有害骨料的工程病害及其防治

Engineering Disease and its Prevention and Cure of the Harmful Aggregate

混凝土结构的耐久性已成为当前学术界、工程界关注的热点 ,有害骨料反应是造成混凝土破坏 ,影响结构耐久性的重要原因之一 .受MgO污染的骨料反应是一种极其少见的、特殊情况下出现的有害骨料反应 ,它对混凝土造成的损害类似于碱 -碳酸盐反应 .通过一个受有害骨料损害的工程实例 ,分析其产生病害的原因 ,介绍加固的方法 。

The academic and engineering circles pay close attention to concrete construction's property of lasting. Harmful aggregate reaction is one of the important cause to destroy concrete and affect construction property of lasting. Aggregate reaction pollutted by MgO whose harm to concrete is similar to alkali-carbonate reaction is singularly and appears in special complexion. Through an instance the reasons of the disease are analyzed and the pinning up method is introduced. Also the prevention measure of the harmful aggregate reaction is discussed.