aggregate abrasion value test procedure

Los Angeles Abrasion Test on Aggregate - gharpedia.com

This value is called as Los Angeles abrasion value. The maximum Los Angeles abrasion value should not be more than 30% for the use of wearing surface and not more than 50% for the use of concrete. Table 1 below presents the average Los Angeles abrasion test value for rocks of different groups.

Aggregate Abrasion Value Test (IS: 2386 (Part IV))

Aggregate Abrasion Value Test (IS: 2386 (Part IV)) The abrasion value of coarse aggregate may be determined by either Deval Machine or by Los Angeles machine. Using Deval Machine . Abrasive Charge: The abrasive charge consists of 6 cast iron or steel spheres approximately 48 mm in diameter, each weighing between 390 and 445 g.

Standard Test Method for Resistance of Fine Aggregate to ...

5.1 The Micro-Deval abrasion test is a test of fine aggregate to determine abrasion loss in the presence of water and an abrasive charge. Many aggregates are more susceptible to abrasion when wet than dry, and the use of water in this test incorporates this reduction in resistance to degradation.

Aggregate Abrasion Test » Engineering Basic

Mar 16, 2018· PROCEDURES. 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 & y is pour above into the machine. 2. The abrasion charges is place on the sample and the cover is fix back firmly. 3. The machine is switch on and it is allow to undergo 500 revolutions at ...

Aggregate Abrasion Value Calculator, los angeles abrasion ...

Test Procedure. The test sample and the abrasive charge shall be placed in the Los Angeles abrasion testing machine and the machine rotated at a speed of 20 to 33 rev/min. For gradings A, B, C and D, the machine shall be rotated for 500 revolutions; for gradings E, F and G, it shall be rotated for 1000 revolutions. ... Aggregate Abrasion Value ...

Los Angeles Abrasion Test Procedure, Apparatus ...

The Los Angeles test is a measure of degradation of mineral aggregates of standard gradings resulting from a combination of actions including abrasion or attrition, impact, and grinding in a rotating steel drum containing a specified number of steel spheres. The Los Angeles (L.A.) abrasion test is a common test method used to indicate aggregate toughness and abrasion

Laboratory Tests for Predicting Coarse Aggregate ...

1. Unconfined freeze-thaw test for coarse aggregate (MTO LS-614), 2. Micro-Deval abrasion test (BNQ 2560-070/82), 3. Aggregate impact vuluc test (BS 812), 4. Polished stone value test (BS 812), and 5. Aggregate abrasion value test (BS 812). The evaluation of the conventional and the alternative tests

AGGREGATE ABRASION VALUE MACHINE - AAV - Dorry ... - …

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.

Aggregate Crushing Value Test - YouTube

Mar 24, 2013· Los Angeles Abrasion Value Test - Duration: 17:01 ... The Neals' Homestead 4,123,475 views. 21:44. FIELD DRY DENSITY BY SAND REPLACEMENT METHOD ... Aggregate Impact Value …

7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN …

Improved mechanical resistance to wear is a key requirement of a wide range of ...

Procuder of Los Angeles Abrasion(LAA) Test

The Los Angeles (L.A.) abrasion test is a common test method used to indicate aggregate toughness and abrasion characteristics. Aggregate abrasion characteristics are important because the constituent aggregate in HMA must resist crushing, degradation and disintegration in order to produce a high quality HMA. Apparatus: Steel Spherical Balls

Chapter 3 - Aggregate Sampling, Testing, and Quality ...

Mineral Aggregate Characteristics Test Method Requirement Combined Bulk Oven Dry Specific Gravity Arizona Test Method 251 2.350â 2.850 Combined Water Absorption Arizona Test Method 251 0â 2.5% Abrasion AASHTO T 96 100 Rev., Max 9%500 Rev., Max 40% Sand Equivalent AASHTO T 176 (After thoroughly sieving the sample, no additional cleaning of the ...

Aggregate Abrasion Value - Civil Engineering

Procedure to determine Aggregate Abrasion Value The test sample and the abrasive charge should be placed in the Los Angles abrasion testing machine and the machine rotated at a speed of 20 to 33 revolutions/minute for 1000 revolutions. At the completion of the test, the material should be discharged and sieved through 1.70mm IS Sieve.

Aggregate Abrasion Testing (Part 2): The L.A. Abrasion ...

Aggregate Abrasion Testing (Part 2): The L.A. Abrasion Test In the last installment of our Abrasion Testing series, we wrote about the importance and use of the Micro-Deval Test Method . An equally important method for abrasion testing is the Los Angeles (L.A.) Abrasion test.

A new practical method for determining the LA abrasion ...

