Precautions For Aggregate Crushing Value Test. 1The ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage the result being recorded to the first decimal place Aggregate Crushing Value BA X 100 where A weight of ovendried sample B weight in g of fraction passing through 236 mm IS sieve 6Video Aggregate Crushing Value.Jul 12, 2021 The crushing strength or aggregate crushing value of a given road aggregate is found out as per IS-2386 Part- 4. The aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load. To achieve a high quality of pavement aggregate possessing low aggregate crushing value should be preferred.
Aggregate Crushing Value and Its Test Procedure One of the test in which concrete material can fail is due to crushing under compressive stress. Aggregate crushing test is standardized by IS 2386 part-IV and used to verify the crushing strength of aggregates. The aggregates should be oven dried, which can passes through 12.5mm and retained on.Aggregate crushing value requirements for concrete. aggregate crushing value requirements for concrete Aggregate Crushing Value Test – Determine Aggregate Aggregate crushing value is defined as the percentage by weight of the crushed or finer material obtained when the test aggregates are subjected to a specified load under standardized conditions and the.
AGGREGATE CRUSHING VALUE This test helps to determine the aggregate crushing value of coarse aggregates as per IS 2386 (Part IV) – 1963. The apparatus used is Cylindrical measure and plunger, Compression testing machine, IS Sieves of sizes – 12.5mm, 10mm and 2.36mm Procedure to determine Aggregate Crushing Value i) The aggregates passing.1.The ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage, the result being recorded to the first decimal place Aggregate Crushing Value = (B A) X 100 where A = weight of oven-dried sample B = weight in 'g' of fraction passing through 2.36 mm IS sieve. 6.Video Aggregate Crushing Value Test.
The 'Aggregate crushing value' gives a relative measure of the resistance of, The apparatus for the standard aggregate crushing test as per IS -.The average crushing value in the different tests is the actual crushing value of aggregate. Important points to remember. It is recommended that the crushing value of aggregate should be less than 30 . If it is than 30 then 10 finer aggregate is suggested to use. The aggregate whose crushing value is less than 30 can be used for.
Objective 1. Determine the aggregate crushing value of coarse aggregate. 2. Assess suitability of coarse aggregates for use in different types of road. Theory The “aggregate crushing value” give a relative measure of the resistance of an aggregate to crushing under gradually applied compressive load.Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test. Aggregate crushing value test 10 fines value test Mechanical Properties of Aggregates Aggregate Crushing Value Test BS812, part 3 Procedure The material to be tested should pass a 14.0 mm 12 in. sieve and be retained on a 10 mm 38 in. sieve.
The crushing value of aggregates is rather insensitive to variation in strength of weaker aggregates. For this reason, a simple test known as 10 percent fine value is introduced. When the aggregates crushing value become 30 or higher, the results are likely to be inaccurate. Aggregate Crushing Load (Source IS 2386 (Part 4) 1963).Transcribed image text 5) Crushing test is required for measuring aggregate fineness modulus 6) Lime is used in a large proportion with a cement mixture to treat concrete cracks 7) Gap graded aggregates results in a large space volume that required a largest amount of cement paste 8) Concrete has high strength to weight ratio 9) ASTM requires that initial time of setting should.