Cement / Concrete Testing Instruments

AS PER IS : 1199-1959

As Entrainment of air in limited percentage improves durability of concrete and very low percentages deteriorate it, measurement of air entrapped in freshly mixed concrete becomes important. The use of chemical additices to increase workability of concrete requires an air content check to be made. Air Entrainment meters are used to determine air entrained in freshly mixed concrete by pressure method.

Specification :
The apparatus consists of a pressure tight flanged cylindrical measuring bowl of 0.005 cubic meter capacity for maximum size of aggregate 38mm. The bowl is fitted with a removable flanged conical cover assembly with the help of a seal. The conical cover has an air valve and a pet cock for bleeding off the water. A transparent cylindrical stand pipe which is graduated in air content is fixed to the conical cover assembly.
Pressure is recorded on the pressure gauge which is mounted on the stand pipe. The whole assembly is mounted on a flat base. The instrument is supplied complete with one each following accessories. Calibration cylinder with spring clamp, Trowel, Tamping Rod, Straight edge, Rubber mallet and measure.

Option : Capacity : 0.007 Cubic Meter / 0.01 Cubic Meter

As per Is 4031-1968, IS 1624-1960 & ASTM C 151, C 141

The autoclave is suitable for conducting accelerated soundness tests on cements or the autoclave expansion test requiring constant steam pressure with the correspondent constant pressure. It consists of a stainless steel cylinder with a welded heat insulated* metal housing attractively finished.

AS Per BS 1881-106

It consists of an aluminium vessel with built in hand operated pressure pump, connected to the measuring gauge showing directly the air content in percentage.

Air content range: 0 +10% div. 0.1 % up to 8% and 0.5% over 8%

Available In Size: Dia. 250x450 mm

In soil machines Permeability is one of the important Engineering properties, as it governs rate of settlement of saturated compressible soil layer and rate of flow of equifer. Permeability is that property of soil which permits flow of water through its interconnection voids. The instrument to measure permeability is called permeameter. The results are used for pumping ground water, for foundation sites excavations, design of dams etc. Tests can be performed on remolded or undisturbed samples using constant head or falling head method.

PERMEABILITY APPARATUS
The equipment comprises one each Gun metal mould, 100 mm I.DX127.3mm highXIOOO ml volume. Gun metal mould extension collar, 100mm dia x 60 mm high for the above mould. Gun metal Drainage base plate with a recess for a porous stone and with an outlet value. Metalic clamping ring. Gun metal drainage cap(top plate with a recess for a porous stone and fitted with an inlet value and an air release valve). Gun metal dummy plate to serve as a false bottom during compaction. Porous stone for drainage cap. Porous stone for base plate. Set of glass stand popes approx. 6mm dia., 10mm dia and 20mm dia mounted on a wooden board. Each glass tube is longer than 1 meter and has a serrested end at the bottom . To read water head 2 nos. meter scales are fixed between the tubes. A length of 3 meter long rubber tubing with pinch cock is also supplied