环氧乳液对水泥基修补材料性能的影响
Effect of epoxy lotion on properties of cement-based repair materials
关键词：
水性环氧树脂；水泥基修补材料；工作性；力学性能；抗冻性能
Key words：
Waterborne epoxy resin; Cement-based repair material; Workability; Mechanical property; Frost resistance
刊期：
2025年第9期
DOI：
10.19761/j.1000-4637.2025.09.025.05
文章编号：
基金项目：
国家自然科学基金面上项目（52178226）；山东省重点研发计划项目（2021CXGC010301）；山东省优秀青年基金项目（ZR2023YQ051）。
作者：
马川义1，陈李瑜2，张圣涛1，孟博杰2，张瑞雨2，常洪雷2，*
单位：
1.山东高速集团有限公司，山东 济南 250098；2.山东大学 齐鲁交通学院，山东 济南 250002
摘要
摘 要：采用水性环氧树脂与固化剂混合成环氧乳液，研究了聚灰比（0.05、0.10、0.15、0.20、0.30）对水泥基修补材料工作性、力学性能和抗冻性能的影响。结果表明：随着聚灰比的增大，水泥净浆的初凝时间基本延长，终凝时间先延长后缩短；随着聚灰比的增大，砂浆试件的抗折、抗压强度均先降低后基本不变，净浆试件的抗压强度先降低后基本不变，而抗折强度整体变化不明显；环氧乳液的掺入使冻融循环后砂浆试件的质量损失率有所增加；掺环氧乳液组砂浆试件冻融循环后的抗压、抗折强度降低幅度小于基准组，掺环氧乳液能提高砂浆试件冻融循环后的力学性能。
Abstract: Epoxy lotion was prepared by mixing waterborne epoxy resin and curing agent. The effect of polymer-cement ratio (0.05, 0.10, 0.15, 0.20, 0.30) on the workability, mechanical properties, and frost resistance of cement-based repair materials was studied. The results show that as the polymer-cement ratio increases, the initial setting time of cement slurry is basically prolonged, and the final setting time is first prolonged and then shortened. As the polymer-cement ratio increases, the flexural and compressive strength of mortar specimens first decrease and then remain basically unchanged, and the compressive strength of slurry specimens first decreases and then remains basically unchanged, while the overall change in flexural strength of slurry is not significant. The addition of epoxy lotion increases the mass loss rate of mortar specimens after freeze-thaw cycles. The compressive strength and flexural strength of mortar specimens mixed with epoxy lotion after freeze-thaw cycle decrease less than those of the reference group, and the mechanical properties of mortar specimens after freeze-thaw cycle can be improved by adding epoxy lotion.
结论
（1）随着聚灰比的增大，水泥净浆的初凝时间基本延长，终凝时间先延长后缩短，流动度基本增加。其中，A类环氧乳液对水泥凝结时间的延长效果更佳明显。
（2）随着聚灰比的增大，砂浆试件的抗折、抗压强度均先降低后基本不变，净浆试件的抗压强度先降低后基本不变，而抗折强度整体变化不明显。相比之下，B类环氧乳液更易与水泥净浆形成稳定结构，而A类环氧乳液更易与砂浆形成稳定结构。
（3）环氧乳液的掺入会使冻融循环后砂浆试件的质量损失率增加，但可以提高砂浆试件冻融循环后的力学性能；整体来看，掺入环氧乳液可以提高砂浆试件的抗冻性能，且A类环氧乳液对砂浆抗冻性能的提高效果更佳。
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引用本文
马川义,陈李瑜,张圣涛,等.环氧乳液对水泥基修补材料性能的影响[J].混凝土与水泥制品,2025(9):25-29.
MA C Y,CHEN L Y,ZHANG S T,et al.Effect of epoxy lotion on properties of cement-based repair materials[J].China Concrete and Cement Products,2025(9):25-29.
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