摘要
混凝土在施工中易出现裂缝,其影响因素主要是混凝土的内外温差、干缩以及自生体积变形和外部约束作用等几方面,其中主导因素是外部约束作用。针对上述影响因素,在施工中为防止裂缝出现,主要是使用水化热低的水泥,降低水泥用量,采用合理的施工方法,做好冷却和表面隔热,防止渗水。具体施工时,如出现裂缝要及时采取措施进行补救。
The crack has often appeared in the concrete construction, which caused by temperature difference between internal and external, drying shrink and autogenous volume deformation, external restriction which is the main factor, and so on. The methods are used in the construction to prevent the crack such as using cement with low heat of hydration, reducing cement amount, taking rational construction method, processing the cooling and surface heat insulation and preventing leakage. And the crack should be remedied in time in the practical construction.
出处
《东北水利水电》
2008年第9期19-22,共4页
Water Resources & Hydropower of Northeast China
关键词
混凝土施工
裂缝
防治措施
水利工程
concrete construction
crack
prevention method
hydraulic engineering
