Author: Syed Islam

Abrasion Bohme Tester

General Features:

The instrument measures a volume loss in a specimen under abrasion test and it’s used in tests such as: – paving stones – concrete slabs – slabs made of natural rocks – natural stone slabs.

The apparatus is basically composed of cast iron horizontal disc with a speed of 30 ± 1 rpm and a diameter of 750mm furnished of a 200mm test track to position a specimen.

Control panel with digital revolutions counter with automatic stop after 22 rotations. Abrasive Sand is must be ordered separately.

Standards:
EN 1338, 1339, 1340, EN 13892-3, EN 14157

Technical Specifications:

Accessories / Spare Parts:

Abrasion Tester For Natural Stones And Concrete

General Features:
Abrasion Tester used to determine the resistance to abrasion and wear of natural stones and concrete products by measuring the length of a groove produced on the specimen surface by disc with thickness of 70 mm that rotates at controlled speed and makes a constant pressure on the specimen. A charge of abrasive material must be interposed between the disc and the specimen. The abrasion wheel rotates at a speed of 75 rpm. The machine is equipped with digital counter which stops machine at the preset number of revolutions.

The abrasive corundum sand and calibration (Boulonnaise) marble are optional.

Standards:
EN 1338, 1341, 1342, 1343, EN 14157

Technical Specifications:

Accessories / Spare Parts:

Abrasion Tester For Bricks and Glazed Tiles

General Features:
Same to model HR-A2520 but with disc thickness of 10 mm. Suitable for bricks and ceramic glazed tiles.
Abrasive corundum sand and mould (for EN 12808-2) should are optional.

Standards:
EN 102, EN 12808-2, ISO 10545-6

Technical Specifications:

Accessories / Spare Parts:

Freezing And Thawing Chamber

General Features:

Used for the determination of resistance to freezing and thawing by providing freezing / thawing in air/water. Freezing and Thawing Chamber can holding at constant temperature, heating and cooling at desired speeds, water intake and water discharge operations. There is a discharge valve for discharging operations.

3 models are available. Freezing and Thawing Chamber on Air, Freezing on Air and Thawing on Water Chamber and Freezing on Water and Thawing on Water Chamber.

Freezing and Thawing Chamber; automatically stops all operations when the end of the set cycle. If it is required to stay at a specified temperature at the end of the cycle, this can be done by adding to program before the program starts.

In the water thawing step; the water intake moment, the waiting period in water, the water discharge moment can be defined as parameters, each of which is a different step.

The cabin has a cover at the topand equipped with a piston pusher.The water intake tank is stand-alone.

The control unit is electronic and equipped with digital display with 0.1°C temperature resolution.

Software for data transfer to a computer is supplied complete with the cabinet, and data can be monitored during the tests.

Standards:
EN 1338, 1339, 1340, 1367-6, 12371, 13748-2, CEN/TS 12390-9

Technical Specifications:

Magnesium / Sodium Sulphate Test

General Specifications:
Magnesium Sulphate and Sodium Sulphate Tests are used for determining the soundness of aggregates when subjected to weathering action such as freezing and thawing circles. Only the specific products are listed below. It should be noted that other equipment like ovens, sieves, balances etc. are also required to perform these tests.

Sodium Sulphate can be used instead of Magnesium Sulphate according to the ASTM standard.

HR-G0234 Hydrometer 1100- 1200 g/ml is required for the test with Sodium Sulphate Test.

Homogenous temperature distribution can be obtained with water circulation pump that makes feedback. Temperature controller is a microprocessor type and control process has digital display that can.

Magnesium/Sodium Sulphate Test Water Bath can be used as general purpose water bath at 15°C -60 °C with ± 1.0 °C accuracy.

Magnesium/Sodium Sulphate Test Water Bath should be ordered separately.

Magnesium Sulphate Test Set complete with, 2 pieces Plastic Lever Lid Container Ø255 x 235 mm, ∅120 x 160 mm,3,35 (No.6)mm density basket, ∅95 x 120mm, 0,600 (No.30) mm density basket, Hydrometer 1200-1300 g/ml and1 kg Magnesium Sulphate.

Sodium Test Set complete with 2 pieces Plastic Lever Lid Container Ø255 x 235 mm, ∅120 x 160mm, 1,7 (No.12) mm density basket, ∅120 x 160mm, 0,600 (No.30) mm density basket, Hydrometer 1100-1200 g/ml, 1 kg SodiumSulphate.

Other options and accessories should be ordered separately.

Standards:
EN 1367-2, 13450; ASTM C88

Technical Specifications:

Accessories / Spare Parts:

Determination Of Drying Shrinkage for Aggregates

General Features:
The test is developed on concretes of fixed mix proportions and aggregates of 20mm max size.

Length Comparators (Length Measuring Frames) are used to determine possible the length changes in  prisms of different size due to Drying shrinkage, Alkali Silica Reaction (ASR) etc.

The set consists of Length Measuring Frame, Steel Mould according to the related standard, Steel Inserts for mould (pack of 10) and Reference Rod. The set is available in four models; with 0,01 mm Analogue Dial Gauge, with 0.01 mm Digital Dial Gauge, with 0.001 mm Digital Dial Gauge and Heidenhain Digital Readout Unit  with 30×0,0001 mm Length Measuring Sensor which can be connected to Length Measuring Frames.

Prism Mould, 50x50x200 mm, three gang, complete with steel inserts, to determine the thermal properties and weathering of aggregates in drying shrinkage of concrete.

Length Comparator; the top beam is adjustable to suit the specimen’s length.

Analog Dial Indicator; 10 x 0,01 mm division. Digital Dial Indicator has two alternatives as 12.7 x 0,01 mm or 12.7 x 0,001 mm resolution.

Standards:
EN 1367-4, BS 81:102

Technical Specification:

Accessories / Spare Parts:

Colour Standard Chart (Organic Impurities Test Set)

General Features:
Determines presence of injurious organic compounds in sands used in cement mortar or concrete.

Test serves as warning that further tests of sands are necessary before they can be approved for use.

Glass Bottle andSodium Hydroxide should be ordered separately.

Standards:
ASTM C 40, AASHTO T 21

Technical Specifications:

Accessories / Spare Parts:

Desiccator

General Features:
Complete with a perforated porcelain plate.

Technical Specification:

Flakiness (Thickness) Gauge

General Features:
To verify if aggregate is flaky; i.e. if its thickness is less than 0.6 of its nominal size.

Standards:
BS 812

Technical Specification:

Length Gauge

General Features:
Used to determine the elongation index of aggregates: i.e. if length is more than 1.8 of nominal size. Mounted on a hardwood base.

Standards:
BS 812

Technical Specification: