2010年7月4日星期日

To determine standard consistency

-For this test , cement paste with standard consistency has to be used
-Steps:
  1. steps :

-Fix 10mm plunger to apparatus

-Adjust to contact with cement paste in the mould and release

-paste is consirered consistent when pluger penetrates 5-7 mm from bottom of mould

-usual water content is 26-33% by weight of dry cement

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