摘要
冻融循环是建筑结构体在外界环境温度变化下,引起结构体内部含水率变化从而引发结构体内部孔隙扩展结构受损的现象。作为我国北方地区普遍存在的环境变化现象,直接关系到结构体的安全与稳定。鉴于此,拟通过试验研究冻融循环次数对混凝土质量损失率及力学行为的影响规律,并同时考虑受荷和冻融影响下的混凝土损伤本构方程,以期为相关研究提供理论支撑。
Freeze-thaw cycle is a phenomenon that the internal moisture content of building structure changes under the change of external ambient temperature,which leads to the expansion of pores and damage of structure.As a common phenomenon of environmental change in northern China,it is directly related to the safety and stability of structures.This study researches the influence of freeze-thaw cycle times on concrete mass loss rate and mechanical behavior by experimental methods,and the concrete damage constitutive equation under the influence of load and freeze-thaw is considered at the same time,in order to provide theoretical support for relevant research.
作者
李月霞
LI Yue-xia(College of Architectural Engineering,Yuncheng Vocational and Technical University,Yuncheng,Shanxi,044000,China)
出处
《建材技术与应用》
2022年第1期7-10,共4页
Research and Application of Building Materials
关键词
冻融循环
损伤规律
本构方程
freeze-thaw cycle
damage law
constitutive equation
