中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 武汉岩土力学研究所
  3. 中科院武汉岩土力学所
Long-term performance of ferrite-rich calcium sulfoaluminate cement-based paste under seawater corrosion

文献类型：期刊论文

作者Qiu, Xin1,2; Chen, Weizhong1; Yuan, Jingqiang1; Tan, Xianjun1; Liu, Kai3; Wu, Guojun1; Tian, Hongming1
刊名CONSTRUCTION AND BUILDING MATERIALS
出版日期2023-05-09
卷号377页码:15
关键词Ferrite-rich calcium sulfoaluminate cement Seawater corrosion Long -term performance Micro -structure Mechanical property
ISSN号0950-0618
DOI10.1016/j.conbuildmat.2023.131056
英文摘要Ferrite-rich calcium sulfoaluminate cement (FCSA) is widely used due to its characteristics of short setting time, high early strength, slight expansion and low CO2 emissions. In order to further study the long-term performance of FCSA under seawater environment, this study prepared a quaternary blend based on FCSA clinker, Ordinary Portland cement (OPC), anhydrite and limestone. Meanwhile, artificial seawater solutions were prepared by dissolving granular NaCl, MgSO4 and MgCl2 in deionized water. The long-term performance evolution of physical and mechanical characteristics such as mechanical properties, chloride content, hydration products and microstructure property were investigated through uniaxial compression test, X-ray diffraction (XRD), thermogravimetric analysis (TG), mercury intrusion porosimeter (MIP) and other test methods by considering different salt concentrations of seawater and corrosion age. The results showed that the mass and expansion rate of corroded specimens increased logarithmically with the corrosion age. The quaternary blend could resist sulfate corrosion by absorbing it in seawater solution and promote the generation of ettringite. In addition, Friedel's salt was mainly generated by ion exchange between chloride and sulfate of monosulfoaluminate. The uniaxial compressive strength of all specimens showed a consistency of increasing first and then decreasing with corrosion age. Meanwhile, the corrosion resistance coefficient K of the specimens varied between 0.95 and 1.30 with the salt concentrations of seawater increasing. According to the mechanical behavior and micro-structure characteristics of the new quaternary blend, it's indicated that the new cement-based material has adequate ability to resist seawater salt corrosion and has an excellent long-term stable performance.
资助项目National Natural Science Foundation of China[51991392] ; National Natural Science Foundation of China[42293353] ; National Natural Science Foundation of China[42293355] ; National Natural Science Foundation of China[52179116] ; National Natural Science Foundation of China[52179113] ; National Key R amp; D Program of China[2021YFC3100805] ; National Key R amp; D Program of China[2021YFC3100802] ; Key Deployment Project of Chinese Academy of Sciences[ZDRW-ZS-2021-3] ; Qingdao Geo-Engineering Exploration Institute and Key laboratory of Urban Geology ; Underground Space Resources, Shandong Provincial Bureau of Geology and Mineral Resources[2019-QDDZYKF05]
WOS研究方向Construction & Building Technology ; Engineering ; Materials Science
语种英语
WOS记录号WOS:001030001400001
出版者ELSEVIER SCI LTD
源URL[http://119.78.100.198/handle/2S6PX9GI/39029]  
专题中科院武汉岩土力学所
通讯作者Yuan, Jingqiang
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qingdao Geoengn Survering Inst, Qingdao 26600, Peoples R China
推荐引用方式
GB/T 7714		 Qiu, Xin,Chen, Weizhong,Yuan, Jingqiang,et al. Long-term performance of ferrite-rich calcium sulfoaluminate cement-based paste under seawater corrosion[J]. CONSTRUCTION AND BUILDING MATERIALS,2023,377:15.
APA Qiu, Xin.,Chen, Weizhong.,Yuan, Jingqiang.,Tan, Xianjun.,Liu, Kai.,...&Tian, Hongming.(2023).Long-term performance of ferrite-rich calcium sulfoaluminate cement-based paste under seawater corrosion.CONSTRUCTION AND BUILDING MATERIALS,377,15.
MLA Qiu, Xin,et al."Long-term performance of ferrite-rich calcium sulfoaluminate cement-based paste under seawater corrosion".CONSTRUCTION AND BUILDING MATERIALS 377(2023):15.

入库方式： OAI收割

来源：武汉岩土力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。