Flakiness Index Test of Aggregate, Shape Test on Aggregate…
IS: 2386 (Part 1)–1963, Method of test of aggregates for formation of concrete. IS: 383–1970, Specification for coarse and fine aggregate from natural source for formation of concrete. Procedure For The Test Flakiness Index of Coarse Aggregate :-. Sieve the aggregate sample with sieves specified in Table. Take sufficient quantity of ...
Los Angeles Abrasion Test of Aggregates (LA Abrasion Test): …
After the completion of the test, the coarse aggregate is taken out and passed through sieves. 6. The aggregates coarser than 1.7 mm IS sieve are then separated. 7. The retained aggregates are then oven-dried at 105 – 110ºC and finally weighed. 8. The Los Angeles Abrasion Value is then calculated using the following formula:
Flakiness Index Test for Aggregates
Flakiness Index = [W 2 / W 1] x 100. Where, W 2 = Weight passed from 0.6 x d mean size. W 1 = Total weight of aggregates. Flakiness Index of aggregates used in road construction should be less than 15% and normally does not exceed 25%. It is not desirable to use flaky particles in construction of roads especially in surface course.
QUALITY ASSURANCE for AGGREGATES
Aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, As an alternative to crushing value, the aggregate impact value should not exceed 45% by weight for aggregates used for concrete other than for wearing surfaces and 30% by weight for concrete for wearing surfaces, such as runways, roads ...
IS 5640 (1970): Method of test for determining …
1.1 This standard covers the procedure for determining the aggregates impact value of soft coarse aggregate used for bases and sub-bases of road pavements. 2. APPARATUS. 2.0 The apparatus shall consist of the following: · of test for aggregates for concrete: Part IV tRule. for rounding off numerical value. ( rlv;Sld).
Wet Mix Macadam Construction and Quality Control
Los Angeles Abrasion Value or, Aggregate Impact Value: IS 2386 (Part -4) IS 2386 (Part -4) or IS :5640: 40 % (Max.) 30% (Max: 2. ... The second layer of WMM shall then be laid to the limits and compacted. Also, Read: Aggregate Impact Test Procedure for Determining AIV as Per IS 2386 Part-4.
Aggregate Impact value Test Apparatus, …
Procedure of Aggregate Impact value test. The test sample: normally aggregates sized 10.0 mm to 12.5 mm. the aggregates should be dried by heating at 100-110 0C for a period of 4 hours and cooled. Sieve …
IMPACT VALUE OF AGGREGATE
The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from its resistance to a slow compressive load. 2.Apparatus Required Fig. 1: Balance Balance should be accurate upto 1 g Fig. 2: Sieves Seives required are 12.5, 10.0 and 2.36 mm Fig. 3: Impact ...
AGGREGATE IMPACT VALUE TEST-10+ …
Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value (%) Toughness Properties. <10. Exceptionally tough / …
Aggregate Impact Value Test
Aggregate Impact Value (AIV) = B/A x 100. Where B = weight of aggregate passing through 2.36 mm sieve. A = weight of the oven – dried sample. Note. AIV should not be more than 45% for use in concrete other than wearing surfaces, and 30% for concrete used for wearing surfaces such as roads, runways and pavements.
Los Angeles Abrasion Test on Aggregates …
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 …
Flakiness and Elongation Index Test of Coarse …
It is important to keep the amount of flaky and elongated aggregate within permissible levels. Generally, flaky and elongated aggregate are avoided or are limited to about 15 % by the weight of the total aggregate. Read …
Aggregate Impact Value (AIV) — Material Testing Expert
The procedure for conducting an Aggregate Impact Test (AIV) is as follows: Prepare the test sample by selecting aggregates sized between 10.0 mm and 12.5 mm. Dry the aggregates by heating at 100-110° C for 4 hours or until constant mass is achieved, and then cool them.
