C6 test method for sieve analysis of fine and coarse aggregates. Both toughness and hardness are important properties of aggregates. C6c6m test method for sieve analysis of fine and coarse aggregates. One of the test in which concrete material can fail is due to crushing under compressive stress. Division of engineering services transportation laboratory 5900 folsom blvd. The intent of abrasion testing is to produce data that will reproducibly rank materials in their resistance to scratching abrasion under a specified set of conditions. Prior to handling test materials, performing equipment setups, andor conducting this method, testers are required to read safety and health in section g of this method. Astm c1 c1m 14 standard test method for resistance to. Sep 08, 2015 this feature is not available right now.
The machine shall be so driven and so counterbalanced as to maintain a substantially uniform peripheral speed. How to find aggregate crushing value and its test procedure. A low lav indicates that the material has high abrasion resistance. Determination of aggregate impact value impact test on aggregates is done to carry out to. After the prescribed number of revolutions, discharge the. The following description is a brief summary of the l. The procedure is issued under the fixed designation usbr 6025.
The ministry of transportation has been developing and evaluating new test procedures for a number of years. Procedure for sampling and quality evaluation testing of. The test sample must contain clean wellgraded aggregates that have been ovendried at a temperature ranging from 105 degrees to 110 degree celsius. Abrasion test is carried out to test the hardness property of aggregates and to decide whether they are suitable for different pavement construction works. Astm c1 c1m 14 standard test method for resistance. Toughnessabrasion resistance aggregates must be tough and abrasion resistant to prevent crushing, degradation, and disintegration when stockpiled, fed through an asphalt plant, placed with a paver, compacted.
Element has the capabilities to create the proper setup that mimics your specific application and allows for a real life simulation. This test is carried out by aashto t 96 or astm c 1. Toughness abrasion resistance aggregates must be tough and abrasion resistant to prevent crushing, degradation, and disintegration when stockpiled, fed through an asphalt plant, placed with a paver, compacted. Abrasion test is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. Natural aggregates undergo a lot of physical change in its entire life. May 08, 20 objective for determination of the aggregate abrasion value of coarse aggregate. This test procedure may involve hazardous materials, operations, and equipment. Then put a specified number of steel spheres in the drum. The machine shall be so driven and so counterbalanced as to maintain a. Many agencies have specified the desirable limits of the test, for different methods of pavement construction.
C670 practice for preparing precision and bias statements for test methods for construction materials. Methods of test for aggregates for concrete, part 4. Pdf microdeval testing of aggregates in the southeast. The percentage is a measure of the degradation or loss of material as a result of impact and abrasive actions. A procedure for testing coarse aggregate larger than 19.
To determine the abrasion value of coarse aggregates as per is. Abrasion test in the last installment of our abrasion testing series, we wrote about the importance and use of the microdeval test. The percent of weight loss cantabro loss is an indication of pfc, lra, and hotmix coldlaid durability and relates to the quantity and quality of the asphalt binder. This is often employed when a client has a nonstandard procedure or specimen that they would like to test. The test sample consists of clean aggregates dried in oven at 105 110c. The first geological source reports were required of crushed stone operations in 1961 and. Due to the movement of traffic, the road stones used in the surfacing course are subjected to wearing. Astm c535 16 standard test method for resistance to. Procedure for sampling and quality evaluation testing of rock for riprap slope protection this procedure is under the jurisdiction of the materials engineering and research laboratory, code 8668180, technical service center, denver, colorado. Jis a 1452 method of abrasion test for building materials and part of building construction falling sand method jis a 1453 method of abrasion test for building materials and part of building construction abrasivepaper method.
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. The final option is a complete custom abrasion or wear test. Since its formation to the final use in construction, the aggregate may undergo a significance change in its shape,its color,toughness and hardness. This was mainly due to the test procedure being timeconsuming and. The grading or gradings used shall be those most nearly representing the aggregate furnished for the work. At the completion of the test, the material should be discharged and sieved through 1. Virginia transportation research council research report. Determine the impact value of the road aggregates, assess. Determination of aggregate impact value impact test on. A procedure for testing coarse aggregate smaller than 37. Thus coarse aggregates with a maximum size between 19 mm 3 4 in. Procedure for sampling and quality evaluation testing of rock.
It is the responsibility of the user of this method to consult and use. The aggregates should be oven dried, which can passes through 12. The longterm durability characteristics of aggregates. Procedure for sampling and quality evaluation testing of rock for riprap. The machine shall be so driven and so counter balanced as to maintain a substantially uniform peripheral speed. There are 3 tests commonly used to test aggregates for its abrasion resistance.