Effects of H3PO4 and Ca(H2PO4)(2) on mechanical properties and water resistance of thermally decomposed magnesium oxychloride cement
文献类型：期刊论文
| 作者 | Wen Jing1,2 ; Yu Hong-fa1,3,4; Li Ying1,2; Wu Cheng-you1,2; Dong Jin-mei1,2; Zheng Li-na1,2
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| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
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| 出版日期 | 2013-12-01 |
| 卷号 | 20期号:12页码:3729-3735 |
| 关键词 | Thermally Decomposed Magnesium Oxychloride Cement (Tdmoc) H3po4 Ca(H2po4)(2) Strength Water Resistance Hydration Heat |
| 文献子类 | Article |
| 英文摘要 | The effects of H3PO4 and Ca(H2PO4)(2) on compressive strength, water resistance, hydration process of thermally decomposed magnesium oxychloride cement (TDMOC) pastes were studied. The mineral composition, hydration products and hydration heat release were analyzed by XRD, FT-IR, SEM and TAM air isothermal calorimeter, etc. After being modified by H3PO4 and Ca(H2PO4)(2), the properties of the TDMOC are improved obviously. The compressive strength increases from 14.8 MPa to 48.1 MPa and 37.1 MPa, respectively. The strength retention coefficient (K-n) increases from 0.38 to 0.99 and 0.94, respectively. The 24 h hydration heat release decreases by 10% and 4% and the time of hydration peak appearing is delayed from 1 h to about 10 h. The XRD, FT-IR and SEM results show that the main composition is 5Mg(OH)(2)center dot MgCl2 center dot 8H(2)O in the modified TDMOC pastes. The possible mechanism for the strength enhancement was discussed. The purposes are to extend the potential applications of the salt lake magnesium resources and to improve the mechanical properties of TDMOC. |
| WOS关键词 | TEMPERATURES ; HYDRATION ; CONCRETE |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000331960900044 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/4420]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 青海盐湖研究所_盐湖资源与化学实验室 中国科学院青海盐湖研究所 |
| 作者单位 | 1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Qinghai Univ, Dept Civil Engn, Xining 810016, Peoples R China 4.Nanjing Univ Aeronaut & Astronaut, Dept Civil Engn, Nanjing 210016, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen Jing,Yu Hong-fa,Li Ying,et al. Effects of H3PO4 and Ca(H2PO4)(2) on mechanical properties and water resistance of thermally decomposed magnesium oxychloride cement[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2013,20(12):3729-3735. |
| APA | Wen Jing,Yu Hong-fa,Li Ying,Wu Cheng-you,Dong Jin-mei,&Zheng Li-na.(2013).Effects of H3PO4 and Ca(H2PO4)(2) on mechanical properties and water resistance of thermally decomposed magnesium oxychloride cement.JOURNAL OF CENTRAL SOUTH UNIVERSITY,20(12),3729-3735. |
| MLA | Wen Jing,et al."Effects of H3PO4 and Ca(H2PO4)(2) on mechanical properties and water resistance of thermally decomposed magnesium oxychloride cement".JOURNAL OF CENTRAL SOUTH UNIVERSITY 20.12(2013):3729-3735. |
入库方式： OAI收割
来源：青海盐湖研究所
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