| 普通硅酸盐水泥改性脱硫建筑石膏耐水性能 |
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| 引用本文： | 郭会师,王庆佩,张果,李文凤,孟二超,陈文亮,惠守华,周立明. 普通硅酸盐水泥改性脱硫建筑石膏耐水性能[J]. 硅酸盐通报, 2021, 40(7): 2288-2295 |
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| 作者姓名： | 郭会师 王庆佩 张果 李文凤 孟二超 陈文亮 惠守华 周立明 |
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| 作者单位： | 郑州轻工业大学材料与化学工程学院,郑州 450001;河南工业大学材料科学与工程学院,郑州 450001 |
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| 基金项目： | 国家自然科学基金(51802290,21671178);河南省重点科技攻关项目(182102210613,172102210223);郑州轻工业大学博士科研基金(2017BSJJ041) |
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| 摘 要： | 石膏的耐水性能差限制了其在建筑领域的应用,本文以郑州地区脱硫建筑石膏为主要原料,普通硅酸盐水泥为辅料制备了耐水性能好且成本较低的改性脱硫建筑石膏,系统研究了水泥用量对样品水化后的物理性能、物相组成和显微结构的影响.结果表明,随着水泥掺量的增加,其水化后生成的钙钒石(AFt)、氢氧化钙(CH)和水化硅酸钙(C-S-H)凝...
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| 关 键 词： | 脱硫建筑石膏 硅酸盐水泥 耐水性能 接触角 |
| 收稿时间： | 2021-01-31 |
Water Resistance of Flue Gas Desulfurization Building Gypsum Modified by Ordinary Portland Cement |
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| GUO Huishi,WANG Qingpei,ZHANG Guo,LI Wenfeng,MENG Erchao,CHEN Wenliang,HUI Shouhua,ZHOU Liming. Water Resistance of Flue Gas Desulfurization Building Gypsum Modified by Ordinary Portland Cement[J]. Bulletin of the Chinese Ceramic Society, 2021, 40(7): 2288-2295 |
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| Authors: | GUO Huishi WANG Qingpei ZHANG Guo LI Wenfeng MENG Erchao CHEN Wenliang HUI Shouhua ZHOU Liming |
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| Affiliation: | 1. College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001,China; 2. College of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, China |
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| Abstract: | The gypsum has been limited in building field due to its poor water resistance. The modified flue gas desulfurization (FGD) building gypsum with well water resistance and low cost was fabricated with the FGD building gypsum and ordinary Portland cement as raw materials in this paper. The effect of cement content on physical properties, phase composition, and microstructure of hydrated samples was systematically investigated. Results show that with the increase of the ordinary Portland cement content, the content of AFt, CH, and C-S-H increases, which fill the pores, so that the water absorption decreases first and then increases, while the softening coefficient, contact angle, and hardness show an opposite trend. When the content of cement is 18% (mass fraction), the hydrated sample shows a well water resistance. This study provides a technical basis for the preparation of the FGD building gypsum and its products with well water resistance, low-cost, and environment-friendly, which also has an important significance to the popularization and application of the FGD gypsum. |
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| Keywords: | flue gas desulfurization building gypsum ordinary Portland cement water resistance contact angle |
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