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首页 > 过刊浏览>2024年第27卷第3期 >215-222. DOI:10.3969/j.issn.1007-9629.2024.03.004
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海洋环境碱激发矿渣-石灰石粉净浆的微结构特性
作者:
作者单位:

1.青岛理工大学 土木工程学院，山东 青岛 266520;2.青岛理工大学 海洋环境混凝土技术教育部工程研究中心，山东 青岛 266520

作者简介:

王晨翠（1992—），女，河南周口人，青岛理工大学博士生.E-mail：wangchencui123@163.com

通讯作者:

金祖权（1977—），男，四川阆中人，青岛理工大学教授，博士生导师，博士.E-mail：jinzuquan@126.com

中图分类号:

TU526;

基金项目:

国家自然科学基金资助项目（52078259，52208259，52225905）；山东省自然科学基金资助项目（ZR2022QE136）；泰山学者工程专项经费资助项目（TS20190942）


Microstructure Characteristics of Alkali Activated Slag-Limestone Powder Paste in Marine Environment
Author:
  • WANG Chencui 1,2

    WANG Chencui

    School of Civil Engineering， Qingdao University of Technology， Qingdao 266520， China;Engineering Research Center of Concrete Technology under Marine Environment， Ministry of Education， Qingdao University of Technology， Qingdao 266520， China
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  • JIN Zuquan 1,2

    JIN Zuquan

    School of Civil Engineering， Qingdao University of Technology， Qingdao 266520， China;Engineering Research Center of Concrete Technology under Marine Environment， Ministry of Education， Qingdao University of Technology， Qingdao 266520， China
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  • PANG Bo 1,2

    PANG Bo

    School of Civil Engineering， Qingdao University of Technology， Qingdao 266520， China;Engineering Research Center of Concrete Technology under Marine Environment， Ministry of Education， Qingdao University of Technology， Qingdao 266520， China
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  • LIN Xiongcheng 1,2

    LIN Xiongcheng

    School of Civil Engineering， Qingdao University of Technology， Qingdao 266520， China;Engineering Research Center of Concrete Technology under Marine Environment， Ministry of Education， Qingdao University of Technology， Qingdao 266520， China
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  • JI Xunwei 1,2

    JI Xunwei

    School of Civil Engineering， Qingdao University of Technology， Qingdao 266520， China;Engineering Research Center of Concrete Technology under Marine Environment， Ministry of Education， Qingdao University of Technology， Qingdao 266520， China
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Affiliation:

1.School of Civil Engineering， Qingdao University of Technology， Qingdao 266520， China;2.Engineering Research Center of Concrete Technology under Marine Environment， Ministry of Education， Qingdao University of Technology， Qingdao 266520， China

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    摘要:

    采用X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、热重分析（TG-DTG）、扫描电子显微镜（SEM）和能谱仪（EDS），研究了不同石灰石粉掺量碱激发矿渣-石灰石粉（AAS-LS）低碳胶凝复合体系在海洋环境大气区与水下区的水化产物相组成、官能团以及微结构特性.结果表明：在海洋大气区自然碳化过程中，AAS-LS净浆新增的碳化产物主要为CaCO3的多晶型物相——亚稳态球霰石和文石；在持续的海水浸泡环境中，有Mg（OH）2和微量Ca（OH）2生成，且在浸泡12个月后，类水滑石相显著出现；石灰石粉在碱激发体系中具有潜在的化学效应.

    Abstract:

    Based on the alkali activated slag-limestone powder （AAS-LS） low carbon cementitious composite system with different limestone powder contents， X-ray diffraction（XRD）， Fourier transform infrared spectrometer（FTIR）， thermogravimetric analysis（TG-DTG） and scanning electron microscope（SEM） were used to study the phase， functional groups and microstructure of the hydration products in the atmospheric and underwater areas of marine environment. The results show that during the natural carbonization of AAS-LS pastes in the atmospheric area of marine environment， the main new carbonization products are the metastable vaterite and aragonite， which are the polycrystalline phases of calcium carbonate. Mg（OH）2 and a trace amount of Ca（OH）2 are formed in the continuous seawater immersion environment， and the hydrotalcite-like phase appears remarkably after 12 months immersion. Limestone powder have a potential chemical effect in alkali-activated system.

    表 2 AAS-LS净浆的配合比Table 2 Mix proportions of AAS-LS pastes
    表 1 GGBFS和LS的化学组成Table 1 Chemical compositions（by mass） of GGBFS and LS
    图1 GGBFS和LS的XRD图谱Fig.1 XRD patterns of GGBFS and LS
    图2 不同环境下的AAS-LS净浆的XRD图谱Fig.2 XRD patterns of AAS-LS pastes in different environments
    图3 不同环境下GGBFS、LS和AAS-LS净浆的FTIR图谱Fig.3 FTIR spectra of GGBFS， LS and AAS-LS pastes in different environments
    图4 不同海洋环境下AAS-LS净浆的TG-DTG曲线Fig.4 TG-DTG curves of AAS-LS pastes in different marine environments
    图5 不同海洋环境下AAS净浆的背散射SEM图像Fig.5 BES-SEM images of AAS pastes in different marine environments
    表 3 不同海洋环境下AAS-LS净浆外部水化产物的元素分布Table 3 Elemental distributions（by mass） of external hydration products of AAS-LS pastes in different marine environments
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王晨翠,金祖权,逄博,林雄程,吉训威.海洋环境碱激发矿渣-石灰石粉净浆的微结构特性[J].建筑材料学报,2024,27(3):215-222

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  • 收稿日期:2023-04-06
  • 最后修改日期:2023-05-15
  • 在线发布日期: 2024-04-07
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