Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load. Coarse …

This indicates that the resistance to the applied compressive load by the aggregate is high. Jethro et al. (2013) obtained a coarse aggregate value of 21.6 % for granite and concluded that the ...

After each layer, tamp 25 times for good compaction. Then take the weight of the cylinder with aggregate. Place the apparatus, with the test sample and plunger in position on the compression testing machine. Apply the compressive load of 40 tons in 10 mins. Then remove the specimen from machine and sieve the aggregates through 2.36 mm.

 · The procedure of Aggregate Crushing Value Test 1. Put the filled cylinder on the horizontal and level base plate and weigh it ( W1) 2. Inserted the plunger horizontally on the surface. Care should be taken that the plunger should not jam in the cylinder. 3. Place the cylinder with a plunger on the compression testing machine. 4.

Set the pointer to read zero and apply the compressive load of 40 tons. Stop the machine. Take out the assembly. Sieve the crushed material on 2.36 mm sieve and find he weight of material passing this sieve. Let the weight be W2 gram. Then Aggregate crushing value=W2 / …

May 05, 2010 · 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 when test aggregates are subjected to a specified load under standardized ...

These tests are a measure of the crushing properties of aggregate and use the same basic equipment. The ACV test requires a standard load of 400 kN to be applied over a period of 10 minutes while the TFV test measures the force required to produce a specified depth of plunger penetration. 150mm Aggregate Crushing Value Apparatus.

 · Load is then applied through the plunger at a uniform rate of 4 tonnes per minute until the total load is 40 tonnes and the load is released. Aggregates including the crushed position are removed from the cylinder …

 · The maximum load obtained from each crushing test ranged between 4.52 and 7.65 kN. When a natural aggregate was crushed, the load decreased suddenly, as shown in Fig. 4. This was confirmed by visual analysis after testing. To determine natural aggregate crushing, a crushing load reduction ratio (C) is defined and proposed in Eq.

The crushing value test of aggregate provides the resistance of an aggregate sample to crushing under gradually applied compressive load. Generally, the test is conducted on …

This test is carried out on a brick work with the mortar This brick work is crushed in a compression testing machine and the load is noted down Then the crushing strength is obtained as load divided by crosssectional area Crushing Strength = Load / Crosssecrional Area [2] TENSILE STRENGTH TEST Aggregate Crushing value is a relative resistance ...

The 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 …

The crushing value test of aggregate provides the resistance of an aggregate sample to crushing under a gradually applied compressive load.. Generally, the test is conducted on aggregate passing 12.5 mm and retained on a 10 mm sieve.The aggregate sample is filled in a cylindrical mold and a load of 40 tons is applied through a plunger in a compression …

 · 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 …

 · The aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load. To achieve a high quality of pavement, aggregate possessing low aggregate crushing value should be preferred. Object: To determine the aggregate crushing value by compressive testing machine.

 · Procedure: –. i) The aggregates passing through 12.5mm and retained on 10mm IS Sieve are oven-dried at a temperature of 100 to 110 Degree C for 3 to 4hrs. ii) …

 · Aggregate_crushing_value_Test_Lab_Report[1].docx - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. ... Apply load at a uniform rate so that a total load of 40KN is applied in 10 minutes. 6) Release the load and remove the material from the cylinder. 7) Sieve the material with 2.36mm IS sieve ...

Aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. The aggregate crushing value should not exceed 45% for aggregate used for concrete other than for wearing surfaces, and 30 % for concrete for wearing surfaces, such as runways, roads

This test is carried out to determine the aggregate crushing value using a compressive testing machine Equipments and Materials Needed The equipments and materials needed for aggregate crushing test are: Compressive Testing Machine capable of applying load of 40 tonnes, at a uniform rate of loading of 4 tonnes per minute.