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NJ-NES非接触式混凝土收缩变形测定仪
一、NJ-NES非接触式混凝土收缩变形测定仪产品介绍: 混凝土收缩开裂与混凝土早龄期(3d)收缩性能密切相关,但传统的收缩性能测试方法对此无法检测。而这一时期内的混凝土,特别是大流动性混凝土的收缩性能变化是*为频繁和复杂的,诸如塑性沉降收缩、自 ...
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