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. ... using the tamping rod as a straight ...

One of the model in which pavement material can fail is by crushing under compressive stress. A test is Standardized by IS:2386 part-IV and used to determine the crushing strength of aggregates. The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load.

Aggregate Crushing Value Procedure to determine Aggregate Crushing Value i The aggregates passing through 125mm and retained on 10mm IS Sieve are ovendried at a temperature of 100 to 110 o C for 3 to 4hrs ii The cylinder of the apparatus is filled in 3 layers each layer tamped with 25 strokes of a tamping rod iii. Learn More Aggregate Crushing ...

Calculate Aggregate Crushing Value. 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 = W B W …

c) Fill the measure to overflowing with the aggregate using a scoop. Tamp the aggregate with 25 blows of the rounded end of the tamping rod, each blow being given by allowing the tamping rod to fall freely from a height of about 50 mm above the surface of the aggregate and the blows being distributed evenly over the surface.

Aggregate Crushing Value (ACV) and Ten Percent Fines Value (TFV) Comprising of 150 mm nominal diameter steel cylinder, plunger and base plate supplied complete with metal measure and tamping rod. Further Information

The Aggregate Crushing Value Test is a numerical index of the resistance of an aggregate to crushing under a gradually applied compressive load. ... Strike off the surplus aggregate using tamping rod as straight edge. Step-4 : Weigh the container full of aggregate. ... Limits of aggregate crushing value for different types of road construction.

Jul 11, 2018· AGGREGATE CRUSHING VALUE TEST AIM: To find Aggregate Crushing value of the given aggregate sample. APPARATUS: Steel cylinder, cylindrical measure, Steel temping rod, Balance, Compressions testing machine PROCEDURE: The aggregate passing 12.5 mm sieve and retained on 10 mm IS sieve is selected for standard test. The aggregate should be …

Nov 03, 2013· AGGREGATE CRUSHING VALUE TEST. AIM. ... Compact the material by giving 25 gentle blows with rounded end tamping rod. Add 2 more layers in similar manner, such that the cylinder is full. ... depending on its proposed use inthe pavement layers. Specified limits of percent aggregate crushing value for different types of road construction s given ...

1) To determine the aggregate crushing value of coarse aggregates 2) To assess suitability of aggregates for use in different types of road pavement 2. PRINCIPLE 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

May 08, 2013· The aggregate to be tested is dried in oven for a period of not less than 4 hours. Procedure. The cylindrical steel cup is filled with 3 equal layers of aggregate and each layer is tamped 25 strokes by the rounded end of tamping rod and the surplus aggregate struck off, using the tamping rod as a straight edge.

Aggregate Crushing Value and Its Test Procedure: One of the test in which concrete material can fail is due to crushing under compressive stress. Aggregate crushing test is standardized by IS: 2386 part-IV and used to verify the crushing strength of aggregates. The aggregates should be oven dried, which can passes through 12.5mm and retained on ...

Apr 20, 2020· The crushing strength or aggregate crushing value of a given road aggregate is found out as per IS-2386 Part- 4. 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.

Aggregate Crushing Value Test Apparatus ... resistance etc., of aggregates are tested using different types of Aggregate Testing Equipment. ... a cylindrical measure of 75mm dia x 50mm depth, an automatic blow counter and a tamping rod.

For this reason assessment of strength of the aggregate is made by using a sample of bulk aggregate in a standardized manner. This testing method is known as an aggregate crushing value test. Aggregate crushing value provides the resistance of an aggregate sample to crushing under gradually applied compressive load.

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 is …

Buy AGGREGATE CRUSHING VALUE APPARATUS at an affordable price. get price, quote for lab equipment. Information, Specifications & Reviews for AGGREGATE CRUSHING VALUE APPARATUS The aggregate crushing value provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load.

The Aggregate Crushing Value Test is a numerical index of the resistance of an aggregate to crushing under a gradually applied compressive load. Strike off the surplus aggregate using tamping rod as straight edge. Step-4 : Weigh the container full of aggregate. Limits of aggregate crushing value for different types of road construction ...

Oct 01, 2016· Crushing value of aggregate is a relative measure of resistance of an aggregate to crushing under gradually applied crushing load. 3. Aggregate passing through 12.5 mm sieve and retained on 10mm sieve is taken. About 6.5 kg of surface dry aggregate filled in the standard cylinder in three layers, tamping each layer 25 times by a standard ...

Jan 04, 2014· Procedure of testing Aggregate Crushing Value (ACV): 1. Make a sieve analysis and get sufficient amount of aggregate by using 14.0 mm passing sieve and 10.00 mm retained sieve. 2. After sieving fill the cylinder in thre layers by the aggregate and apply 25 blows by the tamping rod with a approximate height of 50 mm. 3.

Nov 03, 2013· AGGREGATE CRUSHING VALUE TEST. AIM. ... Compact the material by giving 25 gentle blows with rounded end tamping rod. Add 2 more layers in similar manner, such that the cylinder is full. ... depending on its proposed use inthe pavement layers. Specified limits of percent aggregate crushing value for different types of road construction s given ...

Jan 23, 2018· The aggregate crushing value for cement concrete pavement shall not exceed 30%. The aggregate crushing value for wearing surfaces shall not exceed 45%. PURPOSE OF TEST: The strength of coarse aggregate is assessed by aggregate crushing test, the aggregate value provide the relative measure of resistance to crushing under gradually …