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Concrete Testing Machines
Permeability
The design of concrete mix is aimed at maximum
durability for the conditions where it is to be used. Ability to resist the
flow of water through is one of the important durability characteristics.
The permeability is determined on cement mortar and concrete specimens,
either cast in the laboratory or obtained by cutting out cores from existing
structures. The Permeability test is carried out as per the standard,
IS:3085 and US Bureau of Reclamation, specifications.
Permeability Testers
High Pressure Permeability Test can be conducted
on different size specimens using different cells. Each cell is made of
steel and provided with a top plate and funnel at the bottom having gasket
seals held in position through bolts and nuts. The concrete specimens are
sealed in the cell to prevent any leakage along the side walls. The
permeated water is collected in glass bottles attached at the bottom. Each
test stall has its own control system, operating pressure gauges and valves.
The pressure sight glass tubes are fully protected by a shatter proof panel
The multi-unit per-meameters are so designed that all tests can be performed
at the same time, using either the same head or varying head pressure, as
each test stall is provided with its own pressure regulator and control. The
control instruments are mounted on a sturdy welded structural stand. All
multi-units are provided with end pressure gauges. Each unit is provided
with chamber pressure gauges of 0-20 kg/cm2 and test pressure gauges of 0-15
kg/cm2. Pressures are applied using any available pressure line at the site
or a compressor.
These are available in the following models :
 |
| IL- 146.1 |
Concrete Permeability Tester for
specimen 100mm dia x 100mm height with 3 cells |
| IL- 146.2 |
Concrete Permeability Tester for
specimen 100mm dia x 100mm height with 1 cell |
| IL- 146.3 |
Concrete Permeability Tester for
specimen 150mm dia x 150mm height with 3 cells |
| IL- 146.4 |
Concrete Permeability Tester for
specimen 150mm dia x 150mm height with 1 cell |
| IL- 146.5 |
Concrete Permeability Tester for
specimen 300mm dia x 300mm height with 3 cells |
| IL- 146.6 |
Concrete Permeability Tester for
specimen 300mm dia x 300mm height with 1 cell |
| IL- 146.7 |
Compressor 300psi trolley mounted |
| IL- 146.8 |
Compressor 150psi trolley mounted |
|
|
Note : The Compressor is not supplied as a part
of the outfit.
Setting time By Penetration Resistance
The method as detailed in ASTM C403 and AASHO T197
is for the determination of setting time of mortar fraction of concrete
mixes. The hardening of concrete is a gradual process and any definition of
setting time is arbitrary and the method is suitable only on mortar mixture
with a value greater than zero. The initial and final setting times are the
periods from when the cement and water are mixed together until the
penetration resistance is 35 kg/cm2 and 280 kg/cm2 respectively.
IL - 147
Pocket Concrete Penetrometer
IL - 148
Concrete Penetrometer, Spring Type
IS: 8142-1976
It consists of cylindrical spring housing with a plunger attached to the
top of the spring. Penetration needle is attached to the other end of the
spring housing. The plunger is graduated in 1 kg divisions, to a maximum
capacity of 60 kg, which can be read with respect to the top end of the
spring housing. A set of six needle points with areas of 645, 323, 161, 65,
32 and 16 mm2 are provided. Supplied complete in a wooden carrying case.
Consistency And Workability
Consistency is a general term relating to the
relative fluidity of the concrete. It is an indication of the amount of
mixing water in relation to the amount of dry materials. Workability
indicates whether or not concrete can be placed easily in some desired shape
or location. To ensure that concrete achieves its maximum possible strength
and yet retains its ease of placing on site, it is essential that the design
of the concrete mix in relation to the water cement ratio and workability is
closely controlled. Following are the methods for determining the
consistency of concrete.
Slump Test
This test is considered suitable for cohesive and plastic mixes of concrete
containing aggregate smaller than 50 mm.
IS: 7320, BS: 1881, ASTM C 143, AASHO T119
Slump Test Apparatus
The slump cone is filled with freshly mixed
concrete and is tamped with a tamping bar in three or four layers. The top
of the concrete is leveled off with the top of the slump cone, the cone is
lifted vertically up and the slump of the sample is immediately measured.
Features
Base has cleats on its underside to help dig into
the ground surface Positive clamping of slump cone to the base while filling
and rodding the concrete A combination swivel carrying handle also doubles
as the datum making the conventional and somewhat awkward measuring
procedure of using a foot rule and a datum bar, a thing of the past Supplied
complete with base plate, having cleats and swivel handle.
IL - 149001
Slump cone
Conforms to IS: 7320, BS: 1881, ASTM C 143, AASHO T 119 specifications.
Made of sheet steel, suitably protected against corrosion.
IL - 149002
IS:516
Tamping Bar of 16 mm dia x 60 cm long.
Vibratory Compaction
Vibrating Table
Proper compaction of cement concrete while casting
specimens for compression testing is essential to achieve a better and more
consistent mixture. Suitable for operation with 220 V, 1 phase, 50 Hz, AC
Supply.
IL - 150
Vibrating Table with load cap 140kg, variable frequency,
The tabletop is 500 mm x 500 mm size and has stops along its edges to
prevent moulds from sliding off the table during operation. The maximum load
capacity is 140 kg. The variable pitch pulley arrangement permits the
frequency to be varied step lessly between 60 Cycles/sec and 43 Cycles/sec
IL - 150.1
Vibrating Table with 2mt x 2mt top
IL - 150.2
Vibrating Table with 0.6mt x 0.6mt top
Needle Vibrator
For setting up fresh concrete, it should vibrate
while casting the structure.
IL-151 - Needle Vibrator Motor driven 1HP 1ph.with 25 mm 3 mtr. Needle
IL-151001 - Needle 60mm
IL-151002 - Needle 40mm
IL-151003 - Needle 25mm
Vibrating hammer
BS: 1377, 1924, BS: 1881
IL-152
This apparatus provides a method for the compaction of soil samples in the
determination of dry density/moisture content relationship, the
determination of unconfined compressive strength of stabilized soil and for
CBR tests. This also useful for compacting concrete specimen in cube and
beam moulds. The following versions are available.
IL-152 - Vibrating hammer Electrical operated 220 volts,
IL-152.1 - Vibrating hammer Pneumatic controlled
Note: The Compressor is not supplied as a part of the outfit.
Curing
It consists of sheet metal and fitted with heater
having thermostatic controller to maintain the temperature. While conducting
the compression test of concrete casting moulds. It should cure properly as
per standard
Curing tank
IL-153
Curing tank suitable for 24 cube mould of 150 mm. Temperature range from
ambient to 100 Degree Cent.
