硫氧镁水泥改性半水磷石膏试验研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (6): 2115-2120.

所属专题：资源综合利用

硫氧镁水泥改性半水磷石膏试验研究

翁友法^1,2, 李沫弦³, 王超凡³, 陈兵³

1.上海港湾工程质量检测有限公司,上海 201315;
2.中交上海港湾工程设计研究院有限公司,上海 200032;
3.上海交通大学土木工程系,上海 200240

收稿日期:2023-03-15 修订日期:2023-03-15 出版日期:2023-06-15 发布日期:2023-06-25
通信作者: 陈兵,博士,教授。E-mail:hntchen@sjtu.edu.cn
作者简介:翁友法(1973—),男,正高级工程师。主要从事新型建筑材料的研制与推广应用。E-mail:wengyoufa@163.com
基金资助:
国家自然科学基金(52278265)

Experimental Study on Hemihydrate Phosphogypsum Modified by Magnesium Oxysulfate Cement

WENG Youfa^1,2, LI Moxian³, WANG Chaofan³, CHEN Bing³

1. Shanghai Harbor Engineering Quality Control & Test Co. Ltd, Shanghai 201315, China;
2. CCCC Shanghai Harbor Engineering Design & Research Institute Co., Ltd., Shanghai 200032, China;
3. Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2023-03-15 Revised:2023-03-15 Online:2023-06-15 Published:2023-06-25

摘要/Abstract

摘要： 针对半水磷石膏硬化后力学性能低和耐水性能差等问题,采用硫氧镁水泥对其改性,研究了硫氧镁水泥掺量对半水磷石膏凝结时间、力学性能和耐水性能的影响,从微观结构角度分析了硫氧镁水泥改性半水石膏的作用机理。结果表明,掺入硫氧镁水泥显著延缓了半水磷石膏的终凝时间,保证了半水磷石膏的施工操作时间。半水磷石膏溶解电离出的硫酸根离子参与硫氧镁水泥水化,形成稳定的517相填充在二水石膏中,大幅度提升了半水磷石膏的力学性能和耐水性能。

关键词: 磷石膏, 硫氧镁水泥, 凝结时间, 抗压强度, 耐水性能

Abstract: Aiming at the problems of low mechanical properties and poor water resistance of hardened hemihydrate phosphogypsum, magnesium oxysulfate cement was used to modify hemihydrate phosphogypsum. The effects of magnesium oxysulfate cement content on setting time, mechanical properties and water resistance of hemihydrate phosphogypsum were investigated. The mechanism of magnesium oxysulfate cement modified hemihydrate phosphogypsum was analyzed from a microscopic point of view. The results show that adding magnesium oxysulfate cement significantly delays the final setting time of hemihydrate phosphogypsum and ensures construction operation time of hemihydrate phosphogypsum. Sulfate ions that dissolved and ionized in hemihydrate phosphogypsum participate in the hydration process of magnesium oxysulfate cement, forming a stable 517 phase filled in dihydrate gypsum, resulting in a great improvement of mechanical properties and water resistance of hemihydrate phosphogypsum.

Key words: phosphogypsum, magnesium oxysulfate cement, setting time, compressive strength, water resistance

中图分类号:

TQ177

翁友法, 李沫弦, 王超凡, 陈兵. 硫氧镁水泥改性半水磷石膏试验研究[J]. 硅酸盐通报, 2023, 42(6): 2115-2120.

WENG Youfa, LI Moxian, WANG Chaofan, CHEN Bing. Experimental Study on Hemihydrate Phosphogypsum Modified by Magnesium Oxysulfate Cement[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(6): 2115-2120.

参考文献

[1] 崔荣政, 白海丹, 高永峰, 等. 磷石膏综合利用现状及“十四五”发展趋势[J]. 无机盐工业, 2022, 54(4): 1-4.
CUI R Z, BAI H D, GAO Y F, et al. Current situation of comprehensive utilization of phosphogypsum and its development trend of 14th Five-Year Plan[J]. Inorganic Chemicals Industry, 2022, 54(4): 1-4 (in Chinese).
[2] 卢文达. 磷石膏制备α高强石膏的晶相调控与绿色制造研究[D]. 武汉: 武汉理工大学, 2019.
LU W D. Crystal phase regulation and green manufacturing of preparation of α high-strength gypsum from phosphogypsum[D]. Wuhan: Wuhan University of Technology, 2019 (in Chinese).
[3] CHEN P, MA B, TAN H, et al. Improving the mechanical property and water resistance of β-hemihydrate phosphogypsum by incorporating ground blast-furnace slag and steel slag[J]. Construction and Building Materials, 2022, 344: 128265.
[4] JIN Z H, MA B, SU Y, et al. Effect of calcium sulphoaluminate cement on mechanical strength and waterproof properties of beta-hemihydrate phosphogypsum[J]. Construction and Building Materials, 2020, 242: 118198.
[5] ZENG X C, YU H F, WU C Y. An overview of study on basic magnesium sulfate cement and concrete in China (2012—2019)[J]. KSCE Journal of Civil Engineering, 2019, 23(10): 4445-4453.
[6] 瞿金东, 彭家惠, 吴莉, 等. 建筑石膏外加剂研究进展[J]. 材料科学与工程学报, 2004, 22(3): 466-469.
QU J D, PENG J H, WU L, et al. Research situation and development tendency of admixtures for building gypsum[J]. Journal of Materials Science and Engineering, 2004, 22(3): 466-469 (in Chinese).
[7] 吕晓娟. 硫铝酸盐水泥对建筑石膏性能的影响[J]. 新型建筑材料, 2019, 46(7): 53-55+74.
LV X J. Effect of sulphoaluminate cement on properties of building gypsum[J]. New Building Materials, 2019, 46(7): 53-55+74 (in Chinese).
[8] WU C Y, YU H F, ZHANG H F, et al. Effects of phosphoric acid and phosphates on magnesium oxysulfate cement[J]. Materials and Structures, 2015, 48(4): 907-917.
[9] GU K, CHEN B, YU H, et al. Characterization of magnesium-calcium oxysulfate cement prepared by replacing MgSO₄ in magnesium oxysulfate cement with untreated desulfurization gypsum[J]. Cement and Concrete Composites, 2021, 121: 104091.
[10] GU K, CHEN B. Research on the incorporation of untreated flue gas desulfurization gypsum into magnesium oxysulfate cement[J] Journal of Cleaner Production, 2021, 271 (10): 122497.
[11] 吴照洋, 张永兴, 张利珍, 等. β石膏相组成和杂质含量对其性能的影响[J]. 无机盐工业, 2021, 53(9): 67-71.
WU Z Y, ZHANG Y X, ZHANG L Z, et al. Effect of phase composition and impurity content of β-gypsum on its properties[J]. Inorganic Chemicals Industry, 2021, 53(9): 67-71 (in Chinese).

