Matest catalogue 2018

SECTION C | CONCRETE
365
C375-01
CHLORIDE FIELD TEST SYSTEM
STANDARD: AASHTO T260, Comparable to ASTM C114
The determination of the chloride ion concentration in concrete is
essential in assessing the need for maintenance on, for example,
bridge decks and parking structures. The test can also be used
to ensure that materials used in new construction are free from
potentially harmful chloride ion levels.
With this method, the concentration of acid soluble chlorides is
measured. In most cases this is equivalent to total chloride concentration.
MAIN FEATURES
Fast results within minutes at the site
Low cost per sample compared to laboratory testing
Accurate results are comparable to laboratory
testing
Covers wide range from 0.002% to 2% chloride by
weight
Automatic compensation for changes in ambient
temperature
Digital display for direct reading of lbs./cu.yd. and
percentage of chloride by weight
C375-10 KIT
AIR AND WATER PERMEABILITY OF CONCRETE
FIGG TECHNIQUE
The ingress of air and moisture into the concrete can cause
corrosion of the steel reinforcement and lead to a deterioration in
concrete strength.
Therefore, a measure of the ease of movement of liquids and
gases through the surface layer of the concrete is a better method
of assessing the soundness and expected life of concrete than
strength alone.
Permeability is recognized as being the most important parameter in
assessing concrete durability.
The depth test is performed by drilling a hole 10 mm diameter x 40 mm
deep, and plugged with a silicone rubber plug.
A hypodermic needle is passed into the stopper; the water permeability
test is performed by measuring the time of absorption needed
by the water introduced into the void by pressure.
For the air permeability test, a vacuum pressure is created in the
void, and the time needed to rise this pressure is measured.
Surface permeability tests can be carried out by clamping a stainless
steel chamber on the smooth surface of the concrete.
The test system includes:
- Electronic meter, high impedance with temperature compensation
and microprocessor for direct conversion to percentage of
chloride. Battery powered.
- Chloride combination electrode with temperature sensor
- 12 jars each with 20 ml of extraction liquid
- 5 jars of coloured calibration liquid
- Scale for 3 g samples weighing, accessories,
carrying case
C375-10 KIT
Weight: 5 kg approx.
The equipment comprises: manual
vacuum pump, digital pressure measuring
system, stainless steel chamber
for surface measurements, 25 silicone
rubber plugs, clamping pliers, drill
bits, anchors, accessories. The whole
contained in carrying case.
Dimensions: 430x300x150 mm
Weight: 6 kg approx.
SPARE
C375-01
C375-11 Silicone rubber plugs. Pack of 25 pcs.