What is the size of plunger used for standard consistency test?

It is of polished brass 10 ± 0.05mm in diameter with a projection at the upper end for insertion into the movable rod.

Standard Consistency of Cement:

The standard consistency is the consistency which will permit the vicat plunger having 10mm diameter and 50mm length To penetrate into a depth of 33-35mm from the top of the mould.

It consists of an arrangement to hold the plunger of 10 mm diameter And two other needles which are made to freely fall into a mould filled with the cement paste and the amount of penetration of the needles of plunder can be noted using the vertical graduations from 0 mm to 50 mm.

Standard consistency test:

This test determines the percentage of water required to make workable cement paste. Vicat’s apparatus Is used to perform this test. As per Vicat’s test ‘the percentage of water added to the cement at which the needle can not penetrate 5-7 mm from bottom of the mould is called consistency.

The standard consistency of a cement paste is defined as the percentage of water added In 300gm weights of cement which will permit a Vicat plunger having 50 mm length and 10 mm Diameter to penetrate in cement paste to a depth of 33-35 mm from the top of the mold.

Consisting of a steel base with recess to house the test cup and the vertical column holding the penetration plunger assembly. The height of drop is 100 mm And the weight of plunger assembly is 90 g.

The square needle is used for initial setting time test, The plunger Is used for consistency test and the needle with annular collar is used for final setting time test. 7.

Place the cup of the plunger over the drain to create a tight seal and, using firm pressure, push and pull the plunger vertically. Similar to plunging a toilet, plunge the drain for about 20 seconds. If you continue to have a slow drain, try plunging more and use extra force.

There are Three Types of plungers: the cup plunger, the flange plunger, and the accordion plunger. Knowing which plunger to use can increase your odds of unclogging a sink or toilet drain.

The Plunger is 10 mm diameter at one end and is fitted with a removable 1 mm diameter needle at the other end. The plunger is reversible and carries an indicator which moves over the scale graduated in millimeters. The apparatus is supplied complete with plunger, needle and hard rubber mold.

Used to determine the consistency of fresh mortar, lime and masonry cement. The base is designed to locate the test cup accurately. The height of the drop can be adjusted to 100mm.

Vicat’s apparatus Is the standard apparatus used to find out this initial setting time. Look in the figure above, there is a needle of diameter 1 mm. This needle is fixed to the movable rod weight. The cement paste of normal consistency is formed and is filled in the mould.

The probe weighs 300 g (1000 g AFNOR) and needle diameter is 1.13 mm (1 mm ASTM). The equipment performs a complete penetration cycle in 30 seconds or at intervals of 1 – 5 – 10 – 15 – 30 minutes between penetrations.

The Vicat’s needle (1 mm² Needle) cannot go into it within 5± 0.05 mm measured from the bottom of the mould. It should not be less than 30 minutes for OPC.
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Detailed Solution.

The length of the needle varies from 40 mm to 50 mm.

A small screw for plastication (diameter 14–18 mm) and one injection plunger (diameter 4–8 mm) [10–12]; Two pistons, one for plastication (e.g., diameter 6 mm) and one for metering/injection (diameter 2–5 mm) [13]; Two screws, one for plastication and one for injection (diameter 15–18 and 8 mm, respectively) [14].

Sink plunger, 4-1/2″ Diameter with 9″ wooden handle.

There’s a tremendous amount of variation in the size, shape and placement of the drain opening found in today’s toilets, and older, Cup-style plungers are simply not up to the challenge. If the plunger can’t make an effective seal, then it’s impossible to force enough liquid down the drain to unclog the pipe.

The apparatus consists of a frame bearing a movable plunger of 300 grams weight. The Plunger is 10 mm diameter at one end and is fitted with a removable 1 mm diameter needle at the other end.

The plunger, or piston, is The component of the prefilled syringe that, when depressed, pushes the vaccine-containing liquid out through the needle into the patient. The stopper at the end of the plunger must move smoothly in the barrel while preventing any leakage or possible contamination.

The probe weighs 300 g (1000 g AFNOR) and needle diameter is 1.13 mm (1 mm ASTM).