Geotextile wear tester method - Database & Sql Blog Articles

Geotextile Wear Tester [Usage]: In order to ensure accurate testing, specimens must be tested under standard atmospheric conditions as specified in GB6529. 2. Place the calibrated specimen on a stationary upper plate and secure it at both ends using clamps. The abrasive material should be placed on a reciprocating lower plate and also secured at both ends with clamps. 3. Align the upper plate with the lower plate so that the specimen is properly positioned against the abrasive. 4. Apply a total load of (6 ± 0.01) kg to the upper plate, including the weight of the plate itself. 5. Turn on the power switch and set the desired number of wear cycles. The tester will begin the wear test, operating at a frequency of 90 cycles per minute. The test will run for 750 cycles or until the specimen is worn through. If the specimen wears through before reaching the set number of cycles, record the actual number of cycles and the condition of the sample. In case of any abnormalities during the test, press the stop button and reset the counter for the next trial. 6. If the specimen or abrasive slips within the clamps, discard the current sample and retest after adjusting the setup. Replace the abrasive after each test. Conduct tensile tests separately on both the reference and worn samples according to CB/T 3923.1. 7. Calculation and Reporting of Results: Calculate the percentage of strength loss for each test set, rounding to the nearest 1%: Strength Loss Rate (%) = [(FA - FB) ÷ FA] × 100 Where: FA = Reference fracture strength, in Newtons (N) FB = Fracture strength of the worn sample, in Newtons (N) Additionally, calculate the average strength loss percentage and the coefficient of variation for the five test samples. 8. Test Report: The test report should include the following information: a) The standard number used (e.g., GB6529). b) Identification details of the sample, in accordance with GB14798. c) Direction and front/back orientation of the sample. d) Average strength loss rate, in percentage. e) Coefficient of variation of strength loss, in percentage. f) Any deviations from the standard procedures, such as changes in cycle count or load. g) Any abnormal conditions encountered during the test, such as unexpected wear or damage. 5. [Test Completed] After finishing the test, clean the equipment thoroughly for future use.

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