HET 02020 - VICAT NEEDLE APPARATUS - IS : IS: 2645, 2542 (PART-2)
VICAT NEEDLE APPARATUS
The procedure, as recommended in various standards, is for determining the quantity of water required to produce a cement paste of standard consistency. The standard consistency is attained when the 10 mm plunger of the apparatus penetrates the material to a pre-determined depth under free-fall. A new sample is prepared and tested with initial and final needles in accordance with the procedure described in various specifications. Vicat Apparatus consists of a frame bearing a movable rod with a cap at top and a Vicat mould in the form of the frustum of a cone, (80+5)/70 + 5mm dia at the base,(70mm+5mm) /60 mm at the top and 40 mm high, and with a glass base plate of minimum 2.5 mm thickness with various models of Vicat apparatus as per standard specifications. Two models of Vicat Apparatus are offered
Vicat Apparatus, IS: 5513 The apparatus includes one each of: Vicat Mould, Glass Base Plate, Initial Needle (in Plastic Case), Final Needle (in Plastic Case) Consistency Plunger (in Plastic Case) - Vicat Apparatus with Dashpot, IS: 5513 This apparatus includes Dashpot to facilitate the gentle lowering of the moveable rod.