## Lab report aiv.doc

1. 0 objective to determine the aggregate crushing value acv by compressive testing machine.. 2.0 introduction the aggregate crushing value is the value which is mostly used in the design of the pavement of the road because it gives the crushing strength of the aggregate. other than aggregate crushing value there are other parameter required in the design and these include; the jaw crusher.Sep 18, 2017 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. jaw crusher the cup is fixed firmly in position on the base of the machine and the whole of the test sample is added in thirds, each third being subjected to 25stokes from tamping rod.Clarification: the sample after removing from the abrasion machine is passed through 1.7 mm sieve and the weight is noted down. 2.36 mm is used in the impact and crushing test on aggregates. 10. the aggregate impact test was conducted on a sample and the following readings were taken: weight of sample taken = 350 g.

Name of the experiment: aggregate crushing value test. 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 jaw crusher.

### Polished stone valu

Jul 01, 2019 the apparatus of the aggregate impact value test consists of: a testing machine weighing 45 to 60 kg and having a metal base with a plane lower surface of not less than 30 cm in diameter. level and plane concrete floor of minimum 45 cm thickness are used to support it. the base of the machine should also have provisions for fixing its base.1.0 introduction impact value of an aggregate is the percentage loss pf weight of particles passing 2.36mm sieve by the application on load by mean of 15 blows of standard hammer and drop under specified test condition. the aggregate impact value gives a relation measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from their resistance to a jaw crusher.Apr 08, 2017 the aggregate crushing value provides a subjective measure of the resistance of the aggregate crushing in the pressure of the progressively smeared compressive load. when the aggregate crushing value is 30 or greater the outcome can be irregular and in those kind of circumstances the ten percent fines value has to be assessed in its place.

### Scope of crushing value test on aggregate

Determination of the aggregate crushing value acv objective this method covers the determination of 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 12.5 mm sieve and retained on 10 mm sieve. reference bs 812-110: 1990, iqs 1984/40.The strength of coarse aggregates is assessed by aggregates impact test. the aggregate impact value provides a relative measure of resistance to crushing under a gradually applied compressive load. to achieve a high quality of pavement, lower aggregate impact value should be preferred. toughness is the property of a material to resist impact.May 07, 2013 objective for determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. is sieve and retained on 10 mm. is sieve. reference standards is: 2386part iv-1963 methods of test for aggregate for concrete part iv mechanical properties. equipment & apparatus aggregate impact test machine sieves 12.5mm,10mm cylindrical metal measure tamping rod jaw crusher.Determination of aggregate crushing value. objective aggregate crushing value test galerieagnesnl. aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load coarse aggregate crushing value is the percentage by weight of the crushed material obtained wh .

## For highway aggregate crushing value lab report omb

Dec 15, 2017 from the calculations done we know that the aggregate can be acceptable as their aggregate impact value is less then 20 aggregate impact value 10. 10 precautions 1. to wear safety shoes & goggles at the time of testing. 2. before testing, machine should be properly checked. 3. after test clean the sieve by a smooth brush. 4.Aggregate crushing value test – determine aggregate jaw crusher 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 strength of the aggregate used in road construction isthe aggregate crushing value gives a relative measure of the resistance of an jaw crusher.The percentage mass of fines passing a 2.80mm bs test sieve formed in the test is known as the aggregate impact value aiv. higher values are given by weaker materials. for the majority of aggregates the impact value and the crushing value are similar, but brittle materials such as flints yield impact values which are about 5 units higher than jaw crusher.Sep 28, 2010 miles arnold of arnold crushed stone, inc. knew the operation had to make some changes to take full advantage of new gas field market opportunities for crushed and sized aggregates in north texas. they needed to increase production by 125 percent, reduce costs at their two texas limestone quarries, offer competitive pricing, and still make an acceptable profit.

Aug 27, 2019 the aggregate crushing value is a numerical index of the resistance of an aggregate to crushing under a gradually applied compressive load. it is expressed as the percentage by mass of the crushed or finer material obtained when the test sample jaw crusher.Aggregate impact value test machine. take a sample of aggregate and sieve with the help of a 12.5-millimeter sieve and retain it into a 10-millimeter sieve. sieving should be done in a circular motion. after that sample should be sieved with 10 millimeters sieve and collect in a container.Aggregate crushing value 1.objective 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 aggregate crushing value 30 or higher, the result may be anomalous, and in such cases the ten percent fines value should be determined instead.

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Crushing value of aggregate on hot mixing design; objective of aggregate crushing value test; impact of vibration on the foundation of jaw stone crushing; aggregate crushing value test calculation; impact of mining and stone crushing activity on workers; crushing strength of aggregate test; price of machine for crushing stones in aggregates.The general test procedure of the aggregate impact value test is briefly described below. objectives of impact test. 1. to assess the suitability of the aggregate to be used in the highway pavement. 2. to determine the aggregate impact value. apparatus required. 1. an impact testing machine weighing between 45kgs to 60 kgs with a metal base. 2.

Crushing machine, tamping rod, trowel, weighing balance, cylindrical mould, plunger etc. description aggregates crushing value: the aggregates crushing value is the ability of an aggregate to resist crushing under a gradually applied compressive load. impact value: is the resistance of an aggregate to sudden or impact load.

May 05, 2010 aggregate crushing value test the objective of this test is to: determine the aggregate crushing value of coarse aggregate; assess suitability of coarse aggregates for use in different types of road; apparatus. a steel cylinder 15 cm diameter with plunger and base plate. a straight metal tamping rod 16mm diameter and 45 to 60cm long rounded at one end.

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