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[1]刘方,徐玲玲,唐明述.黏结界面的粗糙度和潮湿程度对环氧修补砂浆修补效果的影响[J].南京工业大学学报(自然科学版),2013,35(05):36-41.[doi:10.3969/j.issn.1671-7627.2013.05.007]
 LIU Fang,XU Lingling,TANG Mingshu.Effects of interfacial roughness and wetness on repair effectiveness of epoxy resin based repairing mortar[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(05):36-41.[doi:10.3969/j.issn.1671-7627.2013.05.007]
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黏结界面的粗糙度和潮湿程度对环氧修补砂浆修补效果的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年05期
页码:
36-41
栏目:
出版日期:
2013-09-20

文章信息/Info

Title:
Effects of interfacial roughness and wetness on repair effectiveness of epoxy resin based repairing mortar
文章编号:
1671-7627(2013)05-0036-06
作者:
刘方徐玲玲唐明述
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
LIU FangXU LinglingTANG Mingshu
College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China
关键词:
环氧砂浆 界面 黏结 粗糙度 潮湿程度
Keywords:
epoxy resin based repairing mortar(REM) interface bonding interfacial roughness interfacial wetness
分类号:
TU57+8.11
DOI:
10.3969/j.issn.1671-7627.2013.05.007
文献标志码:
A
摘要:
为了明确在混凝土修补过程中修补界面粗糙度和潮湿程度对环氧修补砂浆修补效果的影响,采用将水泥砂浆试件通过抗折试验仪折断、机械切割后打磨及机械切割后人工凿毛的方法,制备具有不同粗糙度的修补界面,发现界面的粗糙度对环氧砂浆的修补效果没有直接影响。无论基体(水泥砂浆试件)的粗糙度如何变化,在界面干燥的情况下,环氧树脂基修补材料(RME)修补后试件的黏结抗折强度与水泥砂浆的抗折强度相当,断面均处在水泥砂浆层,表明修补砂浆黏结能力优秀。在水中浸泡后取出并阴干不同时间得到的界面潮湿程度对修补砂浆修补效果的影响大,界面完全浸润时,修补砂浆黏结能力很差。随着界面逐渐干燥,修补砂浆的黏结力也增强。研究结果表明,修补砂浆通过对水泥砂浆界面裂缝的渗入,从而达到机械齿轮的啮合作用,界面上的作用力是以机械啮合力为主。
Abstract:
To study the effects of interfacial roughness and wetness on the repair effectiveness of epoxy resin based repairing mortar(RME)between REM and cement mortar,test samples with different surface roughnesses were prepared by broken by bending tester,cut and polished and cut and chiseled.Bonding strength showed that there was little effect of interface roughness on repairing.The fracture interfaces of the testing specimens were all on the cement mortar.But experimental results showed that there was great impact of interface moisture on repairing.When the interface was fully soaked,the bond strength was lower.And the bonding strength increased with the interface drying gradually.The result showed that due to the permeating of repairing materials through the crack of the cement mortar,REM bonded cement mortar was strongly based on the meshing force.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-11-15
作者简介:刘方(1982—),男,江苏南京人,博士生,主要研究方向为混凝土材料; 徐玲玲(联系人),教授,E-mail: xll@njut.edu.cn..
更新日期/Last Update: 2013-09-07