Determination of Aggregate Impact Value Impact Test on Aggregates is done to carry out to Assess their suitability in road construction on the basis of impact value. The apparatus as per IS 2386 Part IV 1963 consists of i A testing machine weighing 45 to 60 kg and having a metal base with a painted lower surface of not less thanGet Price
Aggregates form the major portion of the pavement structure. Bear stresses occurring on the roads and have to resist wear due to abrasive action of traffic. Aggregates are also used in flexible as well as in rigid pavements. Therefore, the properties of aggregates are of considerable importance to highway. The aggregates to be used in road construction, particularly
The crushed aggregate is removed from the test specimen and sieve it through the 2.36 mm IS sieve. An impact value is measured as of aggregates passed through the 2.36mm sieve W2 to the total weight of the sample W1. Aggregate impact value The value of aggregate impact test W1W2100
Impact test 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.
AIM To determine the aggregate impact value of coarse aggregates as per IS 2386 Part IV 1963. APPARATUS i Impact testing machine conforming to IS 2386 Part IV 1963 ii IS Sieves of sizes 12.5mm, 10mm and 2.36mm iii A cylindrical metal measure of 75mm dia. and 50mm depth iv A tamping
Impact Test on Aggregates. Impact value of aggregate will give aggregate capability against sudden loads or forces. For this test also aggregate passing through 12.5mm and retained on 10mm sieve is taken and oven dried. Fill the cylinder with aggregate in 3 layers, 25 strokes of tamping for each layer. Weight w1 noted.
This test defines the procedures used to obtain samples that will show the nature and condition of the materials which they represent. For equipment specification details consult the current AASHTO edition. REFERENCED DOCUMENTS . AASHTO T 2, Sampling of Aggregates . ND T 248 and AASHTO T 248, Reducing Samples of Aggregate to Testing Size
Determination of Aggregate Impact Value Impact Test on Aggregates is done to carry out to Assess their suitability in road construction on the basis of impact value. The apparatus as per IS 2386 Part IV 1963 consists of i A testing machine weighing 45 to 60 kg and having a metal base with a painted lower surface of not less than
Tests on Aggregate Highway Engineering Flakiness and Elongation test of Aggregate as per IS 2386 Sand replacement method compaction test and calculations road construction Civil
Contents Scope Aggregates Aggregate Classification ASTM C125 Significance of Test Apparatus Procedure Calculations Results Designation Number B.S. 812 Part 112 1990. Scope Testing coarse aggregates for resistance to Impact Aggregates combination of sand, gravel, crushed stone, or other material of mineral compositionNatural aggregates taken from
1 Road Aggregates. 1.1 Aggregate Characterization 1.2 Aggregate Gradation IS23861963 Part I 1.3 Fuller and Thompsons Equation Interactive Equation 1.4 Fineness Modulus 1.5 Aggregate Crushing Value IS 2386 Part IV 1.6 Aggregate Impact Value IS 2386 Part IV 1.7 Impact value 1.8 BITUMEN ADHESION 1.9 Angularity number
Specific Gravity amp Water Absorption of Coarse Aggregate TEST FOR WORKABILITY OF CONCRETE SLUMP CONE Duration 351. UltraTech Cement 910,949 views. 351. DETERMINATION OF AGGREGATE IMPACT
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
Section 12 Roadway Materials Introduction Why do we care about Materials for the roads Roadway materials, and particularly roadway surfacing materials, such as aggregate or paving, can be half the cost of a road. Selection of materials directly affects the function, structural support, rider comfort, environmental impact and safety of the road
Impact Test Fig3 Impact Test Setup. 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.
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 dia. and 50mm depth, A tamping rod of 10mm circular cross section and 230mm length, rounded at one end and Oven.
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 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,
Aggregate Impact Value Test. 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 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 measuring cup shall be filled about onethird with the
5 Aggregate Specifications and Requirements Physical Quality Requirements Fine Aggregates Coarse Aggregates and thaw or sodium sulfate test. An aggregate that fails the freeze and There is a specific requirement for gravel coarse aggregates regarding crushed particles. This requirement applies, however, only when gravel