The aggregates used in different construction works such as roads, buildings, pavement etc. So many different kinds of tests are applied on coarse aggregates such as the impact values test, crushing value test, specific gravity test, and sieve analysis test to know its strength.

05/22 · Procedure for finding the crushing value of aggregate. Aggregate passing through a12.5mm I.S. sieve and retained on 10mm I.S. sieve is taken. About 6.5 kg material is taken. The aggregate in a surface dry condition is filled into the standard cylindrical

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. 2.Apparatus Required.

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 The apparatus of the aggregate crushing value test as per IS: 2386 (Part IV) - 1963 consists of:

02/29 · Aggregate Crushing Value Test - Procedure And Result Aggregate Crushing Value Test is important to test to be performed on aggregate. The strength of aggregate parent rock is determined by preparing a cylindrical shape specimens of size 25 mm diameter and 25 mm height.

Feb 08, · Impact, 10% Fines & Crushing TestsQuarry plant such as crushers, screens, conveyors, etc. are all subject to wearand these crushing tests can indicate the magnitude of the problem for designpurposes.PROCEDURE - Aggregate Impact Value (SS 1974)1. The apparatus consists of a steel test mould with a falling hammer as shown in Figure 1.

The standard aggregate crushing test is made on aggregates passing IS 12.5 mm and retains on 10 mm. Place the sample in oven for a period of 4 hrs to make it surface dry

04/02 · The material for the standard test shall consist of aggregate passing a 12.5-mm IS Sieve and retained on a 10-mm IS Sieve, and shall be thoroughly separated on these sieves before testing. For other sizes, the material shall be separated on the appropriate sieves given in below Table

Take a 1kg fine aggregate test sample. Arrange the IS sive in descending 10mm, 4.75mm, 2.36mm, 1.18mm, 600 microns, 300 microns, 150 microns and 75 microns. Now fill the sample to the highest sieve and sieve well for up to 10 minutes. After completion of sieving, then weigh the aggregates retained in each sieve & note it down.

10/04 · The aggregate crushing value is an indirect measure of crushing strength of the aggregates. Low aggregate crushing value indicates strong aggregates, as the crushed fraction is low. Thus the test can be used to assess the suitability of aggregates with reference to the crushing strength for various types of pavement components.

The aggregate crushing value provides a relative measure of the resistance of an aggregate to crushing under gradually applied crushing load. The aggregate crushing value test is a useful guide when dealing with aggregates of unknown performance, particularly when lower strength is suspected.