混凝土
混凝土
혼응토
CONCRETE
2014年
8期
21-22,26
,共3页
新老混凝土%界面%抗弯%弹性模量%试验
新老混凝土%界麵%抗彎%彈性模量%試驗
신로혼응토%계면%항만%탄성모량%시험
new-to-old concrete%interface%flexural performance%elastic modulus%testing
结构的修复与加固会导致结构中新老混凝土结构界面的存在。新老混凝土结构界面的性能直接关系到结构修复加固的效果及结构的安全。采用有、无植筋对新老混凝土弯曲性能的影响对比试验，研究了新老混凝土弯曲性能。试验结果表明新老混凝土界面采用植筋处理后弯曲强度及等效弹性模量得到明显提高。试验结果为更好地进行混凝土结构的修复与加固提供了依据。
結構的脩複與加固會導緻結構中新老混凝土結構界麵的存在。新老混凝土結構界麵的性能直接關繫到結構脩複加固的效果及結構的安全。採用有、無植觔對新老混凝土彎麯性能的影響對比試驗，研究瞭新老混凝土彎麯性能。試驗結果錶明新老混凝土界麵採用植觔處理後彎麯彊度及等效彈性模量得到明顯提高。試驗結果為更好地進行混凝土結構的脩複與加固提供瞭依據。
결구적수복여가고회도치결구중신로혼응토결구계면적존재。신로혼응토결구계면적성능직접관계도결구수복가고적효과급결구적안전。채용유、무식근대신로혼응토만곡성능적영향대비시험，연구료신로혼응토만곡성능。시험결과표명신로혼응토계면채용식근처리후만곡강도급등효탄성모량득도명현제고。시험결과위경호지진행혼응토결구적수복여가고제공료의거。
Repair and rehabilitation of concrete members is a common requirement in present day maintenance of structures.Many con-crete structures have been rehabilitated in order to extend the service life or restore the original strength of the structures.An interface ap-pears whenever a repair material is applied to structures after rehabilitation.Usually the interface is relatively weaker than the material on either side of it in a repaired system.The performance of the repaired system is strongly dependent on the performance of the interface.The testing study on flexural performance of new-to-old concrete has been carried out to compared structures with and without embedded bar. The testing results showed that embedded bars can improve the flexural strength and elastic modulus.The testing results also can provide evidence in further studies which employ repair and rehabilitation of concrete structures.
