产地来源和陈化方式对石灰结构和性能的影响

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (7): 2361-2371.

所属专题：水泥混凝土

产地来源和陈化方式对石灰结构和性能的影响

王琴^1,2, 张瑞峰^1,2, 郭志翔^1,2, 齐国栋³, 朱宇华⁴, 汤羽扬⁵

1.北京建筑大学土木与交通工程学院,建筑结构与环境修复功能材料北京市重点实验室,北京 100044;
2.北京建筑大学土木与交通工程学院,北京 100044;
3.中国矿业大学(北京)化学与环境工程学院,北京 100083;
4.北京建筑大学建筑与城市规划学院,北京 100044;
5.北京建筑大学建筑遗产研究院,北京 100044

收稿日期:2023-03-02 修订日期:2023-04-22 出版日期:2023-07-15 发布日期:2023-07-25
作者简介:王琴(1979—),女,博士,副教授。主要从事石灰、水泥等建筑材料的研究。E-mail:wangqin@bucea.edu.cn
基金资助:
国家自然科学基金(52278237)

Influences of Origin and Aging Ways on Structure and Properties of Lime

WANG Qin^1,2, ZHANG Ruifeng^1,2, GUO Zhixiang^1,2, QI Guodong³, ZHU Yuhua⁴, TANG Yuyang⁵

1. Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
3. School of Chemical & Environmental Engineering, China University of Mining & Technology, Beijing, Beijing 100083, China;
4. School of Architecture and Urban Planning, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
5. Academy of Architectural Heritage, Beijing University of Civil Engineering and Architecture, Beijing 100044, China

Received:2023-03-02 Revised:2023-04-22 Online:2023-07-15 Published:2023-07-25

摘要/Abstract

摘要： 本文采用X射线荧光分析(XRF)、X射线衍射分析(XRD)、热重分析(TG)、压汞测试(MIP)和场发射扫描电子显微镜(SEM)等手段,研究了产地来源和陈化方式对石灰成分、结构和宏观性能的影响。结果表明:不同产地石灰中Ca和Mg元素的含量不同。石灰在陈化过程中,陈化方式、产地来源和陈化时间均会影响氢氧化钙的晶粒尺寸和晶体形貌,氢氧化钙的晶粒尺寸均随着陈化时间的延长而减小;浸水陈化效果优于密封陈化和天然陈化效果;产自南石楼地区的石灰采用浸水陈化时所制备的石灰晶粒尺寸更小,活性更高,氢氧化钙含量更高,在成型硬化和养护后可以形成更加致密的微结构,且具有更优异的力学性能。本研究将为古建修缮用石灰的制备和工程应用提供指导。

关键词: 产地来源, 陈化方式, 石灰, 组成, 微观结构, 力学性能

Abstract: The effects of origin and aging ways on the composition, structure and macroscopic properties of lime were studied by X-ray fluorescence analysis (XRF), X-ray diffraction analysis (XRD), thermogravimetric analysis (TG), mercury intrusion test (MIP) and field emission scanning electron microscopy (SEM). The results show that the content of Ca and Mg in lime from different origin is also different. In the process of lime aging, aging way, origin and aging time all affect the grain size and crystal morphology of calcium hydroxide, and the grain size decreases with the increase of aging time. The effect of immersion aging is better than that of sealed aging and natural aging. Lime produced by immersion aging in Nanshilou area has a smaller grain size, higher activity and higher calcium hydroxide content by immersion aging preparation. More compact microstructure can be formed after forming hardening and curing, and it has better mechanical properties. This study will guide the preparation and engineering application of lime for ancient building repair.

Key words: origin, aging way, lime, composition, microstructure, mechanical performance

中图分类号:

TU526

王琴, 张瑞峰, 郭志翔, 齐国栋, 朱宇华, 汤羽扬. 产地来源和陈化方式对石灰结构和性能的影响[J]. 硅酸盐通报, 2023, 42(7): 2361-2371.

WANG Qin, ZHANG Ruifeng, GUO Zhixiang, QI Guodong, ZHU Yuhua, TANG Yuyang. Influences of Origin and Aging Ways on Structure and Properties of Lime[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(7): 2361-2371.

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产地来源和陈化方式对石灰结构和性能的影响

Influences of Origin and Aging Ways on Structure and Properties of Lime

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