| 环氧树脂改性碱矿渣修补砂浆的耐久性研究 |
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| 引用本文： | 鹿宇,万小梅,郭思瑶,赵铁军,申晨. 环氧树脂改性碱矿渣修补砂浆的耐久性研究[J]. 混凝土, 2021, 0(1): 122-126 |
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| 作者姓名： | 鹿宇 万小梅 郭思瑶 赵铁军 申晨 |
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| 作者单位： | 青岛理工大学 土木工程学院,山东 青岛 266033;青岛理工大学 土木工程学院,山东 青岛 266033;青岛理工大学 蓝色经济区工程建设与安全山东省协同创新中心,山东 青岛 266033 |
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| 基金项目： | 国家自然科学基金项目(51878365);山东省自然科学基金项目(ZR2017MEE040);国家自然科学基金重点国际合作项目(51420105015)。 |
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| 摘 要： | 通过掺加环氧树脂对碱矿渣砂浆进行增强改性,制备了环氧改性碱矿渣修补砂浆。在此基础上,试验研究了不同聚灰比对改性砂浆收缩性能、毛细吸水及氯离子渗透性能的影响。结果表明,环氧树脂对碱矿渣砂浆的收缩性能有明显的改善效果,随着聚灰比的增加,砂浆收缩率降低幅度越大。吸水系数及氯离子扩散系数都随着聚灰比的增加呈现先下降后回升的趋势,其中,氯离子扩散系数最低可以降低30%~40%。
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| 关 键 词： | 环氧树脂 碱矿渣 收缩性能 毛细吸水 氯离子扩散 |
Research on durability of epoxy resin modified alkali-activated slag based repair mortar |
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| LU Yu,WAN Xiaomei,GUO Siyao,ZHAO Tiejun,SHEN Chen. Research on durability of epoxy resin modified alkali-activated slag based repair mortar[J]. Concrete, 2021, 0(1): 122-126 |
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| Authors: | LU Yu WAN Xiaomei GUO Siyao ZHAO Tiejun SHEN Chen |
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| Affiliation: | (School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China;Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Qingdao University of Technology,Qingdao 266033,China) |
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| Abstract: | Epoxy resin-modified repair mortars were prepared by adding epoxy resin in alkali-activated slag mortar.Then the effects of different poly-binder ratios on the shrinkage properties,capillary water absorption and chloride permeability of the modified mortar were investigated.The results show that the epoxy resin has a significant improvement effect on the shrinkage performance of the alkali-activated mortar.The shrinkage rate of the modified mortar decreases as poly-binder ratios increases.Both the water absorption coefficient and the chloride diffusion coefficient show a trend of decreasing first and then increasing with the increase of poly-binder ratios,and the chloride diffusion coefficient can be reduced by 30%~40%at the lowest. |
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| Keywords: | epoxy resin alkali-activated slag shrinkage performance capillary water absorption chloride diffusion |
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