氧化镁混凝土自生体积变形的反正切曲线模型

Arc tangent curve model of the self-volume deformation of MgO concrete

本文以在国内外首次将MgO混凝土应用于主体工程的贵州东风水电站拱坝基础混凝土的室内自生体积变形成果为例,对MgO混凝土自生体积变形的规律进行了研究,提出了MgO混凝土自生体积变形的反正切曲线模型,用以表达MgO混凝土的膨胀变形特性和推算MgO混凝土的长期膨胀变形值。该模型表达简单,利用它推算MgO混凝土长龄期的膨胀变形量,既方便又可信。

It is the first laboratorial experiment results of self-volume deformation of MgO concrete applied to the arch dam foundation of Dongfeng hydropower station in Guizhou province, the laws of self-volume deformation of MgO concete is conducted, the long-term expansion deformation value is reckoned, the arc tangent curve model of the concrete is presented to describe the characteristics of expansion deformation of the MgO concrete. The curve model has simple and clear form, and it is easy and reliable to calculate the long-term expansion deformation value of MgO concrete.