补偿砼收缩膨胀仪试验方法试验步骤:
3、将试件测定初始长度后的试件侵入(20±2℃)的水中养护,分别测定3d、7d、14d的长度然后移入室温为(20±2℃)相对湿度(60±5℃)的恒温恒湿箱内养护分别测定28d、42d的长度上述测长龄期,一律从成型日起。
4、每组成型的三个试件,取其算术平均值作为长度变化。计算应精确到小数点后第三位。
技术参数:
1、标准棒长度:L=355 0.02mm
2、测量范围:0-10mm【电子数显】
3、试模规格:100×100×400mm【限制收缩实验】
4、测量精度:0.001mm
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补偿砼收缩膨胀仪试验方法