Aggregate abrasion value aav this test sorts out aggregates which might be strong but are not resistant to the abrasive action of vehicle tyres if used in the surface course of roads, i., though suitable in every other respect, they wear-out too quickly in use.
The percentage loss in mass of chippings as known as the 'Aggregate Abrasion Value' (AAV), and ranges from about 1 for hard flints to over 16 for aggregates normally considered too soft for use in road surfacings. Related Test The PSV test (Polished Stone Value) requires an AAV determination when PSV is greater than 60.
21-08-2020· AGGREGATE ABRASION VALUE This test helps to determine the abrasion value of coarse aggregates as per IS: 2386 (Part IV) 1963. The apparatus used in this test are Los Angles abrasion testing machine, IS Sieve of size 1.7mm, Abrasive charge 12 nos. cast iron or steel spheres approximately 48mm dia. and each weighing between 390 and 445g ensuring that the total weight of
AGGREGATE ABRASION VALUE This test helps to determine the abrasion value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used in this test are Los Angles abrasion testing machine, IS Sieve of size – 1.7mm, Abrasive charge – 12 nos. cast iron or steel spheres approximately 48mm dia. and each weighing between 390 and 445g ensuring that the total weight of …
significance of aggregate abrasion value. significance of aggregate abrasion value, Mining & World Quarry . Los Angeles Abrasion, Pavement Interactive . 21 Apr 2011 Aggregate abrasion …
aggregate abrasion value This test helps to determine the abrasion value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used in this test are Los Angles abrasion testing machine, IS Sieve of size – 1.7mm, Abrasive charge – 12 nos. …
Aggregate Abrasion Value Bs. Is 2386 part iv - 1963 2.2 apparatus - the apparatus for the standard test shall consist of following a a 15-cm diameter open-ended steel cylinder, with plunger and base-plate, of the general form and dimensions shown in fig.1.
Significance Of Aggregate Abrasion Value. Effect of rock properties on the los angeles abrasion and impact test characteristics of the aggregatesuthor links open overlay panel igur semirdag h al-harthi found meaningfull correlation among the laai value of aggregate, astmresistance to degradation of small-size coarse aggregate by abrasion and mpact in the los angeles.
08-05-2013· Objective For determination of the aggregate abrasion value of coarse aggregate. Reference Standards IS: 2386 (Part IV)-1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment & Apparatus Los Angeles machines Sieves (1.70mm) Cylindrical metal measure Tamping Rod Balance (0-10kg) Oven (3000c) Preparation sample Test sample is …
Aggregate abrasion value Abrasion resistance.The resistance of aggregates to abrasion is measured in terms of the aggregate abrasion value and the polished stone value (see section 6.4.3). An alternative measure is the Bond Work Index [3.3], which ranges from 4 kW-hr/t for soft limestones, to about 10 for typical dense limestones. Part 113 Method for determination of aggregate abrasion value ...
The aggregate impact value test is carried out to know the response of aggregates to different kinds of loads that the aggregates will be subjected to during their service life. Impact Value. It is the ability of aggregates that resist sudden impact or shock load on it. Also, it can be defined as the resistance of aggregate to failure by impact ...
Aggregate Abrasion Test » Engineering Basic ProceduresApparatusData and CalculationPrecautionsPossible Errors To carry out the aggregate abrasion value test, the following are the procedures used: 1. The cover of the machine is remove and the sample x …
01-10-2020· aggregate abrasion value This test helps to determine the abrasion value of coarse aggregates as per IS: 2386 (Part IV) 1963. The apparatus used in this test are Los Angles abrasion testing machine, IS Sieve of size 1.7mm, Abrasive charge 12 nos. cast iron or steel spheres approximately 48mm dia. and each weighing between 390 and 445g ensuring that the total weight of …
The aggregates are used for surface course of the highway pavements and they are subjected to wearing due to traffic.When vehicles travel on the road, the soil particles present between the pneumatic tyres of vehicle and road surface creates the a...
Home full details of aggregate abrasion value test in doc file Testing Of Aggregates 5.1 This test method assigns an empirical value to the relative amount, fineness, and character of claylike material present in the test specimen. 5.2 A minimum sand equivalent value may be specified to limit the permissible quantity of claylike or clay size fines in an aggregate.
The percentage loss in mass of chippings as known as the 'Aggregate Abrasion Value' (AAV), and ranges from about 1 for hard flints to over 16 for aggregates normally considered too soft for use in road surfacings. Related Test The PSV test (Polished Stone Value…
The Abrasion Machine is used to determine the Aggregate Abrasion Value (AAV) by testing the measure of the resistance of aggregates to surface wear by abrasion. The Abrasion Machine consists of a flat circular cast iron grinding lap wheel of 600 mm dia. which rotates in a …
AGGREGATE ABRASION VALUE This test helps to determine the abrasion value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used in this test are Los Angles abrasion testing machine, IS Sieve of size – 1.7mm, Abrasive charge – 12 nos. cast iron or steel spheres approximately 48mm dia. and each weighing between 390 and 445g ensuring that the total weight of …
Calculate Aggregate Abrasion Value. Difference between the original weight and the final weight of the test sample shall be expressed as a percentage of the original weight of the test sample. This value shall be reported as the percentage of wear. Aggregate Abrasion Value = W A - W B W A × 100
Observations of Los Angeles Test Original weight of aggregate sample = W 1 g Weight of aggregate sample retained = W 2 g Weight passing 1.7mm IS sieve = W 1 - W 2 g Abrasion Value = (W 1 - W 2 ) / W 1 X 100 Results Los Angeles Abrasion Value = Recommended Los Angeles Test Values for Pavements Los Angeles test is commonly used to evaluate the hardness of aggregates.
30-03-2020· Trail 2. Total weight of dry sample taken= W1 g. Weight of portion passing 1.7 mm sieve= W2 g. Aggregate abrasion value = (W2/W1) x 100 (%) Los Angeles Abrasion Testing Machine.
Aggregate Abrasion Value (Based on IS.-2386 part IV-1963) 1 Apparatus. 1.1 The abrasion test for track ballast shall be carried out using Los-Angeles machine as per fig -1. 1.2 1.3 IS sieves of sizes 50mm, 40mm, 25mm and 1.70mm. 1.4 Drying Oven. 2. Test Sample