EFFECT OF K2O AND MgO ON THE FORMATION AND HYDRATION ACTIVITY OF Ba-BEARING CALCIUM SULFOALUMINATE
文献类型：期刊论文
| 作者 | Shen Weibo1; Zhang Yun1; Gong Chenchen2; Xin Jibao2; Gong, CC (reprint author), Univ Jinan, Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China. |
| 刊名 | CERAMICS-SILIKATY
 |
| 出版日期 | 2017 |
| 卷号 | 61期号:1页码:6-13 |
| 关键词 | Ba-bearing Calcium Sulfoaluminate Mgo K2o Formation Hydration |
| ISSN号 | 0862-5468 |
| DOI | 10.13168/cs.2016.0053 |
| 文献子类 | Article |
| 英文摘要 | Ba-bearing calcium sulfoaluminate (C(2.75)B(1.25)A(3)$) is characterized by rapid hydration rate and volume stability, as a constituent of the low-CO2 alternative clinker. In this paper, the effect of K2O and MgO on the formation and hydration activity of Ba-bearing calcium sulfoaluminate was studied. Results show that according to DSC-TA curves 0.5-0.8 wt.% K2O can reduce the decomposition temperature of CaCO3 about 10-23 degrees C and the decomposition temperature of C(2.75)B(1.25)A(3)$ about 10-16 degrees C. And 4.0+/-5.0 wt.% MgO can reduce the decomposition temperature of CaCO3 about 10-23 degrees C and the decomposition temperature of C(2.75)B(1.25)A(3)$ about 10-16 degrees C.The effect of MgO on hydration activity of C(2.75)B(1.25)A(3)$ is a little better than that of K2O. This may be due to the reason that MgO, especially at the optimum dosage of 3.0 similar to 4.0 wt.%, favors the formation of C2.75B1.25A3$ mineral with little impurities such as BaAlO4 which is obtained from the analysis of XRD. From the released hydration heat rate and cumulative heat release results it is found that 0.5-1.1 wt.% K2O and 2.0-4.0 wt.% MgO promote the hydration of C(2.75)B(1.25)A(3)$ because of the lattice distortion and defects. Appropriate amount of MgO (2.0-4.0 wt.%) and K2O (0.8 wt.%) can improve the compressive strength and ensure it steady growth with the increase of curing ages. But 1.4 wt.% K2O and 5.0 wt.% MgO caused BaSO4 and BaAlO4 to extend the hydration of C(2.75)B(1.25)A(3)$ and reduce the compressive strengths at both early ages and late ages. |
| 学科主题 | Materials Science |
| URL标识 | 查看原文 |
| 出版地 | PRAGUE 6 |
| 语种 | 英语 |
| WOS记录号 | WOS:000397378500002 |
| 出版者 | UNIV CHEMISTRY & TECHNOLOGY, PRAGUE |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/8065]  |
| 专题 | 水保所科研产出--SCI_2017--SCI |
| 通讯作者 | Gong, CC (reprint author), Univ Jinan, Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China. |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 2.Univ Jinan, Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen Weibo,Zhang Yun,Gong Chenchen,et al. EFFECT OF K2O AND MgO ON THE FORMATION AND HYDRATION ACTIVITY OF Ba-BEARING CALCIUM SULFOALUMINATE[J]. CERAMICS-SILIKATY,2017,61(1):6-13. |
| APA | Shen Weibo,Zhang Yun,Gong Chenchen,Xin Jibao,&Gong, CC .(2017).EFFECT OF K2O AND MgO ON THE FORMATION AND HYDRATION ACTIVITY OF Ba-BEARING CALCIUM SULFOALUMINATE.CERAMICS-SILIKATY,61(1),6-13. |
| MLA | Shen Weibo,et al."EFFECT OF K2O AND MgO ON THE FORMATION AND HYDRATION ACTIVITY OF Ba-BEARING CALCIUM SULFOALUMINATE".CERAMICS-SILIKATY 61.1(2017):6-13. |
入库方式： OAI收割
来源：水土保持研究所
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