Normal Consistency of Cement - IS : 4031(Part 4)
Scope This standard ( IS : 4031 Part 4 ) covers the procedure for determining the quantity of water required to produce a cement paste of standard consistency. Defination of Standard Consistency The standard consistency of a cement paste is defined as that consistency which will permit the Vicat plunger to penetrate to a point 5 to 7 mm from the bottom of the Vicat mould. Very Simple Defination It is the minimum amount of water required to wet all the cement particles. Sampling As per IS : 3535 Temperature and Humidity Temperature Relative Humidity Moulding Room 27 ± 2 °C Not less than 65% Dry Material Water Apparatus Vicat Apparatus (IS : 5513) Balance (1000g, Least Count - 1g) Gauging Trowel (IS : 10086) Measuring Cylinder ( 100ml) Procedure Take 400g of cement in a tray. Take about 25% of distilled water i.e. 100g (or 100ml). Mix the water to dry cemen...