(湖南大学土木工程学院，长沙 480012)
［摘要］采用8字形新老砂浆抗拉粘结强度的试验方法，研究了丁苯聚合物乳液水泥基界面粘结材料在不同养护制度、不同粘结方法、不同龄期、不同配比条件下的粘结性能,同时研究其本体强度变化规律，对其粘结改性机理进行初步探讨，并利用扫描电镜对界面粘结微观结构进行了分析。结果表明，其粘结性能良好，抗折强度可以提高，抗压强度不显著下降。
［关键词］配比；界面；粘结强度；丁苯聚合物砂浆；水泥基材料
Experimental research on the new-to-old interfacial bond and the strength of SBR mortar
Nong Jinlong, Peng Bo, Huang Zhengyu, Yi Weijian, Zhao Lei(College of Civil Engineering, Hunan University, Changsha 410082, China)
Abstract:The interfacial bond performance of the polymer modified cement-based mortars to the old mortar is researched under the conditions of different curing systems, bond methods, aging and proportion.The mechanism of different materials by use of SEM is discussed.A good result is achieved.
Keywords:proportion; interface; bond strength; SBR polymer mortar；cement-based material
作者简介：农金龙，博士研究生，Email:nongjinlong@sina.com。
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