硅酸盐学报

硫酸盐-冻融循环下GO改性聚合物水泥砂浆的耐久性与微观结构演变

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李少飞 ¹^,³ , 魏智强 ¹^,²^,³ , 乔宏霞 ¹^,³ , 赵辛源 ¹^,³ , 葸玲玲 ¹^,³

硅酸盐学报 | 混凝土耐久性机理表征与预测方法专题—研究论文 2026,54(2): 676-688

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硅酸盐学报 |混凝土耐久性机理表征与预测方法专题—研究论文 2026 , 54 (2) : 676 -688

硫酸盐-冻融循环下GO改性聚合物水泥砂浆的耐久性与微观结构演变

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李少飞¹^,³, 魏智强¹^,²^,³, 乔宏霞¹^,³, 赵辛源¹^,³, 葸玲玲¹^,³

作者信息

^1．兰州理工大学土木与水利工程学院，兰州 730050

^2．兰州理工大学理学院，兰州 730050

^3．甘肃省先进土木工程材料工程研究中心，兰州 730050

通讯作者:

乔宏霞（1977—），女，博士，教授。

作者简介:

李少飞（1996—），男，博士研究生。

Durability and Microstructure Evolution of Graphene Oxide Modified Polymer Cement Mortar under Sulphate-Freeze-Thaw Cycle

Shaofei LI¹^,³, Zhiqiang WEI¹^,²^,³, Hongxia QIAO¹^,³, Xinyuan ZHAO¹^,³, Lingling XI¹^,³

Affiliations

^1.College of Civil Engineering and Hydraulic Engineering, Lanzhou University of Technology, Lanzhou 730050, China

^2.College of Science, Lanzhou University of Technology, Lanzhou 730050, China

^3.Gansu Advanced Civil Engineering Materials Engineering Research Center, Lanzhou 730050, China

Corresponding Author:

QIAO Hongxia (1977-), female, Ph.D., Professor. E-mail: Hongxia_Qiao@163.com

LI Shaofei (1996-), male, Doctoral candidate. E-mail: lishaofei0202@163.com

出版时间: 2026-02-20 doi: 10.14062/j.issn.0454-5648.20250146

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摘要

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针对硫酸盐环境下水泥基材料的耐久性问题，采用氧化石墨烯（GO）和乙烯-醋酸乙烯聚合物胶粉（EVA）分别制备了普通水泥砂浆、聚合物水泥砂浆、GO水泥砂浆和GO改性聚合物水泥砂浆，通过硫酸盐-冻融循环试验，测试不同冻融循环次数下试件的相对动弹性模量、质量损失和抗压强度，采用X射线衍射、傅里叶红外光谱、热重、低场核磁共振、扫描电子显微镜对试件微观结构演变规律进行表征。结果表明：用0.03%（质量分数，下同）掺量的GO对4%掺量的EVA进行改性，得到的G3ECM试件抗硫酸盐冻融耐久性能最优。150次冻融循环后G3ECM试件的质量损失率最小，为3.75%，相对动弹性模量最大，为73.95%。冻融循环125次后单掺0.03%GO的G3CM试件抗压强度最大，为68.23 MPa，G3ECM试件次之，为62.5 MPa。GO对水泥水化具有促进作用，EVA对水泥水化具有延迟作用，而且具有一定的引气作用。GO和EVA协同作用下具有细化孔隙、优化微观结构、提升耐久性能的作用。

关键词

氧化石墨烯 / 聚合物水泥砂浆 / 硫酸盐-冻融循环 / 质量损失 / 微观结构

Abstract

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Introduction

In the northwest of China, the harsh service environment such as saline soil and large temperature difference leads to the serious salt corrosion and freeze-thaw damage of cement concrete structures, and even structural damage and eventually shortened service life. It is important to improve the durability of cement-based materials via introducing polymers into common cement-based materials. However, the shortcomings of high-temperature sensitivity and low compressive strength of polymer materials limit their further application. In recent years, the introduction of nanomaterials greatly enhances the durability of ordinary cement-based materials. However, the dispersion and dosage of nanomaterials in cement-based materials and their influence on the microstructure of cement-based materials still need a further study.

