摘要
分析了混凝土保护层对结构承载力、裂缝、耐久性和防火性能的影响,针对目前规范和实际工程存在的问题提出了一些看法.认为没有必要增加目前规范对混凝土保护层厚度的规定,但是规范要增加关于箍筋保护层厚度的规定和气候地理位置给混凝土保护层带来的影响.在施工方面,一定要做好对混凝土保护层厚度的控制工作,有必要采用一定的构造措施,并且要重视混凝土的养护以提高混凝土的耐久性.
The paper analyses the impact of concrete protective cover on the bearing capacity of structure,the crack,durability and the fire-resistance and also gives some viewpoints to existing problem of the present specification（or code） and practical project.It′s not necessary to include the specification of the concrete cover thickness on the basis of the present code.However,the code should add the specification of the stirrup thickness and the impact of climatic geographical position on the concrete cover thickness.In the construction we must control the concrete cover thickness and adopt some structuring measures.Furthermore,in order to improve the durability of concrete we should value the curing of concrete.
出处
《湖北民族学院学报（自然科学版）》
CAS
2010年第4期458-462,共5页
Journal of Hubei Minzu University(Natural Science Edition)
基金
国家自然科学基金项目(4027005)
关键词
保护层
裂缝
碳化
耐久性
保证率
protective cover
crack
carbonation
durability
probability of non-exceedance
