The treating methods for the interfacial roughness of new to old concrete are summarized, and the advantages of cutting groove method are given.
总结了新老混凝土粘结面粗糙度处理及评定方法，阐述了沟槽法处理老混凝土表面的优越性。
A method was proposed to counter the feature of repair at interfacial transition zone between old and new concrete.
针对新老混凝土修补界面薄弱过渡区的特点，提出改善方法。
The influence of concentration of KH-570silane coupling agent solution to the pull-off bonding strength of concrete at the new-to-old interfacial layer was studied through experiment.
试验探讨了KH - 570硅烷偶联剂溶液浓度对新老混凝土粘结界面层拉拔强度的影响。
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