结果表明:采用振动搅拌可强化搅 拌过程,明显地提高混凝土强度和搅拌效率;采用二次投料搅拌工艺制备的混凝土界面过渡区的粘 结强度得到了明显的改善。 关键词:筑路机械;混凝土;界面粘结强度;振动搅拌;二次投料工艺 中图分类号:U415.522 文献标志码:A Reinforcementmethodsofconcreteinterfacialbond strength FENGZhong—XU,WANGWei—zhong (KeyLaboratoryforHighwayConstructionTechnologyandEquipmentofMinistryof Education,Chang’anUniversity,Xi’an710064,Shaanxi,China) Abstract:Theinterfacialtransitionzoneis aweaklinkofconcretestructure,andamainreasonof concretecracks,SO increaseinterfacial bond strength improvingthestructure concreteinterface.This paperputs forward two methods, vibratorymixng methodandsecondarymixingmethod,tostrengthen concreteinterfacial bond strength.Themechanismsandexperimentaldevicesofvibratorymixingmethodandsecondary mixingmethodaredeveloped andtested.Theresults showthatthe concrete strength canbe increasedbyvibratorymixing method,andtheinterfacestructureis changedandimprovedby secondarymixingtechnology.4tabs,6figs,9refs. Keywords:roadmachinery;concrete;interfacialbondstrength;vibratorymixing;seco