Objective For determination of the aggregate crushing value of coarse aggregate which passes 12 5 mm IS sieve and retained on 10 mm IS sieve Reference Standard IS 2386 Part IV 1963 Methods of test for aggregate for concrete Part IV Mechanical Properties Equipment & Apparatus Steel Cylinder Sieves 12 5mm 10mm Cylindrical metal measure Tamping Rod Balance 0 10kg […]
Get PriceStep 1 First the aggregate sample sieve through 12 5mm sieve and collect it which is retained in 10mm sieve Step 2 Now the sample should be dried through the oven up to 4 hours at 100 deg to 110 deg Step 3 Then the aggregate sample should be filled in the metal cup by 3 layers Each layer should be tamped 25 times by the tamping rod
Get PriceTake the aggregate out of the cylinder and sieve them through a 2 36 mm IS sieve Weight this fraction passing through it to an accuracy of 0 1 gm This fraction is a quantity of the loss of material due to crushing Note down the observations in the proforma then compute the aggregate crushing value
Get Price1 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
Get PriceThe 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 2 1 An
Get PriceObjectives To determine the aggregate crushing value Learning Outcome At the end of the laboratory activity students would be able to 1 Find out the ACV of given sample 2 Analyze data correctly and present in typical format 3 Work in a group to produce technical report
Get Pricethe aggregate crushing value ACV which gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load The method is applicable to aggregates passing a 14 0 mm test sieve and retained on a 10 0 mm test sieve For other size fractions there is another recommended method
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Get PriceThe Aggregate Impact Value Testing Apparatus 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 The number of blows delivered to the sample is automatically documented by the counter that is fitted to the machine
Get PriceAggregate impact value test Adarsh Shukla Aggregate impact value Calculation And uses Shahryar Amin Introduction on aggregate impact testing machine ppt Abhishek Sagar Aggregate impact and sudeepmahapatro Experiment no 02 crushing value Sayed Sajid H Zidani DETERMINATION OF AGGREGATE IMPACT VALUE Sayed Sajid H Zidani
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Get PriceWe have studied different experiments in transportation engineering Asphalt stripping value is one the main test among these experiments The stripping value of bitumen or asphalt is obtained by means of visual experiment The IRC Indian Road Congress explained the asphalt stripping value of aggregate should not be more than 25 percent
Get PriceMake LabTek Model SL AG 00 Origin India Standards IS 2376 PART IV & BS 812 111 Specification The Aggregate Crushing Value ACV test set provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load Each set consists of steel cylinder plunger base plate cylindrical measure and tamping rod
Get PriceAggregate crushing value = W2 x 100 / W1 W W2 =Weight of fraction passing through the appropriate sieve W1 W =Weight of surface dry sample The mean of two result to nearest whole number is the aggregate crushing value Result The aggregate crushing value of the given sample= Aggregate Crushing Values for Roads and Pavement Construction
Get PriceThe crushing value of aggregates is measured in the ratio between the crushed aggregates obtained from the IS sieve 2 36mm and the weight of the dried aggregate sample At least three samples should be tested from the same batch and average value to get accurate results The crushing value of aggregate = W2/W1 x 100 Lab Report
Get PriceThe strength of coarse aggregate is assessed by the aggregate crushing test The aggregate value provides a relative measure of resistance to the crushing under a gradually applied compressive load To achieve a high quality of pavement aggregate possessing low aggregate crusghig value should be preferred Objective s of the Experiment
Get PriceThe 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
Get PriceThe aggregate crushing value ACV test is a laboratory procedure designed to measure the ability of aggregates to resist crushing The apparatus consists of a case hardened steel cylinder 154 mm in diameter and 125 mm high with a plunger that fits inside the cylinder and a base plate
Get PriceThe large production of cement is resulting in a high carbon footprint which is essential to minimize for sustainable concrete construction Moreover the large quantity of recycled coarse aggregate RCA from the demolition of old concrete structures is creating problems for landfill and disposal The primary goal of this study is to investigate the seismic efficiency of innovative fiber
Get PriceProcedure of Aggregate Crushing Value Test 1 Put the cylinder in position on the base plate and weigh it W 2 Put the sample in 3 layers each layer being subjected to 25 strokes using the tamping rod Care being taken in the case of weak materials not to break the particles and weigh it W1 3
Get Pricedepartment of civil engineering must this test evaluate the ability of aggregate used in road highway construction to withstand the stress induced by moving vehicle in form of crushing and gradual loading this test method is applicable to aggregate passing on 14 0 mm test sieve and retained on a 10 0 mm test sieve 3 objectives the basic …
Get PriceProcedure for crushing strength of aggregate Before testing the aggregate should be in surface dry condition You can achieve the dry condition of aggregate by placing aggregates in an oven for 4 hours at 100 degree Celcius The aggregates passing through 12 5mm and retained on 10mm IS sieves are selected for finding aggregate crushing strength
Get PriceSampling for Crushing Test of Aggregate For the Aggregate crushing value test an aggregate sample passing through a 12 5 mm IS sieve and retained on a 10mm IS sieve is selected and dried to a temperature of 105 ºC to 110 ºC then cooled to room temperature To fill the cylindrical measure mold about 6 5 kg of a sample of aggregate is sufficient
Get PriceIt is recommended that the crushing value of aggregate should be less than 30% If it is more than 30 % then 10% finer aggregate is suggested to use The aggregate whose crushing value is less than 30% can be used for cement concrete road The aggregate whose crushing value is less than 40% can be used for wearing surface
Get PriceLevel off the surface andplace the plunger horizontally over it Place the assembly on the pedestal of the compression testing machine Apply the load at auniform rate of 4 tonnes per minute until the total applied load is 40 tones Release the load Take the aggregate out off the cylinder and sieve through 4 75mm IS sieve
Get PriceProcedure of Aggregate Crushing Value Test Sieve the test material through 12 5 mm and 10 0 mm IS sieve Take test samples of aggregates passing through 12 5 mm IS sieve and retained on 10 mm IS sieve minimum 3 Kg Dry theme in an oven for 4 hours at a temperature of 100 °C to 110 °C and then cool at room temperature
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Get PriceResult Aggregate crushing value = 20% Result Analysis The value is higher when more percentage of aggregates crush and break into smaller pieces which indicates the aggregates are of a lower quality Aggregate crushing value < 45% for aggregates used for concrete for non wearing surfaces and <25% for wearing surfaces like runways and roadways
Get PriceThe aggregate Crushing Value Test is an important test to be performed on aggregate The strength of aggregate parent rock is determined by preparing cylindrical shape specimens of size 25 mm in diameter and 25 mm in height This cylinder is subjected to compressive stress
Get PriceRMS T260 Organic Impurities in Fine Aggregate Colour Test RMS T262 Determination of Moisture Content of Aggregates Standard Method RMS T264 Soluble Salts in Sand AS1141 21 Aggregate Crushing Value AS1141 22 Wet/Dry Strength Variation Single AS1141 23 Los Angeles Value AS1141 24 Aggregate Soundness by Exposure to Sodium Sulphate
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