IS 5640 (1970): Method of test for determining …
1.1 This standard covers the procedure for determining the aggregates impact value of soft coarse aggregate used for bases and sub-bases of road pavements. 2. APPARATUS. …
7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR …
Aggregate impact value = (W1/W2)*100. Aggregates to be used for wearing course, the impact value shouldn't exceed 30 percent. For bituminous macadam the maximum permissible value is 35 percent. For Water bound macadam base courses the maximum permissible value defined by IRC is 40 percent. Also read: Impact Value …
[Solved] The Los Angels abrasion value requirement for …
Los Angeles machine consists of the circular drum of internal diameter 700 mm and length 520 mm mounted on a horizontal axis enabling it to be rotated. An abrasive charge consisting of cast iron spherical balls of 48 mm diameters and weight 340-445g is placed in the cylinder along with the aggregates. The cylinder is then locked and rotated …
[Solved] In the Aggregate impact value test, as per IS: 2386 …
Explanation: According to IS: 2386 (Part IV)- 1963 for the Aggregate Impact Value, the aggregates must pass through 12.5 mm sieve and retain on 10 mm IS sieve. It also gives details regarding the other tests also. Important Points. The permissible limits for aggregate impact values are:
IS 2386-3 (1963): Methods of test for aggregates for …
Is:2386(PartIll)-1963 2.2 Method I - Aggregate Larger than 10 mm 2.2.1 4 b! 4 4 4 f > g> Apparatus - The apparatus shall consist of the following: Balance -A balance or scale of capacity not less than 3 kg, readable and accurate …
GSB Gradation table
Aggregate Impact value. 17.54%. Max. 40%. 5. Maximum Dry Density. 2.18 g/cc--6. ... Frequency of testing Every 20cum or more frequency as decided by engineer in charge Permissible limit Acceptance standard -maximum permissible limit silt content shall not be " more than 8%" as per is code 383 and as per CPWD specification Note: (i) …
permissible value of aggregates impact value
perimisible limits of aggregate impact value report. Determination of Aggregate Impact Value - Impact Test on 22 Feb 2010 Determination of Aggregate Impact Value - Impact Test on Aggregates is done to carry out to Determine the impact value of the road aggregates Assess thei. permissible limits of aggregate impact …
PRODUCT MANUAL FOR COARSE AND FINE …
aggregate reaction test as per clause 5.6, where petrographic analysis is not carried out, if sample is tested and found conforming as per Chemical method [clause 5.6(1)] and ... 4 Aggregate impact value - Impact testing machine [Clause 4.2 (a) and Fig 2 of (Clause 5.4.2) IS 2386 (Part 4) : 1963]
DCC3113 DETERMINATION OF AGGREGATE IMPACT VALUE…
17 likes • 29,532 views. Y. YASMINE HASLAN. LAB REPORT DETERMINATION OF AGGREGATE IMOACT VALUE. Education. 1 of 12. Download now. DCC3113 DETERMINATION OF AGGREGATE IMPACT VALUE. - Download as a PDF or view online for free.
Methodology For Aggregate Impact Value (AIV) Test
The Aggregate Impact Value (AIV) test, outlined in IS 2386 Part IV, evaluates the impact resistance of aggregates. ... (AIV) is 7.5%, which is well below the permissible limit for concrete wearing surfaces (45%) and bituminous concrete (30%). This suggests that the tested aggregate has good resistance to impact.
AGGREGATE IMPACT VALUE TEST-10+ IMPORTANT NOTES …
Maximum allowable aggregate impact value of aggregate in different types of pavement material / layers as per IRC is as below. 13. Aggregate impact …
Determination of Aggregate Impact Value
Procedure of Aggregate Impact Test. The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110° C for a period of 4 hours and cooled. (i) Sieve the material through 12.5 mm and 10.0mm IS sieves. The aggregates passing through 12.5mm sieve and retained on 10.0mm sieve comprises the test material.
Everything you should know about the Aggregate Impact Value …
The aggregate impact value is expressed as the percentage of the fines formed w.r.t the total weight of the sample. Aggregate Impact Value (AIV) = (100*M2)/M1. Where: M1 =Mass of the test specimen. M2 = Mass of …
IRC:109-2015
*Aggregate impact Value: IS:2386(Part IV) or IS:5640) 30 percent (Maximum) 2. ... If the amount of fine aggregate produced during the crushing operation is insufficient, non- ... not vary from the low limit on one sieve to the high limit on the adjacent sieve or the vice versa. The grading can be produced by crushing rock and may be an all-in ...
(DOC) AGGREGATE IMPACT VALUE TEST | hong g.woei
1.0 AGGREGATE IMPACT VALUE TEST 1.0 INTRODUCTION Aggregates used in road construction, should be strong enough to resist crushing under traffic wheel loads if the aggregates are weak, the stability of the pavement structure is likely to be adversely affected. ... than the aggregate crushing values. Various agencies have specified the …
Pavement materials: Aggregates
The aggregate impact test is carried out to evaluate the resistance to impact of aggregates. Aggregates passing 12.5 mm sieve and retained on 10 mm sieve is filled in a cylindrical steel cup of internal dia 10.2 mm and depth 5 cm which is attached to a metal base of impact testing machine. ... And the impact value is measured as percentage of ...