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Use of grounded iron ore tailings (GIOTs) and BaCO3 to improve sulfate resistance of pastes
Xiong, Chuansheng1,2; Li, Weihua1; Jiang, Linhua2; Wang, Wei1; Guo, Qingxiang2
2017-09-30
Source PublicationCONSTRUCTION AND BUILDING MATERIALS
Volume150Pages:66-76
SubtypeArticle
AbstractNovel methods are explored to improve sulfate resistance for cement pastes by using grounded iron ore tailings (GIOTs), BaCO3 and both of them. Experiments were conducted on a plain cement paste and six blended cement pastes with different contents of GIOTs and BaCO3. All the pastes were exposed to two kinds of external sulfate attacks (a 5 wt.% Na2SO4 solution and a 5 wt.% MgSO4 solution). The effect of additions on the sulfate resistance of pastes was assessed by compressive strength, expansion and Vickers hardness. Mercury Intrusion Porosimetry (MIP), X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive Spectrometer (EDS) were performed to clarify mechanisms of BaCO3 and GIOTs on sulfate resistance of pastes. As the results shown, both BaCO3 and GOITs can improve the capacity of pastes against to external sulfate attack. Pastes with interaction of BaCO3 and GIOTs present the highest sulfate resistance level under the both sulfate attacks. (c) 2017 Elsevier Ltd. All rights reserved.
KeywordPaste Sulfate Attack Sulfate Resistance Grounded Iron Ore Tailings Baco3
DOI10.1016/j.conbuildmat.2017.05.209
Indexed BySCI
Language英语
WOS IDWOS:000406989500007
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143107
Collection海洋腐蚀与防护研究发展中心
Affiliation1.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Hohai Univ, Coll Mech & Mat, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Xiong, Chuansheng,Li, Weihua,Jiang, Linhua,et al. Use of grounded iron ore tailings (GIOTs) and BaCO3 to improve sulfate resistance of pastes[J]. CONSTRUCTION AND BUILDING MATERIALS,2017,150:66-76.
APA Xiong, Chuansheng,Li, Weihua,Jiang, Linhua,Wang, Wei,&Guo, Qingxiang.(2017).Use of grounded iron ore tailings (GIOTs) and BaCO3 to improve sulfate resistance of pastes.CONSTRUCTION AND BUILDING MATERIALS,150,66-76.
MLA Xiong, Chuansheng,et al."Use of grounded iron ore tailings (GIOTs) and BaCO3 to improve sulfate resistance of pastes".CONSTRUCTION AND BUILDING MATERIALS 150(2017):66-76.
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