Methods

Combined with the advantages of polymer and graphene oxide, sulfate and freeze-thaw coupling were used to simulate the special natural environment in the northwest China. Ordinary cement mortar and ethylene vinyl acetate polymer rubber powder were prepared with graphene oxide (GO) and ethylene vinyl acetate polymer rubber powder (EVA), respectively. Polymer cement mortar, graphene oxide cement mortar and graphene oxide modified polymer cement mortar were tested for relative dynamic elastic modulus, mass loss and compressive strength under different freeze-thaw cycles by sulfate-freeze-thaw cycle test. The microstructure evolution of specimens was characterized by X-ray diffraction (XRD), Fourier infrared spectroscopy (FTIR), derivative thermogravimetric analysis (TG-DTG), low-field nuclear magnetic resonance (LF-NMR), and scanning electron microscopy (SEM).

Result and discussion

For 0.03% GO modified with 4% EVA cement mortar, the freezing and thawing resistance of the sample can be improved. After the sulfate freeze-thaw cycle, the maximum mass loss rate of OCM group is obtained (i.e., 5.26%), and the minimum relative dynamic elastic modulus is achieved (i.e., only 56.27%). The minimum of G3ECM is only 3.75%, and the relative dynamic elastic modulus reaches 73.95. After 125 freeze-thaw cycles, the compressive strength of G3CM specimen is the largest, and the OCM of blank group is the smallest. When EVA is mixed alone, the compressive strength of the specimen reduces, while the synergistic effect of GO and EVA can increase the strength. GO can obviously promote cement hydration, and EVA can delay cement hydration to a certain extent, but GO and EVA can still promote cement hydration and optimize microstructure under the synergistic effect. 0.03% GO mono-doped has an optimum effect on the optimization of pore structure, and the polymer film made of EVA can still promote the durability via hindering water transport.

Conclusions

In this study, GO modified polymer was used to prepare GO modified polymer cement mortar. The results of sulfate freeze-thaw cycle test showed that GO and EVA could significantly improve the durability of ordinary cement-based materials via affecting the cement hydration of cement-based materials, optimizing the pore structure and improving the microstructure.

Key words

graphene oxide / polymer cement mortar / sulfate-freeze-thaw cycle / mass loss / microstructure

引用本文

李少飞, 魏智强, 乔宏霞, 赵辛源, 葸玲玲. 硫酸盐-冻融循环下GO改性聚合物水泥砂浆的耐久性与微观结构演变. 硅酸盐学报, 2026 , 54 (2) : 676 -688 . DOI: 10.14062/j.issn.0454-5648.20250146

Shaofei LI, Zhiqiang WEI, Hongxia QIAO, Xinyuan ZHAO, Lingling XI. Durability and Microstructure Evolution of Graphene Oxide Modified Polymer Cement Mortar under Sulphate-Freeze-Thaw Cycle[J]. Journal of the Chinese Ceramic Society, 2026 , 54 (2) : 676 -688 . DOI: 10.14062/j.issn.0454-5648.20250146

基金

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国家自然科学基金(52268042; 52468035)

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2026年第54卷第2期

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文章信息

doi: 10.14062/j.issn.0454-5648.20250146

接收时间：2025-03-07
首发时间：2026-10-27
出版时间：2026-02-20

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出版历史

收稿日期：2025-03-07
修回日期：2025-03-29

基金

国家自然科学基金(52268042; 52468035)

作者信息

^1．兰州理工大学土木与水利工程学院，兰州 730050

^2．兰州理工大学理学院，兰州 730050

^3．甘肃省先进土木工程材料工程研究中心，兰州 730050

通讯作者:

乔宏霞（1977—），女，博士，教授。

参考文献

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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20250146

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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