For water proofing of concrete admixture and special water proof cements are used. Water proofing of these compounds, is established by measuring permeability of standard mortar. Specimen with or without such water proofing compounds. This permeability apparatus is used to determine permeability to water of cement mortar specimens with or without water proofing compound.

 

Specification:

The mortar permeability apparatus comprises three brass/gun-metal cells mounted on a stand and a pressure chamber with a pressure regulator. 

 

The cell can accommodate 100 mm dia x 50 mm high specimen. Each cell assembly consists of one base plate.

 

The base plate has one outlet for water and is recessed to hold the specimen in place with a ring washer in between. The top plate has an inlet for water and a suitable connector for the application of pressurized water in the cell. The mould and collar are clamped between the base plate and the top plate with the help of four tension rods and nuts. The cells are mounted on a stand.

 

The pressure chamber is fitted with a pressure regulator which helps in regulating the pressure from 0-7kg/sq.cm. The regulator has two pressure gauges, one for indicating the pressure in the chamber (0-10.5kg/sq.cm.) and the other for indicating the testing pressure (0-7kg/sq.cm.).

 

The pressure chamber is connected to the cells with pressure hoses and with couplings. This pressure chamber is fitted with Schrader valve. Pressure is applied to the pressure chamber with help of a foot pump and rubber hose which are supplied with the instrument. 

 

Description:

Vicat Needle Apparatus is primarily used for ascertaining the consistency and setting times of hydraulic cement, i.e. lime, gypsum plaster and etc.

Specification:

Vicat Needle Apparatus With Dashpot with model is manufactured as per the industry defined IS 4031, 2645, 2542 ( PART-1), 1727, 5513 and 712. BS 12, 146, 915, 1370, 4027, 4246, 4248, AASHTO T 129, E 131 standards. The apparatus comprises of a metallic frame which is equipped with a movable rod along with a cap at the top. The equipment also bears one glass base plate, a vicat mould, one set of needle, as well as initial needle, final needle and plunger for consistency. The apparatus also comes with a dashpot which aids in smooth lowering of the needless.

 

Le Chatelier Flask Used for finding specific gravity of hydraulic cement.  

Specification:

Made from Borosilicate glass. The flask is 243mm in total height, having a bulb of 90mm dia of 250ml approximate capacity. The long neck of the flask has at top a funnel of 50mm dia in that fits a ground glass stopper. The neck has over-all 11mm i.d. upper portion is graduated from 18ml to 24ml with 1 ml graduation. Just at the bottom of the neck 1 ml capacity is marked in between there is 17 ml capacity bulb.

 

Gillmore Needle Apparatus is used to determine initial and final set times of Portland cement, masonry cement, hydraulic hydrated lime, and certain mortars in accordance with ASTM C266 and other standards. 

 

Specification:

A base with a vertical shaft and two horizontal arms. The lower arms is adjustable for height. 1 no. initial needle 1/12-inch dia ¼ lb. Wt. 1 no. final needle 1/24 inch dia. ¼ lb. Wt. 1 no. glass base plate.

 

The apparatus is used to determine the workability of Portland cement concrete. The Kelly Ball test is considered to be simple and much faster than the slump test. Twice the Kelly Ball reading approximately equals the slump.  

 

Specification:

It consists of a cylinder with a ball-shaped bottom and handle together weighing 15 kg.

A strip frame guides the handle and serves as a reference for measuring the depth of penetration.

 

The handle is graduated in MM. Penetration can be recorded to the nearest 0.5mm.