氧化石墨烯纳米片层增强水泥基复合材料力学性能研究

王中明; 张贺玲

doi:10.13204/j.gyjzG20042010

氧化石墨烯纳米片层增强水泥基复合材料力学性能研究

doi: 10.13204/j.gyjzG20042010

王中明¹,
张贺玲²

1. 黄淮学院建筑工程学院, 河南驻马店 463000;
2. 河南中交路通工程监理有限公司, 河南驻马店 463000

基金项目:

国家自然科学基金项目（51402030）。

详细信息

作者简介:
王中明,男,1982年出生,硕士,实验师。电子信箱:wzm258san@163.com

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出版历程
- 收稿日期: 2020-10-20
- 网络出版日期: 2021-06-04

RESEARCH ON MECHANICAL PROPERTIES OF CEMENT-BASED COMPOSITES REINFORCED WITH NANO GRAPHENE OXIDE

WANG Zhongming¹,
ZHANG Heling²

1. School of Construction Engineering, Huanghuai University, Zhumadian 463000, China;
2. Henan Zhongjiaolutong Engineering Supervision Co., Ltd., Zhumadian 463000, China

摘要

摘要: 氧化石墨烯纳米片（GONPs）具有独特的物理性质，使其在水泥基体中成为有效的增强材料。通过试验，研究不同GONPs掺量对水泥基复合材料力学性能、孔径分布及微观结构特征的影响。GONPs以水泥质量分数为0%，0.01%，0.02%，0.03%，0.04%，0.05%制备水泥基复合材料，对经28 d养护的试块进行了抗压强度和间接抗拉强度测试、热重分析（TGA）与X射线衍射分析；利用氮气吸附技术研究试样断裂表面的孔径分布并通过扫描电镜（SEM）观察其微观结构。研究结果表明：通过将GONPs掺入水泥基复合材料中，最高可使其抗压强度和间接抗拉强度分别提高13.1%和41.3%。GONPs与普通硅酸盐水泥（OPC）的结合显著降低了水泥砂浆的孔隙数量，使其微观结构得到显著改善，同时会在水泥砂浆内部形成大量排列规整的片状及花瓣状晶体，提高了水泥基复合材料的力学性能。
- 氧化石墨烯纳米片层 /
- 水泥基材料 /
- 力学性能 /
- 微观结构
Abstract: Graphene oxide nanosheets (GONPs) have unique physical properties, making them effective reinforcing materials. The effects of different amounts of GONPs on the mechanical properties, pore size distribution and microstructure characteristics of cement-based composites were studied in this paper. GONPs prepared cement-based composites at 0%, 0.01%, 0.02%, 0.03%, 0.04%, and 0.05% of the cement mass fraction. The compressive strength and indirect tensile strength of the samples were measured at the 28-day age, as well as thermogravimetric analysis (TGA) and X-ray diffraction analysis; nitrogen adsorption technique was used to study the pore size distribution of the fracture surface of the sample and the microstructure was observed by scanning electron microscopy (SEM). The results showed that by incorporating GONPs into cement-based composites, the maximum compressive strength and indirect tensile strength could be increased by 13% and 41%, respectively. The combination of GONPs and ordinary Portland cement (OPC) significantly reduced the pore size of cement mortar, significantly improved its microstructure, and improved the mechanical properties of cement-based composites.
- graphene oxide nanosheets /
- cement-based materials /
- mechanical properties /
- microstructure

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