The LA abrasion method suffers from several drawbacks including the time needed to perform the test, the operational noise and dust and the space required by the machine. The objective of this study was to investigate whether the modified compaction method can be a suitable alternative for determining the LA abrasion value.

CIVIL ENGINEERING MATERIAL TESTING: AGGREGATE ABRASION VALUE

Sep 18, 2017· The difference between the original weight and the final weight of the test sample is expressed as a percentage of the original weight of the test sample. REPORT The mean of the two results is reported to the nearest whole number as the aggregate abrasion value of the tested material.

Los Angeles Abrasion Test Procedure for Aggregates - Civil4M

Jan 25, 2018· Let the original weight of aggregate = W1 g Weight of aggregate retained on 1.70 mm IS sieve after the test = W2 g Loss in weight due to wear = (W1-W2) g Los Angeles abrasion value, % = Percentage wear = (W1-W2) x 100W1 RESULT: The result of the Los Angeles abrasion test is expressed as a percentage wear and the average value of two tests may ...

Aggregate: Mechanical Properties of Aggregate | Concrete ...

This value should not be more 30% for aggregate to be used in concrete for wearing surfaces as road and 45% for other type of concrete. Property # 2. Hardness: It is defined as the resistance to wear by abrasion, and the aggregate abrasion value is defined as the percentage loss in weight on abrasion.

AGGREGATE ABRASION VALUE (IS:2386-Part 4-1963 ...

May 08, 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 …

Civil Engineering: Aggregate abrasion value test

Dec 08, 2017· Resistance to wear offered by aggregate is termed as "aggregate abrasion value". Los Angeles abrasion test on aggregates is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration.

Abrasion Test on Aggregate (Los Angeles Test) - Civiconcepts

Introduction: Abrasion Test is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. This test is suggested by AASHTO T 96 or ASTM C 131: Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in …

Los Angeles Abrasion - Pavement Interactive

LOS ANGELES ABRASION VALUE OF AGGREGATE 1.Objective Abrasion test is carried out to test the hardness property of aggregates. The principle of Los Angeles abrasion test is to find the percentage wear due to relative rubbing action between the aggregate and steel balls used as abrasive charge. 2.Apparatus Required Fig. 1: Balance

Los Angeles Abrasion Test on Aggregates -Values for ...

Los Angeles abrasion test on aggregates is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. This test is carried out by AASHTO T 96 or ASTM C 131: Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion …

Aggregate Crushing Value Test – Determine Aggregate ...

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 ...

LOS ANGELES ABRASION VALUE OF AGGREGATE

LOS ANGELES ABRASION VALUE OF AGGREGATE 1.Objective Abrasion test is carried out to test the hardness property of aggregates. The principle of Los Angeles abrasion test is to find the percentage wear due to relative rubbing action between the aggregate and steel balls used as abrasive charge. 2.Apparatus Required Fig. 1: Balance

Los Angeles Abrasion Test Procedure, Method, Significance ...

The %age wear due to rubbing with steel balls is determined and is known as abrasion value. Prepare the sample by the portion of an aggregate sample retained on the 1.70 mm (No. 12) sieve and place in a large rotating drum that contains a shelf plate attached to the outer wall. Procedure of the LA Abrasion Test: Prepared sample is placed in the ...

ASTM C131 / C131M - 14 Standard Test Method for Resistance ...

Note 1: A procedure for testing coarse aggregate larger than 19.0 mm [3 / 4 in.] is covered in Test Method C535. Thus coarse aggregates with a maximum size between 19 mm [3 / 4 in.] and 37.5 mm [1 1 / 2 in.] may be tested by Test Method C535 or Test Method C131/C131M.

Dorry Abrasion Machine to BS812-113 EN1097-8 - Impact Test

The test gives a measure of the resistance of aggregate to surface wear by abrasion. The Dorry Abrasion Test was superseded in 1951 by the current AAV test. Inadequate abrasion resistance of road-surfacing aggregates means an early loss of the texture depth required to maintain high-speed skidding resistance. Test Procedure

Los Angeles Abrasion Value Test - YouTube

Sep 08, 2015· Los Angeles Abrasion Value Test BPUT Digital Learning Resources ... Determination of Aggregate Impact Value ... Determination of Dry Density of Soil by Sand Replacement Method - Duration: 13:46 ...

Manual of Aggregate Quality Test Procedures

The Manual of Aggregate Quality Test Procedures will be reviewed by the Aggregate ... Aggregate by Abrasion and Impact in the Los Angeles ... 3.2 The principal value of this test method is to furnish a warning that organic impurities may be present. When a sample subjected to this test produces a …