Dispersion characteristics of graphene in cement paste

被引：0
|
作者：
Lv J. [1 ]
Li S. [2 ]
Tian B. [1 ,2 ]
Quan L. [2 ]
Li L. [2 ]
机构：
[1] School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin
[2] Research Institute of Highway Ministry of Transport, Beijing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 10期
关键词：
Alkaline environment; Cement paste; Dispersion performance; Evaluation method; Graphene;
D O I：
10.13801/j.cnki.fhclxb.20211214.002
中图分类号：
学科分类号：
摘要：
In order to evaluate the dispersion method and dispersion degree of graphene in pure cement mud, different anionic surfactants were used as dispersion graphene materials, and graphene dispersion was prepared by high-speed physical mixing and ultrasonic dispersion methods.Their dispersion uniformity was analyzed by UV-visible spectrophotometry, static settlement, resistivity, SEM and energy spectroscopy test to observe the distribution of graphene in alkaline solutions, pure cement mud, and its pure cement mud hydrochemical hardening products.The results show that in the pure cement mud alkaline environment, the introduction of bubble microbeads helps to improve the dispersion uniformity of graphene and the stability for time and weaken the floating effect of graphene in pure cement mud. At the same time, the cross-section graphene dispersion uniformity can be improved by 30%. The dispersion effect of graphene in alkaline solution was evaluated by visible spectrophotometry, static settlement and resistivity, which is simple and effective. © 2022, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：4746 / 4756
页数：10
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