The aggregate impact value is a measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load. Procedure o f Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100110 C for a period of 4 hours and cooled.Get Price
Application of Aggregate Impact Value. The aggregate impact test is considered to be an important test to assess the suitability of aggregates as regards the toughness for use in pavement construction. It has been found that for majority of aggregates, the aggregate crushing and aggregate impact values are numerically similar within close limits.
The aim of aggregate impact test is to determine the relative measure of the resistance of aggregate to sudden shock or impact in which in some aggregate differs from its resistance to a slowly applies compressive load. The property of a material
which is dependent on the aggregates impact resistance. This degree is assessed by a sieving test on the impacted specimen and is taken as the aggregate impact value. 7.6.3 Sampling. The sample used for this test shall be taken in accordance with Chapter 2. 7.6.4 Equipment 18.104.22.168 Impact testing machine. The machine shall be of the general
aggregate samples to calculate the LA abrasion loss. The authors found that the LA abrasion test was a consistent method of detecting weak materials and was a means of pre dicting aggregate impact value and aggregate crushing value. Wylde 11 reviewed and investigated the road failures,
Classification of aggregates using Aggregate Impact Value is as given below Aggregate Impact Value Classification lt20. Exceptionally Strong 10 20 .Strong 2030. Satisfactory for road surfacing gt35. Weak for road surfacing 5. 5 APPARATUS 1. Aggregate Impact Value Test Machine 2. BS test sieve 3. A metal tamping rod 4.
Aggregate Impact Values, AIVs, below 10 are regarded as strong, and AIVs above 35 would normally be regarded as too weak for use in road surfaces. Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar, and indicate similar aggregate strength properties. Recommended Aggregate Impact Test Values
Aggregate Impact Value Test Specifications Aggregate Impact Value. The test sample shall consist of aggregates the whole of which passes through in B.S. test sieve and is retained on a 38 in B.S. test sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100110 C and
Aggregate impact and crushing test SlideShare. Feb 8, 2012 PROCEDURE Aggregate Impact Value SS 19741. DISCUSSIONa Report the geological description of the aggregate, the source quarry
design by Dri Sirly for Prezi AGGREGATE IMPACT TEST In conclusion,the percentage of aggregates wear depends on the quality of aggregate. In this test, we can conclude that The loss of aggregate 1663 g The percentage of wear 33.26 Lower abrasion loss values indicate the
The aggregate impact value is a measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load. Procedure o f Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100110 C for a period of 4 hours and cooled.
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 SmallSize Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine.
AGGREGATE IMPACT TEST TABLE 12.1 Maximom Allowable Impact Value of Aggregate in Different Types of Pavement MaterialLayers Aggregate impact value, maximum, Water bound macadam WBM. subbase course Cement concrete, base course as per 151 i WBM base course with bitumen surfacing ij Builtup spray grout, base course Bituminous macadam
Aggregate impact value W1W2100. Aggregates to be used for wearing course, the impact value shouldnt 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 Test Procedure of Aggregates. 4.
Impact value of an aggregate is the percentage loss of weight particles passing 2.36mm sieve by the application of load by means of 15 blows of standard hammer and drop, under specified test condition. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates
This test is done to determine the aggregate impact value of coarse aggregates as per IS 2386 Part IV 1963. The apparatus used for determining aggregate impact value of coarse aggregates is. Impact testing machine conforming to IS 2386 Part IV 1963,IS Sieves of sizes 12.5mm, 10mm and 2.36mm, A cylindrical metal measure of 75mm
5.1 Impact Value, as determined using the standard 4.5 kg 10 lbm hammer, has direct application to design and construction of pavements and a general application to earthworks compaction control and evaluation of strength characteristics of a wide range of materials, such as soils, soil aggregates, stabilized soil and recreational turf. Impact Value is one of the properties used to evaluate
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AASHTOO T104 Soundness of aggregate for sudium sulfate Duration 1442. Hammad Raza Royal Material Testing Laboratory CTL 926 views
AIV test is conducted to determine the Aggregate Impact Value of Coarse 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 compression load. The Indian Standard CODE IS 2386 Part IV 1963 is used for
Aggregate impact value test gives an indication of aggregates toughness property i.e. property of a material to resist impact Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value Toughness Properties lt10 Exceptionally tough Strong 10 20 Very tough Strong