Crushing value is defined as the ratio of finess passing. Method for determination of aggregate crushing value. Determination of aggregate impact value impact test on. Testing aggregates methods for determination of ten per cent fines value tfv bs 812105. The aggregate crushing value acv of an aggregate is the mass of material, expressed as a percentage of the test sample. Aggregate crushing value w2 x 100 w1w w2 weight of fraction passing through the appropriate sieve.
How is the aggregate crushing value of non standard size aggregate evaluated. Determination of the aggregate impact value of different coarse aggregate samples. The apparatus of the aggregate crushing value test as per is. Aim 1 to determine the aggregate crushing value of coarse aggregates. Methods for determination of aggregate crushing value acv. Test methods for mechanical and physical properties determination of aggregate crushing value acv british standard this document gives the determination of aggregate crushing value acv of aggregates. Scope the acv of an aggregate as defined hereunder is determined by crushing a prepared confined aggregate sample under a specified, gradually applied compressive load and determining the percentage of the material crushed finer than a specified size. The determination of the 10 per cent fines aggregate crushing value 1 scope the 10 per cent fines aggregate crushing value 10 % fact as defined hereunder is determined by measuring the load required to crush a prepared aggregate sample to give 10 per cent material passing a specified sieve after crushing. The aggregate crushing value acv provides relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Determination of aggregate impact value impact test.
The aggregate crushing value is defined as the ratio of the weight of fines passing through specified is here 2. This test is very similar to aggregate crushing test in which a standard force 400kn is applied and fines material expressed as a percentage of the original mass is the aggregate crushing value. View notes aggregate crushing value from civil eng cive3259d at university of mauritius. Aggregate crushing value 1 construction aggregate economic.
Material testing equipment matest matest is the world leading manufacturer of testing equipment for concrete, cement, mortar, bitumen, asphalt, soil, aggregates, rocks and steel. Aggregate crushing value test procedure and result. Methods of test for aggregates for concrete, part 4. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, maximum crushing value of good quality of aggregate, quarry, aggregate, and different kinds of minerals. Aggregate crushing value significance ftmlie heavy machinery. Determination of aggregate impact value impact test on aggregates is done to carry out to. The process of concrete mix design and determination of aggregate crushing value according to aci 211. Note 1 the aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Aggregate crushing value can be found by the following formula, aggregate crushing value is determined by taking a percentage of weight crushed aggregate sample passing through 2. The standard aggregate impact test shall be made on aggregate passing a 14. The aggregate crushing value give a relative measure of the resistance of. In this case repeat the test on two further specimens, calculate the median of the four results to the nearest whole number and report the median as the aggregate crushing value.
Maximum crushing value of good quality of aggregate. Aggregate crushing value acv civil engineering laboratory. Report the mean as the aggregate crushing value, unless the individual results differ by more than 0. This part of bs 812 describes a method for the determination of the aggregate crushing value acv which gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. This gives a relative measure of the resistance of the aggregate crushing under the gradually applied compressive load. Learn more determination of aggregate impact value impact test. Determine the aggregate crushing value of coarse aggregate. Specifies a method for the determination of the aggregate crushing value acv which gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Whether it is preferable if the aggregate crushing value is exactly 30% in construction of cc pavement. Aggregate impact and crushing test linkedin slideshare. To achieve a high quality of pavement, aggregate possessing low aggregate crushing value should be preferred.
Maximum crushing value of good quality of aggregate products. This british standard, a part of the bs 812 series, describes a method for the determination of the aggregate crushing value acv which gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Methods for determination of aggregate crushing value acv partially superseded but remains current bs 812110. What is the significance of ten percent fines value in. Doc aggregate crushing value test lab report adnan. Conclution of determination of aggregate impact value test. Assess their suitability in road construction on the basis of impact value. Crushing value is a measure of the strength of the aggregate. Ce 354 transportation engineering sessional i lab manual. Assess suitability of coarse aggregates for use in different types of road. With aggregate of aggregate impact value higher than 30 the result may be anomalous.
Methods for determination of aggregate crushing value acv method for aggregates passing a 14. The method is applicable to aggregates passing a 14. Aggregate impact value the aggregate impact value gives a relative measure of the toughness or the resistance of aggregate sudden shock or impact is not proportional to the resistance to a slowly applied compressive load. Methods for determination of particle shape flakiness index. Aggregate crushing value crushingtest of coarse aggregate. The stress level at the contact points of aggregate particles is quite high. The aggregates should therefore have minimum crushing value. Determination of aggregate crushing value for standard. Partially replaced or revised by new document supplement. Equipment for the test are classified as out of service, and. Granular subbase is subjected to repeated loadings from truck types. Pdf this paper reports an experimental investigation carried out to.
Aggregate crushing value test provides strength of aggregates for resistance against crushing under loads and is used for roads and pavements. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from its resistance to a slow compression load. W1 weigh of the total aggregates wawe w2 weigh of aggregates passing through 2. The aggregate crushing value provides a relative measure of resistance to crushing. Determination of aggregate impact value impact test on aggregates. The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load crushing value is a measure of the strength of the aggregate the aggregates should therefore have minimum crushing value 3 apparatus. Doc aggregate crushing value test lab report adnan abir. Also, aggregate sizes larger than 14 mm are not appropriate to the aggregate impact test. How to determine the aggregate crushing strength value in. Theory the aggregate crushing value gives a relative measure of the resistance of aggregate in bulk to crushing under a gradually applied compressive load. Aiv test is conducted to determine the aggregate impact value of coarse aggregate. Aggregate crushing value acv gives an relative measure how the aggregate act under an gradually acting compressive load.
This document gives the determination of aggregate crushing value acv of aggregates. Determination aggregate crushing value theory crusher south africa. The aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load. The aggregate crushing value 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. Methods for determination of aggregate crushing value acv code. Aggregate crushing value 1 free download as word doc. The strength of coarse aggregates is assessed by aggregates crushing test. The mean of two result to nearest whole number is the aggregate crushing value. Aggregate crushing value test determine aggregate crushing.