Model Number STB-05, UsageApplication Bitumen testing lab equipment Aggregate Impact Value Test Apparatus, Color white, Voltage 220 V

Aggregate impact testing device by Harjai with counter regarding concrete aggregates, Toughness is typically recognized as the resistance offered by the material resulting in unsuccessful outcomes via impact. Several aims to create a procedure for evaluating the significance factor of aggregates been made. The the most prominent and trusted examination is described below. .apparatus Testing device for impact resistance compliant with IS 2386 Part IV, 1963, Featuring sieves of dimensions 12. 5mm and 10mm including a metal cylindrical measuring tool that has a diameter of 75mm and a depth of 50mm, Plus a circular tamping rod measuring 10mm designed with a cross section and a length of 230mm, Rounded at one end to facilitate oven preparation of the sample, The test sample must adhere to specifications According to the grading, 100% of the material is fine enough to move across a 12. 5mm sieve, And all is retained on a 10mm sieve For the sample, Proper preparation should undergo oven drying for 4 hours at a temperature between 100°C and 110°C, Followed by cooling roughly one-third occupied by the blended aggregates and pressed down with 25 strokes of the tamper. A comparable volume of Add aggregates and execute another 25 strokes of tamping, Then fill the measure until it overflows pressed down 25 times and excess aggregates trimmed away, Employing a tamping rod for a straight edge. The net weight It plays a crucial role in ascertain the aggregate weight in the measurement to the nearest gram . Procedure It is essential that the cup of the impact testing device is tightly secured in place on the machine's foundation the full sample is set within it and compressed with 25 strokes of the tamping tool Position the hammer at 380mm above the aggregate's upper surface in the cup and let it land effortlessly on the aggregates. The sample for testing is required to receive a total of 15 blows, Each one being supplied at a minimum frequency of one second. Reporting it is essential to detach the sample and filter it using a 2. 36mm sieve, Allowing the segment that passes through to be Measure the initial weight of the sample, Then weigh the portion that noted as weight c, And if stays on, The The the sieve result should be ignored if the total weight of b and c is reduced by more than one gram compared to the starting weight a and a new evaluation completed. Ii the relationship between the weight of the created fines and the entire sample weight must be represented as a percentage. Aggregate impact measurement = (b over a) multiplied by x 100%