| 摘要: |
| 研究了0~20℃养护温度下，羟乙基甲基纤维素（HEMC）和乙烯醋酸乙烯共聚物（EVA）改性水泥砂浆28d拉伸黏结强度的变化.结果表明：养护制度对不同种类和掺量聚合物改性的水泥砂浆拉伸黏结强度影响差别很大.单掺HEMC时，5℃恒温养护以及20℃/5℃循环养护有利于水泥砂浆28d拉伸黏结强度的发展；单掺EVA时，水泥砂浆28d拉伸黏结强度随着养护温度的升高而增大，循环养护并未明显改善水泥砂浆的28d拉伸黏结强度. |
| 关键词: 水泥砂浆 拉伸黏结强度 低温养护 羟乙基甲基纤维素 乙烯醋酸乙烯共聚物 |
| DOI：103969/j.issn1007 9629201403013 |
| 分类号: |
| 基金项目:“十二五”国家科技支撑计划项目（2012BAJ20B02）;国家自然科学基金资助项目（51102182）;中央高校基本科研业务费专项资金资助项目（0500219164）;硅酸盐建筑材料国家重点实验室开放基金资助项目（SYSJJ2013 08）;先进土木工程材料教育部重点实验室开放基金资助项目（201305） |
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| Influences of 020℃ Curing Systems on Tensile Bonding Strength ofPolymer Modified Cement Mortar |
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WANG Peiming, CHEN Caiyun, ZHANG Guofang
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Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University, Shanghai 201804, China
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| Abstract: |
| The influences of 020℃ curing systems on the tensile bonding strength of HEMC EVA modified cement mortar cured for 28d were studied. The results show that with different type and content of polymers, the curing system has very different effect on the tensile bonding strength of polymer modified cement mortar. 5℃ constant temperature and 20℃/5℃ cycle curing systems are most suitable for the development of the tensile bonding strength of HEMC modified cement mortar. With the increase of curing temperature, the tensile bonding strength of EVA modified cement mortar increases. However, cycle curing systems do not significantly improve the tensile bonding strength of EVA modified cement mortar. |
| Key words: cement mortar tensile bonding strength low temperature curing hydroxyethyl methyl cellulose（HEMC） ethylene vinyl acetate copolymer（EVA） |
