Description

Blaine Air Permeability Apparatus

Blaine's Air Permeability Apparatus
Model CBAP-ZI 1002
IS 4031, 5516, 1727 & 4828, ASTM C-204
BS 4359-2

The apparatus is used for determining the fineness of cement in terms of specific surface expressed as total surface area in square centimetres per gram of cement. This is a variable flow type are permeability.

Specification:
apparatus consists of one each of permeability cell 12.5mm I.D. manometer 'U' type mounted on stand with a built-in stop cock, perforated disc, plunger rubber stopper, rubber tube 30cm long. Packet of 12 filter paper disc and a bottle of 100ml dibutyl phthalate liquid.

Spares & Accessories:
Punch to cut filter paper discs. Non-perforated disc. Suction bulb

Permeability Apparatus (Single Cell Model):
ZI 2047
IS 3085

One of the durability tests of concrete is to determine permeability of water through specimen. Permeability apparatus is used for determining the permeability of cement mortar and concrete specimens of 15cm cubes cast in the laboratory.

Specification:
The concrete permeability apparatus comprises of a brass / gunmetal cell of Square/Round cross-section mounted on a stand and a pressure chamber is connected to the cell through copper tubing and T-connector mounted on the stand with sleeve packed valve and rubber hose pipe with end connections. The cell assembly consists of one base plate, one metal funnel and one top plate. The pressure chamber is fitted with a pressure regulator which helps in regulating the pressure from 0-15kg/cm sq. Gauge is for indicating the pressure in the cell. A foot pump and a pressure tube is supplied to develop pressure in the chamber. The apparatus is supplied with a measuring cylinder 500cc to measure percolated quantity to water. Pressure can also be applied; by a pressure airline or by a compressor which can be supplied at an extra cost.

Permeability Apparatus (Three Cell Model) :
ZI 2048
Same as ZI 2047 but supplied with three individual cells with stand. Three pressure gauges for indicating pressure in each cell are supplied apart from the main pressure gauge which indicates pressure chamber

POZZOLANA Cement Mortar Permeability Apparatus (Three Cell Model) : ZI 1034
IS 1727-2645
For water proofing of concrete admixture and special waterproof cements are used. Water proofing of these compounds is established by measuring permeability of standard mortar. Specimen with or without such water proofing compounds. Permeability apparatus in 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 100mm dia x 50mm high specimen. Each cell assembly consists of the 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 mount 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.) The pressure chamber is connected to the cells with pressure hoses and with couplings. This pressure chamber is fitted with valve. Pressure is applied to the pressure chamber with help of a foot pump and rubber hose which are supplied with the instrument.

Cement Mortar Permeability Apparatus (Six Cell Model) : ZI 1035
Same as ZI 1034 but Six Cells mounted on a stand
Cement Mortar Permeability Apparatus (Twelve Cell Model) : ZI 1036
Same as ZI 1034 but twelve cells, mounted on a stand.

Accessories: Specimen casting mould C.I. with base plate 100mm dia x 50mm height.
Note: Where Larger Number of Cells Are Used a Suitable Compressor in Place of Pressure Chamber IS Recommended. This Compressor Can Be Supplied At Extra Cost.