What is the top diameter of Vicat Mould?
What is the top diameter of Vicat Mould?
Vicat mould in the form of frustum of a cone with internal diameter of 60 mm at the top, 70mm at the bottom and a height of 40 mm.
What is the length of Vicat plunger?
20 to 30 mm.
What is a Vicat apparatus?
: a device for determining the normal consistency and time of setting of portland cements that consists of a rod weighing 300 grams, having a needle in each end, and supported in a frame with a graduated scale to measure the distance to which the needle penetrates the cement.
Is specification for Vicat apparatus?
This standard covers the requirements of the Vicat apparatus used for determination of consistency of standard cement paste and initial and final setting times of cement. The materials of construction of different component parts of Vicat apparatus shall be as given in co1 2 of Table 1.
What is the size of Vicat needle?
The device which is used to find the initial setting time of cement is called as Vicat apparatus. It has a square needle of 1 mm size and 50 mm length and a mould, which is 40 mm in height and 80 mm in diameter.
What is the depth of the needle in Vicat apparatus?
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.
Which is the test done using Vicat apparatus?
Vicat apparatus is a penetration device used in testing of hydraulic cements and similar materials to determine their normal or standard consistency. It is also used to determine the initial setting time and final setting time of hydraulic cements and similar materials.
Which one is the more percentage of ingredient in cement?
1. What is the most dominant constituent of cement? Explanation: Cement contains about 60-65% of lime. Silica constitutes 17-25%, alumina 3-8% and magnesia 1-3%.
How do you use Vicat apparatus?
Tap the mould to remove any bubbles of air. Place the mould along with the plate under the rod and plunger attached with the apparatus. Lower the plunger gradually till it touches the surface of the mould and then releases it quickly.
What is the function of the Vicat apparatus?
Standard Vicat Apparatus has a reversible stainless steel plunger and needle assembly for 300g total weight. It is used to determine consistency and initial/final set times of cements and mortar pastes. This unit can be modified for testing to determine a false set.
What is cement fineness?
The fineness of cement is a measure of cement particle size and is denoted as terms of the specific surface area of cement. The Fineness Test of Cement is done by sieving cement sample through standard IS sieve.
How do you use vicat apparatus?
What do you need to know about the Vicat apparatus?
The Vicat Apparatus is designed for determining the normal consistency, standard consistency and time of setting of cement and lime in accordance with ASTM and AASHTO specifications. The apparatus consists of a frame bearing a movable plunger of 300 grams weight.
How big is the plunger on a Vicat?
Vicat Apparatus comes complete with: Initial-set needle, 1.0 mm dia Consistency plunger 10 mm dia Vicat mould 60/70 dia. X 40mm
How big is the base of a Vicat?
The adjustable indicator on the rod may be set to indicate in either orientation on the 0-50 x 1mm graduated scale. It is equipped with a frame and platform and includes a 4x4in (102x102mm) glass plate and HMA-290 hard plastic Conical Mold with 70x60x40mm (2.75×2.36×1.58in) base x top Dia. x H.
What is the minimum thickness of a Vicat mould?
The Vicat mould shall be of truncated conical form with an internal diameter of 70 f 5 mm at the top, 80 the bottom and a height 40 f 0.2 mm. The mould shall be adequately rigid and shall have a minimum wall thick- ness of 4 mm.
What is the top diameter of Vicat Mould? 60 mm Vicat mould in the form of frustum of a cone with internal diameter of 60 mm at the top, 70mm at the bottom and a height of 40 mm. What is the length of Vicat plunger? 20 to 30 mm. What is a Vicat apparatus?…