Inorganic Chemicals Industry >
Study on dispersion of silica fume/graphene oxide in hardened cement paste
Received date: 2023-01-31
Online published: 2023-11-16
The research of graphene oxide（GO） as cement reinforcing material has made some progress，and silica fume（SF） is commonly used as cement admixture.It has been reported that SF/GO is compounded to prepare cement-based materials，but the theoretical study of SF-assisted dispersion of GO remains incomplete.Consequently，different dosage of SF/GO suspension was prepared by ultrasonic method，the dispersibility of the suspension in cement pore solution was analyzed.SF/GO hardened cement paste was also prepared.The results of microscopic analysis indicated that SF stripped the GO sheets in cement pore solution，the dispersion and stability of GO were improved.When m（GO）/m（cement） was 0.25% and m（SF）/m（cement） was 10%，the 28 d flexural and compressive strength of the composites were 12.3 MPa and 73.2 MPa，respectively，which were increased by 48.19% and 18.06% compared to the sample without SF.SF served a dual purpose in the cement composites by reacting with Ca（OH）2 to avoid competition for GO from Ca2+ dissociated by hydration，and by filling gaps in the C—S—H structure to improve the composites′ internal density.
Key words： graphene oxide; silica fume; cement; dispersity; cement pore solution
DU Changqing , WANG Zhangxuan , TONG Teng , LIU Xiaofan , LIU Liang . Study on dispersion of silica fume/graphene oxide in hardened cement paste[J]. Inorganic Chemicals Industry, 2023 , 55(11) : 115 -120 . DOI: 10.19964/j.issn.1006-4990.2023-0045
| 1 | VALLURUPALLI K， MENG Weina， LIU Jianhui，et al.Effect of graphene oxide on rheology，hydration and strength development of cement paste［J］.Construction and Building Materials，2020，265：120311. |
| 2 | CHUAH S， LI Wengui， CHEN Shujian，et al.Investigation on dispersion of graphene oxide in cement composite using different surfactant treatments［J］.Construction and Building Materials，2018，161：519-527. |
| 3 | 雷鸣，朱含钰，刘子龙，等.重金属在水泥窑协同处置的净浆硬化体中的分布及形态［J］.无机盐工业，2022，54（8）：107-113. |
| LEI Ming， ZHU Hanyu， LIU Zilong，et al.Distribution and speciation of heavy metals in hardened solid of net slurry co-disposed by cement kiln［J］.Inorganic Chemicals Industry，2022，54（8）：107-113. | |
| 4 | 周远忠，王宏杰，陈鸿，等.二水磷石膏配制水泥基湿拌抹灰砂浆试验研究［J］.无机盐工业，2022，54（8）：114-118，137. |
| ZHOU Yuanzhong， WANG Hongjie， CHEN Hong，et al.Experimental study on preparation of cement-based wet-mixed plastering mortar by dihydrate phosphogypsum［J］.Inorganic Chemicals Industry，2022，54（8）：114-118，137. | |
| 5 | 桂彬，陈鸿，杨林，等.石灰-水泥-粉煤灰改性磷石膏对水泥物理性能的影响研究［J］.无机盐工业，2022，54（12）：92-98. |
| GUI Bin， CHEN Hong， YANG Lin，et al.Effect of phosphogypsum modified by lime-cement-fly ash on physical properties of cement［J］.Inorganic Chemicals Industry，2022，54（12）：92-98. | |
| 6 | WONGKEO W， THONGSANITGARN P， POON C S，et al.Heat of hydration of cement pastes containing high-volume fly ash and silica fume［J］.Journal of Thermal Analysis and Calorimetry，2019，138（3）：2065-2075. |
| 7 | HE Juan， CHENG Congmi， ZHU Xiaofen，et al.Effect of silica fume on the rheological properties of cement paste with ultra-low water binder ratio［J］.Materials，2022，15（2）：554. |
| 8 | WANG Min， YAO Hao.Effects of polycarboxylate ether grafted silica fume on flowability，rheological behavior and mechanical pro-perties of cement-silica fume paste with low water-binder ratio［J］.Construction and Building Materials，2021，272：121946. |
| 9 | DINESH A， ABIRAMI B， MOULICA G.Carbon nanofiber embedded cement composites：Properties and promises as sensor：A review［J］.Materials Today：Proceedings，2021，44：4166-4172. |
| 10 | 李炳良，王闯，马婷，等.碳纤维在水泥基体中的分散性研究［J］.大连交通大学学报，2017，38（4）：147-150. |
| LI Bingliang， WANG Chuang， MA Ting，et al.Study on the dispersion of carbon fiber in cement matrix［J］.Journal of Dalian Jiaotong University，2017，38（4）：147-150. | |
| 11 | LI Xiangyu， KORAYEM A H， LI Chenyang，et al.Incorporation of graphene oxide and silica fume into cement paste：A study of dispersion and compressive strength［J］.Construction and Building Materials，2016，123：327-335. |
| 12 | BAI Shuya， JIANG Linhua， XU Ning，et al.Enhancement of mechanical and electrical properties of graphene/cement composite due to improved dispersion of graphene by addition of silica fume［J］.Construction and Building Materials，2018，164：433- 441. |
| 13 | 陈亚兵，严泽稷，鲁娅，等.硅灰与氧化石墨烯对硬化水泥浆体的复合增强效应［J］.武汉工程大学学报，2017，39（5）：471- 476. |
| CHEN Yabing， YAN Zeji， LU Ya，et al.Compound enhancement effect of silica fume and graphene oxide on hardened cement paste［J］.Journal of Wuhan Institute of Technology，2017，39（5）：471-476. | |
| 14 | 徐博，李春丽，张浩月，等.改进Hummers法制备氧化石墨烯的机理研究［J］.膜科学与技术，2021，41（6）：18-26. |
| XU Bo， LI Chunli， ZHANG Haoyue，et al.Study on the mechanism of preparation of graphene oxide by improved Hummers method［J］.Membrane Science and Technology，2021，41（6）：18-26. | |
| 15 | 吕生华，孙婷，刘晶晶，等.氧化石墨烯纳米片层对水泥基复合材料的增韧效果及作用机制［J］.复合材料学报，2014，31（3）：644-652. |
| Shenghua Lü， SUN Ting， LIU Jingjing，et al.Toughening effect and mechanism of graphene oxide nanosheets on cement matrix composites［J］.Acta Materiae Compositae Sinica，2014，31（3）：644-652. | |
| 16 | 袁小亚，彭一豪，孙立涛，等.热还原氧化石墨烯在水泥水化介质中的分散及其增强砂浆的性能与机理研究［J］.材料导报，2020，34（6）：6075-6080. |
| YUAN Xiaoya， PENG Yihao， SUN Litao，et al.Dispersion of thermally reduced graphene oxide in simulated hydrated cement environment and study on performance and mechanism of graphene reinforced mortar［J］.Materials Reports，2020，34（6）：6075-6080. | |
| 17 | 于锦，李伟峰，胡月阳，等.CSA水泥作为矿物外加剂对硅酸盐水泥性能及水化的影响［J］.硅酸盐通报，2016，35（6）：1772-1779. |
| YU Jin， LI Weifeng， HU Yueyang，et al.Effect of mineral additives CSA cement on the properties and hydration of Portland cement blends［J］.Bulletin of the Chinese Ceramic Society，2016，35（6）：1772-1779. |
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