贝利特-叶利镁橄榄石-钙硼石体系中水泥的水化与性能

Hydration and Properties of Cement in the Belite-Ye'elimite-Ternesite System.

作者信息

Wang Guoling, Huang Xiaofei, Wu Yufeng, Zhang Qian, Ma Suhua, Li Weifeng

机构信息

College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.

出版信息

Materials (Basel). 2022 Apr 11;15(8):2792. doi: 10.3390/ma15082792.

DOI:10.3390/ma15082792

PMID:35454485

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9029258/

Abstract

Energy consumption and carbon emissions are lower in the production of belite-ye'elimite-ternesite (CS-CA$-CS$, BYT) clinker than Portland cement (PC) clinker. BYT cement can combine the early strength of CSA cements and the durability of belite cements. X-ray diffraction, mercury intrusion porosimetry, isothermal conduction calorimetry and scanning electron microscope were conducted to investigate the hydration process of BYT cement. The hydration products of BYT cement include mainly ettringite, strätlingite and some amorphous AH (aluminum hydroxide). Ternesite did prove an early reactivity in BYT cement. The reaction of ternesite with AH occurs on the surface of ternesite. Ternesite delays the second heat flow peak of ye'elimite. The strength of BYT cement containing 10% ternesite in the prepared clinker exceeds that of other cement at all ages.

摘要

贝利特-硫铝酸钙-钙黄长石（CS-CA$-CS$，BYT）熟料生产中的能源消耗和碳排放低于波特兰水泥（PC）熟料。BYT水泥可以兼具硫铝酸盐水泥的早期强度和贝利特水泥的耐久性。采用X射线衍射、压汞法、等温传导量热法和扫描电子显微镜对BYT水泥的水化过程进行了研究。BYT水泥的水化产物主要包括钙矾石、硅灰石和一些无定形的AH（氢氧化铝）。钙黄长石在BYT水泥中确实表现出早期反应活性。钙黄长石与AH的反应发生在钙黄长石表面。钙黄长石延迟了硫铝酸钙的第二个热流峰。在制备的熟料中含有10%钙黄长石的BYT水泥在所有龄期的强度均超过其他水泥。