A abrasion test is a common test method used to indicate the aggregate toughness and abrasion characteristics. May 08, 20 objective for determination of the aggregate abrasion value of coarse aggregate. The intent of abrasion testing is to produce data that will reproducibly rank materials in their resistance to scratching abrasion. Up to twelve balls are used, depending on gradation of test sample. Abrasion testing is used to test the abrasive resistance of solid materials.
There are 3 tests commonly used to test aggregates for its abrasion resistance. In the master list of aggregate tests table, there are preparation activities for each test. Aggregate abrasion characteristics are important because the constituent aggregate in hma must resist crushing, degradation and disintegration in order to produce a high quality hma figure 1. Make sure that you complete the preparation activities for each lab you will participate in before your lab visit. Santa ana,ca testing laboratory is a prime location to have your testing performed and for visiting one of the most beautiful locations in the world. The en 1269717 method cantabro test concerns the determination of the particle loss abrasion of porous asphalt mixtures and the en 1269743 concerns the determination of the resistance of a bituminous mixtures or pavement to aviation fuel. C670 practice for preparing precision and bias statements for test methods for construction materials. The machine shall be so driven and so counter balanced as to maintain a substantially uniform peripheral speed. Measure of resistance of coarse aggregate to degradation breakdown by.
Indira gandhi institute of technology igit sarang, dhenkanal759146 phone. The data used for this lab report was not gathered from the student run experiments, but rather from standardized testing performed by the laboratory professor, to ensure accurate and consistent results. Civil engineering lab ii group 3 highway engineering 2 report 2 hw2 2. The abrasion resistance of materials can significantly affect the service life of road pavements when exposed to longterm dynamic traffic loads. The machine shall be rotated for 100 revolutions for all gradings. However, the results of a laboratoryfield study by goode and owings 7 indicated that the degradation of aggregates caused both by compaction and traffic was. After the prescribed number of revolutions, discharge the. Abrasion lab report test results abrasion test results sample raw weight loss g weight loss of samples % kryptane red 80a no loss n. This test is carried out by aashto t 96 or astm c 1. In the united states, approximately 93 percent of hardsurfaced roads are surfaced with asphaltic concrete mixtures. Abrasion test in the last installment of our abrasion testing series, we wrote about the importance and use of the microdeval test. To determine the abrasion value of coarse aggregates as per is. For gradings a, b, c and d, the machine shall be rotated for 500 revolutions.
Haseeb jamal aggregate abrasion characteristics are important because the constituent aggregate in hma must resist crushing, degradation and disintegration in order to produce a high quality hma the %age wear due to rubbing with. Test measures degradation of standard gradings of aggregates when subjected to abrasion and impact, in a rotating steel drum containing an abrasive charge of steel balls. Place the test specimen in the drum and secure the cover. Only two states have a degradation requirement from some other type tests. Abrasion lab report test results the abrasion test a description. Report the grading size from table 1 used for the test. Virginia transportation research council research report. Due to the movement of traffic, the road stones used in the surfacing course are subjected to wearing. The testing services performed at this location include vibration testing, pyroshock srs testing, 901 shock testing, vacuum testing, altitude testing, thermal cycling testing, sand and dust testing and much more. Method of test for abrasion of lightweight course aggregate i. C702 practice for reducing samples of aggregate to testing size.
How to survive alone in the wilderness for 1 week eastern woodlands duration. To ascertain the degradation of aggregates by abrasion and impact. Astm c1 c1m 20 standard test method for resistance to. Rotate the machine at a range of speed from 30 to 33 rpm. If you continue browsing the site, you agree to the use of cookies on this website. Astm c1 c1m 20 standard test method for resistance. The majority of the states have a maximum allowable loss of 40 or 45 percent. Hw2r2 civil engineering lab iigroup 3 highway engineering. For other sizes, the material shall be separated on the appropriate. Abrasion test is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. Aggregate crushing value lab report pdf henan mining. Division of engineering services transportation laboratory 5900 folsom blvd. Materials such as metals, composites, ceramics, and thick weld overlays and thermal spray coatings can be tested with these methods.