IS 1727-2645
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. 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.