外文翻译-浅谈混凝土施工过程中温度与裂缝控制.docVIP

Discuss the construction temperature and crack of the concrete lightly 浅谈混凝土的施工过程中温度与裂缝控制 资料来源：The American Society of Civil Engineers 设计题目：吉林建工学院办公楼结构施工设计 学生姓名： 学院名称： 土木工程学院 专业名称： 土木工程 班级名称： 土木0944 学 号： 指导教师： 教师职称： 讲 师 完成时间： 2013.04.02 2013年4月02日 Discuss the construction temperature and crack of the concrete lightly The concrete occupies the important position in modern engineering construction. But today, the crack of the concrete is comparatively general, the cracks are nearly omnipresent in the science of bridge building. Though we take various kinds of measures in constructing, careful, but the crack still occurs now and then. Tracing it to its cause, it is one of them incompletely that our change to concrete temperature stress pays attention to. In the large volume concrete, temperature stress and temperature control are significant. This is mainly because of the reason of two respects. First of all, concrete often appear the temperature crack in not constructing, influence the globality and durability of the structure. Secondly, in the course of operating, the temperature change has remarkable influence that cant be ignored on the stress state of the structure. We meet to construct temperature crack in mainly, so only to origin cause of formation and treatment measure, concrete of crack make a discussion in constructing this text. 1 Reason of a crack Have many kinds of reasons to produce the crack in the concrete, it is mainly the changes of temperature and humidity, fragility and disparity of the concrete, and the structure is unreasonable, the raw materials is not up to standard (if the alkali aggregate react), the template is out of shape, the foundation does not subside etc. evenly . The cement emits a large amount of heat of hydration when the concrete is hardenned,