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水泥胶砂流动度测定仪安全技术操作规程 | 2013-2-26 15:17:00
水泥胶砂流动度测定仪安全技术操作规程
一、操作步骤
1.跳桌在试验前开空车试转检验各部位是否正常。
2.用潮湿的毛巾擦拭跳桌的表面、试模内壁、捣棒、小刀等与胶砂接触的器具,将试模放到跳桌台面中央并且用潮湿的毛巾覆盖。
3.将拌制好的胶砂迅速的分两层装进圆锥模内,第一层装到圆锥模的2/3高,用小刀在互相垂直的方向划实5次,再用圆柱捣棒由边缘至中心均匀压实15次,紧接着装第二层胶砂,装至高出圆模20mm,用小刀划实5次再用捣棒均匀压实10次。
4.捣压完毕取下模套,用小刀将高出模套的胶砂由中间向边缘分两次刮去并抹平,擦去落在桌面上的砂浆,把圆模垂直方向提起。
5.开动跳桌在1次/s的频率跳动25次,时间为25s±1s。
6.跳动完毕,用卡尺测量胶砂底面最大扩散直径,去相互垂直的两个方向直径的平均值为该试样的胶砂流动度,取整数,用mm表示。
7.清理现场卫生。
8.做好设备使用记录。
二、注意事项
1.捣压时力量要恰到好处刚好使胶砂充满圆模。捣压深度第一层时捣至胶砂高度的1/2,第二层时刚好捣至第一层表面,装胶砂和捣压时要用手扶稳试模,勿使移动。
2.当流动度<180mm时,须以0.01整倍数递增水的办法调整水灰比直至流动度>180mm。
3.测定仪用完后应清扫仪器上的杂物。
4.漆面不要用腐蚀性溶液清洗。
5.不用时应关闭电源。
三、技术要求
圆盘跳动落距:10±0.1mm;跳动部分质量:3.45±0.01㎏;胶砂流动度标准样检验流动度在允许范围内。
- 上一篇:DSH系列双螺旋锥形合机安全操作规程
- 下一篇:水泥胶砂搅拌机安全技术操作规程

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