新老混凝土粘结抗折性能研究  

RESEARCH ON ADHESIVE BENDING BEHAVIOR OF YOUNG ON OLD CONCRETE

作　　者：赵志方[1] 赵国藩[1] 黄承逵[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室

出　　处：《土木工程学报》2000年第2期67-72,共6页China Civil Engineering Journal

基　　金：国家基础性研究重大项目!(攀登计划B);<重大土木与水利工程安全性与耐久性的基础研究>基金

摘　　要：选取1年以上龄期的老混凝土制成新老混凝土粘结抗折试件（试件尺寸：150mm×150mm×550mm），试件数量：一百多块）。选用四种界面处理方法处理得到Ⅰ、Ⅱ、Ⅲ、Ⅳ型不同的粘结面。选用三种不同的水泥浆类界面剂：水泥净浆，快硬铁铝酸盐水泥浆，掺10％U型膨胀剂的水泥浆。新混凝土选用普通硅酸盐水泥混凝土，尼龙纤维混凝土，钢纤维混凝土，快硬铁铝酸盐水泥混凝土。考虑上述影响因素进行了系统的新老混凝土粘结抗折性能的试验研究，并阐述了粘结机理。Old concrete aged more than one year is made into adhesive bending specimens. More than one hunedred Speeimens with a size of 150mm×150mm ×550mm, were tested. Four kinds of meththe are selected to nd the inierface which is marked Ⅰ, Ⅱ,Ⅲ,Ⅳ interface. be kinds of cementitious bond agents, such as neat cement paste, cemnt paste mixed with rapid hardening ferroaluminate cement, and cement paste mixed with 10% UEA expanding agen are adopted. Ordinary Portland cement concrete, poypropylene fibre reinforeed concrete, steel fthre reinfereed concrete, and rapid hardening ferroaluminate cement concrete are selected as new concrete in the test. These diffent kinds of interfarial eding methods, bond agents, and the types of new concrete all have an effect on the adhesive bending strength of young on old conrete. No only the experimental research on the above fartors affecting adhesive bending theior have ben carried out systemaically, but also the adhesive mechanism has been elucidated.

关 键 词：粘结抗折性能 界面处理方法 界面剂 混凝土结构 

分 类 号：TU370.1[建筑科学—结构工程]