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材料导报  2024, Vol. 38 Issue (17): 22060053-4    https://doi.org/10.11896/cldb.22060053
  无机非金属及其复合材料 |
涂覆时间对聚合物水泥基钢筋涂层粘接性能的影响机理
胡家宇1,2, 徐菲1, 钱文勋1,*, 肖怀前3, 葛津宇1, 李嘉明1
1 南京水利科学研究院材料结构研究所,南京 210029
2 江苏省水利建设工程有限公司,江苏 扬州 225000
3 江苏省淮沭新河管理处,江苏 淮安 223001
Mechanism of Resting Time on Bond Performance of Polymer Cement-based Coating on Steel Bar
HU Jiayu1,2, XU Fei1, QIAN Wenxun1,*, XIAO Huaiqian3, GE Jinyu1, LI Jiaming1
1 Materials & Structural Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China
2 Jiangsu Water Conservancy Construction Engineering Co., Ltd., Yangzhou 225000, Jiangsu, China
3 Jiangsu Huaishuxin River Administration Bureau, Huai'an 223001, Jiangsu, China
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摘要 为探明由涂层胶凝进程引发的界面过渡区(ITZ)物相经时演变对聚合物水泥基涂层与混凝土保护层间粘接性能的影响机理,制备丙乳与P·O 52.5水泥质量比1∶2的涂层,测试不同涂覆时间下钢筋的握裹力,分析了钢筋涂层与保护层ITZ组成物相的微观形貌及经时演化特征。研究表明:不超过3 h的涂覆时间有利于聚合物水泥基涂层与保护层ITZ中水化硅酸钙(CSH)凝胶的聚合,进而提高钢筋的粘接性能。
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胡家宇
徐菲
钱文勋
肖怀前
葛津宇
李嘉明
关键词:  聚合物水泥基涂层  界面过渡区  钢筋握裹力  CSH凝胶  微观分析    
Abstract: To investigate the influence mechanism of the phase evolution of interfacial transition zone (ITZ) caused by the coating gelation process on the bonding properties of polymer-cement based coating and concrete protective layer, a coating with a mass ratio of 1∶2 between acrylate emulsion and P·O 52.5 cement was prepared, and the bonding strength of coated steel bar under different cementing time was tested. The microstructure and time-evolution characteristics of the ITZ components in reinforcement coating and protective coating were characterized. The results show that shorter resting time (＜3 h) is beneficial to the polymerization of polymer-cement based coating and calcium silicate hydrate (CSH) between the ITZ, and then improve the bonding properties of coated steel bars.
Key words:  polymer cement-based coating    interfacial transition zone (ITZ)    bonding strength of steel bars    CSH    microscope analysis
出版日期:  2024-09-10      发布日期:  2024-09-30
ZTFLH:  TB37  
基金资助: 国家重点研发计划(2021YFB2600704);国家自然科学基金(52109161);新沂河海口枢纽水利科技项目(HKZJG-KY-01)
通讯作者:  *钱文勋,博士,正高级工程师。现任南京水利科学研究院材料结构研究所副所长,兼任中国土木工程学会混凝土及预应力混凝土分会、江苏省水力发电工程学会和南京硅酸盐学会理事,江苏省“333高层次人才培养工程”中青年科学技术带头人。长期从事水(港)工新材料的研究。主持国家“十三五”重点研发计划专项课题2项,作为专题负责人和项目负责人完成国家自然科学基金重点和面上项目各1项。参与编写《水工混凝土试验规范》《水工混凝土外加剂技术规程》等多部行业规范。wxqian@nhri.cn   
作者简介:  胡家宇,硕士,工程师。南京水利科学研究院材料结构研究所毕业,指导教师为钱文勋正高级工程师。现就职于江苏省水利建设工程有限公司,主研方向钢筋混凝土耐腐蚀新材料。发表学术论文3篇,授权发明专利1项。
引用本文:    
胡家宇, 徐菲, 钱文勋, 肖怀前, 葛津宇, 李嘉明. 涂覆时间对聚合物水泥基钢筋涂层粘接性能的影响机理[J]. 材料导报, 2024, 38(17): 22060053-4.
HU Jiayu, XU Fei, QIAN Wenxun, XIAO Huaiqian, GE Jinyu, LI Jiaming. Mechanism of Resting Time on Bond Performance of Polymer Cement-based Coating on Steel Bar. Materials Reports, 2024, 38(17): 22060053-4.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22060053  或          http://www.mater-rep.com/CN/Y2024/V38/I17/22060053
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