The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load. The test consists of subjecting the specimen of aggregate in standard mould to a compression test under standard load conditions (Figure 1). Dry aggregates passing through 12.5 mm sieves and retained 10 mm sieves are filled
To conduct crushing strength test we need compression testing machine, cylindrical measure, plunger and Isa sieves. First sieve the sample aggregate, aggregate passing 12.5mm sieve and retaining 10mm sieve is oven dries at 100-110 o C for 3-4 hrs. The cylinder is filled with aggregate in 3 layers, 25 strokes of tampering for each later
Get PriceCONCRETE & HIGHWAY MATERIAL LAB SYLLABUS Exp. No. List of Experiments 1. Aggregate Crushing Strength Test 2. Aggregate Impact Test 3. Specific Gravity And Water Absorption Test 4. Attrition Test of Coarse Aggregates 5. Abrasion Test of Coarse Aggregates 6. Shape tests of Coarse Aggregates 7. Penetration Test of Bituminous Materials 8. CIVIL
Get Pricecompressive load. With aggregate of aggregate impact value (AIV) higher than 30 the result may be anomalous. Also aggregate sizes larger than 14 mm are not appropriate to the aggregate impact test. The standard aggregate impact test shall be made on aggregate passing a 14. mm BS test sieve and retained on a 10.0 mm BS test sieve
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Get PriceAGGREGATE CRUSHING VALUE TEST (MS 30: PART 8: 1995) Introduction This test is done accordance with MS 30: Part 8: 1995. The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggregate of an aggregate crushing value higher than 30 the result may be anomalous and in such cases the 10
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Get PriceProcedure of Aggregate Impact Test. The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110 C for a period of 4 hours and cooled. (i) Sieve the material through 12.5 mm and 10.0mm IS sieves. The aggregates passing through 12.5mm sieve and retained on 10.0mm sieve comprises the test material
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Get PriceFor an aggregate to perform satisfactorily on the pavement, it must be difficult enough to resist the abrasive effect of traffic for a long period of time. Soft aggregates will be quickly crushed into powder, while hard aggregates are quite resistant to crushing. The test will also determine the quality of the aggregate
Get PriceDec 19, 2019 The aggregate crushing value test indicates the strength of aggregate which is the most essential property of coarse aggregate. The aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load. For achieving a high quality of pavement, aggregate of higher crushing strength i.e. low
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Get Priceaggregate is obtaining a good sample of the material to be tested.Knowing how to get a good representative sample from a crushing operation, a stockpile, a windrow
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Get PriceAggregate Material Property Specified Threshold Values Minimum 10% FACTa 110 Maximum aggregate crushing valueb 29% Liquid limit 25 Linear shrinkagec 2% Plasticity
Get Pricegate of ‘aggregate crushing value’ 30 or higher, the result may be anomalous, and in such cases the ‘ten percent fines value’ should be determined instead. NOTE 2 - The
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