参考

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