[1]	刘超, 赵德强, 马倩, 陈贵, 黄娅, 沈卫国. 水泥-磷石膏稳定碎石路面基层材料的研究与应用[J]. 硅酸盐通报, 2023, 42(6): 2121-2130.
[2]	万子恒, 金子豪, 苏英, 王丽玥, 王斌. 缓凝剂对磷石膏-硫铝酸盐水泥复合胶凝体系性能影响[J]. 硅酸盐通报, 2023, 42(6): 2131-2039.
[3]	李海涛, 樊利存, 程浩艳, 石铁拴, 赵刚强, 胡浩. 烧结工艺对纳米晶种微晶陶瓷刚玉磨料结构与性能的影响[J]. 硅酸盐通报, 2023, 42(6): 2182-2189.
[4]	宋普涛, 王晶, 冷发光, 夏京亮, 陈茜, 张耀辰. 塑性膨胀剂对海上风电超高性能灌浆料性能的影响[J]. 硅酸盐通报, 2023, 42(5): 1608-1614.
[5]	章伟琪, 王辉明. 基于BO-DNN模型的混凝土抗压强度尺寸效应研究[J]. 硅酸盐通报, 2023, 42(5): 1650-1660.
[6]	张晓静, 王德志, 靳凯戎, 刘江, 关岩. 花岗岩石粉对水泥浆体力学性能的影响[J]. 硅酸盐通报, 2023, 42(5): 1704-1709.
[7]	杜新宇, 陈潇, 周明凯, 张浩宇, 杨寅, 王瑜德. 含硫酸盐类固废对硅酸盐水泥水化影响研究[J]. 硅酸盐通报, 2023, 42(5): 1710-1720.
[8]	杨孟君, 曹义冬, 林常, 徐树英, 潘莉莎. 低钙粉煤灰地聚物的流变性能、凝结时间和抗压强度[J]. 硅酸盐通报, 2023, 42(5): 1721-1730.
[9]	隋洪宇, 李林, 温婧, 李芳芳, 姜涛. 硼泥焙烧预处理制备硫氧镁水泥[J]. 硅酸盐通报, 2023, 42(5): 1758-1766.
[10]	刘云霄, 顾凡, 周辉, 崔桓荣, 习婷. FDN-C对高塑性黏土力学特性的影响与机理分析[J]. 硅酸盐通报, 2023, 42(5): 1822-1830.
[11]	刘佳宁, 洪梅, 魏涛, 陈日, 宋博宇. CTAB改性地质聚合物对地下污染源的阻截作用[J]. 硅酸盐通报, 2023, 42(5): 1831-1840.
[12]	陈春红, 俞江, 刘荣桂, 王磊, 刘惠, 伍金龙. 干湿循环下再生细骨料混凝土的氯离子渗透性能[J]. 硅酸盐通报, 2023, 42(4): 1217-1225.
[13]	何俊, 管家贤, 吕晓龙, 张驰. 纳米硅粉改良碱渣-矿渣固化淤泥的抗硫酸镁侵蚀性能[J]. 硅酸盐通报, 2023, 42(4): 1344-1352.
[14]	刘扬, 陈湘, 王柏文, 鲁乃唯, 肖欣欣, 罗冬. 碱激发粉煤灰-矿渣-电石渣基地聚物的制备及强度机理[J]. 硅酸盐通报, 2023, 42(4): 1353-1362.
[15]	张先伟, 高永红, 王平, 李江山, 刘世宇, 郎雷, 雷学文. 电解锰渣-生活垃圾焚烧底渣协同制备路面基层材料试验研究[J]. 硅酸盐通报, 2023, 42(4): 1363-1373.

硫氧镁水泥改性半水磷石膏试验研究

Experimental Study on Hemihydrate Phosphogypsum Modified by Magnesium Oxysulfate Cement

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价