Abrasion Testing Machine
SCTA-0615 the Abrasion Testing Machine according to Böhme
is used for determining the abrasion resistance of concrete and
natural stone products used for internal or external paving.
The machine consists of a grinding wheel of approx. 750 mm diameter, a removable testing weight of
30 kg and a clamping device for the sample. The machine is equipped with an adjustable counter (30
± 1 r.p.m.) and an automatic cut-off system which stops the machine after 22 rotations.
Accelerated Polishing Machine
Accelerated Polishing Machine (PSV) is used to accelerate the
polishing action of vehicle tyres on a road surface, the
resultsare used to develop safer road surfaces. The machine
consists of a road wheel rotating at 320 ± 5 r.p.m, driven by a
fan cooled electric motor.
Abrasive Corn Emery is fed to the point of contact of the wheel
on the test surface for 3 hours, followed by feeding Emery
Flour to polish the surface being tested for a further 3 hours.
Subsequent skid tests are carried out on the test samples using suitable portable skid test
SCTA-0814 Control Stone and SCTA-0815 Friction Tester Reference Stone should be ordered
Aggregate Abrasion Value
The Abrasion Machine is used to determine the Aggregate Abrasion
Value (AAV) by testing the measure of the resistance of aggregates
to surface wear by abrasion. The Abrasion Machine consists of a
flat circular cast iron grinding lap wheel of 600 mm dia. which
rotates in a horizontal plane at a speed of 28-31 r.p.m. The
abrasion sand is fed across the surface of the specimen samples
through a special funnel.
Aggregate Crushing Value
The Aggregate Crushing Value (ACV) Test Set provides a relative measure of the resistance of an
aggregate to crushing under a gradually applied compressive load. Each set consists of steel cylinder,
plunger, base plate, cylindrical measure and tamping rod. All parts of the apparatus are powder coated or galvanized steel, heat treated and ground before manufacturing to make it durable and
reliable. For aggregates smaller than 10 mm, a 75 mm diameter cylinder and associated equipment is
Aggregate Impact Value
The Aggregate Impact Value Testing Apparatus, meets with BS 812,
it is robustly designed to determine the Aggregate Impact Value
(AIV) of aggregates which provides a relative measure of the
resistance of an aggregate to sudden shock or impact. The counter
fitted to the machine automatically records the number of blows
delivered to the sample, manufactured from heavy duty plated
steel to resist corrosion.
Alkali Aggregate Reaction Bath
The Alkali Aggregate Reaction Bath is used to keep 25x25x285 mm samples in NaOH (Sodium
Hydroxide) or in any other solution at a specified temperature. The temperature can be adjusted
between ambient to 80°C by using the digital controller with 2°C accuracy.
The chamber is made of stainless steel and has a capacity of 36 specimens (25x25x285 mm).
Supplied complete with 3 pcs. stainless steel alkali specimens cans (SCTA-0882). Each can has a
stainless steel hanger which can hold 3 pcs. 25x25x285 mm specimens. Additional alkali specimens
cans should be ordered separately
Bulk Density Measure
The Bulk Density Measures are manufactured from heavy duty steel complying with the related
standard. Available in 1, 5, 10 and 20 lt. capacity models to comply with the relevant standards. The
measures are coated against corrosion.
DRYING SHRINGAKE & ALKALI-SILICA REACTIVITY
Length Comparators are used to determine the length changes on different type of cement prisms.
The set consists of a length measuring frame with measuring apparatus attached to it. There are 2
models available; SCTCM- 0037 is with 0.001 mm x 25 mm digital dial gauge and SCTCM-0038 is with
special 0.0001 mm x 30 mm transducer and readout unit.
The Two and Three Gang Shrinkage Moulds are used for the determination of the effect of
aggregates on the drying, shrinkage and length change of hardened cement paste, concrete and
The Two Gang Shrinkage Mould is also used for the determination of the potential alkali reactivity of
cement-aggregate combinations (mortar-bar method) according to ASTM standards. Reference rod
should be ordered separately.
Efflux Index (Flow Coefficient of Fine Aggregates)
SCTA-0440 Efflux Index (Flow Coefficient of Fine
Aggregates) Apparatus is used to obtain information
about the shape and the angularity of grains of fine
The flow coefficient of an aggregate is the time,
expressed in seconds, for a specified volume of aggregate to flow through a given opening, under
specified conditions using a standard apparatus.
Flakiness Index Sieve
Aggregate particles are considered as flaky when their thickness is less than 0.6 of their mean sieve
size. Aggregate to be classified is separated into seven sieve fractions from 6.3 to 63 mm and each
fraction is examined separately. The dimensions of each sieve comply with the relevant International
Standard, manufactured from heavy gauge steel sheet and coated with electrostatic paint. The
accuracy of the slot size is better than 0.1 mm.
Freezing and Thawing Chamber
Used for the determination of resistance to freezing and thawing by providing freezing / thawing in
The chamber is equipped with a user defined program including 10 steps. Time can be adjusted to
999 minutes for each step of the program. The temperature range of the cabinet is -30°C to +30°C.
The temperature is controlled by a sensor which can be immersed either into the sample, into the
water which the sample is placed into or, into the salty water solution placed on the sample before
starting the test. The calibration of the sensor is carried out using the user friendly menu.
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