The aggregate crushing value (ACV) of an aggregate is the mass of material, expressed as a percentage of the test sample. which is crushed finer than a 2,36 mm sieve when a sample of aggregate passing the 13,2 mm and retained on the 9,50 mm sieve is subjected to crushing under a gradually applied compressive load of 400 kN. 2 APPARATUS.
Mar 01, 2012· The premise of the fine aggregate gradation and sand equivalent tests was to determine the participating laboratories proficiency in conducting the test, suitability of their test equipment, and their ability to achieve statistically satisfactory results.
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A kg graded aggregate sample (retained on the mm sieve), 2 L of water and a 5 kg charge of 5 mm diameter steel balls are placed in a stainless steel jar mill and rotated for 2 hours. Loss is the amount of material passing the mm sieve expressed as a percent of the original sample mass.
Apr 28, 2013· 24The aggregate crushing value givesa relative measure of resistance ofan aggregate to crushing under agradually applied compressive aggregate crushing strengthvalue is useful factor to know thebehaviour of aggregates whensubjected to Crushing Test of Aggregate: 24.
Briefly explain the aggregate crushing value test procedure. What is the specified standard size of aggregates? How is the aggregate crushing value of nonstandard size aggregate evaluated ? Aggregate crushing value of material A is 40 and that of B is 25. Which one is better ~nd why? What are the applications of aggregate crushing test?
Utest Material Testing Equipment . Product Code. UTA0650 Aggregate Impact Value (AIV) Testing Apparatus. Standards. BS 812:112. The Aggregate Impact Value Testing Apparatus, meets with BS 812, it is robustly designed to determine the Aggregate Impact Value (AIV) of aggregates which provides a relative measure of the resistance of an aggregate to sudden shock or impact.
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weight of coarse aggregate is undesirable. The test is carried on aggregate sizes between 63 mm and mm. Apparatus: 1 A balance of accuracy of % of the sample weight. 2 A set of sieves. 3 A special scale for elongation index. 4 A special scale for flakiness index.
Mar 01, 2012· The proficiency samples for each test methods were prepared in accordance to CT 202. The target sample mass for fine aggregate gradation 500 ±was 10 grams using materials passing #4 sieve. The target sample mass for sand equivalent was 1000 10 .
aggregate crushing value test report . Aggregate Crushing Value Civil Engineering Portal. This test helps to determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963. Get Price; Aggregate crushing value of aggregates with cement ...
Sep 24, 2010· Crushing test One of the model in which pavement material can fail is by crushing under compressive stress. A test is standardized by IS:2386 partIV and used to determine the crushing strength of aggregates. The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load.
In this test, RAP aggregate was compacted and subjected to crushing action to a degree that is dependent on the crushing resistance of the material. Aggregates with crushing value less than 10 are regarded as strong and anything above 35 are normally too weak for use in road surfaces.