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 …
The test sample retained and passing on 2.36mm test sieve shall then be weighed. Calculate the weight of test sample passing 2.36mm sieve with the weight of whole test sample filled in the cup and report test results. Datasheet for …
This Characteristic is measured by impact value test. 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. Apparatus: 1. Impact Testing Machine: Impact testing machine conforming to IS: 2386 (Part IV) -
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 …
Round the result to the nearest whole number, and report the mean of two observations as the Aggregate Impact Value. What do the AIV values mean? Here are the recommended Aggregate Impact Test values and their corresponding classifications: Aggregate Impact Value Classification. Less than 20%: Exceptionally strong. Between …
Objective: 1. Determine the aggregate crushing value of coarse aggregate. 2. Assess suitability of coarse aggregates for use in different types of road. Theory: The " aggregate crushing value " give a relative measure of the resistance of
The apparatus of the aggregate impact value test as per IS: 2386 (Part IV) – 1963 consists of: 7) A testing machine weighing 45 to 60 kg and having a metal base with a plane lower surface of not less than 30 cm in diameter. It is supported on level and plane concrete
If the total weight (B+C) is less than the initial weight (A), the result shall be discarded and a fresh test made. Aggregate Impact Value (AIV) = B/A x 100. Where B = weight of aggregate passing through 2.36 mm sieve. A = …
The method of aggregate test specifies the procedure for determining the aggregate impact value of coarse aggregate. Aggregate impact value is used to classify the stones in respect of their toughness property as indicated below: <10% Exceptionally strong. 10-20% Strong. 20-30% Satisfactory for road surfacing. 35% Weak for road surfacing. The ...
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. …
Procedure The aggregate sample: The material for the standard test consists of aggregates sized 10.0 mm to 12.5 mm.The aggregates must be in a surface dry condition before testing. The aggregates may be dried by heating at 100 oC – 110 o C for not more than 4 hours and cooled to room temperature before testing, if necessary.
Impact value of an aggregate is the percentage loss pf weight of particles passing 2 sieve by the application on load by mean of 15 blows of standard hammer and drop under specified test condition. The aggregate impact value gives a relation measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates …
Read More: Aggregate Testing | 7 Test On Aggregates | Coarse Aggregate Test. Aggregate Crushing Value Test Result. For accurate test results conduct the test at least 3 times and take an average of 3 values. Aggregate Crushing Value Test Lab Report. Aggregate Crushing Value Limits for Road Pavement
applied compressive load. With aggregate of aggregate impact value (AIV) higher than 30 the result may be anomalous. In addition, aggregate sizes larger than 15 mm are not appropriate to the aggregate impact test. The standard aggregate impact test shall be made on aggregate passing a 15 mm BS test sieve and retained on a 10 mm BS test …
If the aggregates are weak, the stability of the concrete structure is adversely affected. The strength of coarse aggregates is assessed by Aggregate Impact Value test. The aggregate impact value provides a relative measure of resistance to sudden shock or impact. APPARATUS 1. Aggregate impact testing machine 2. …
Aggregate Impact Value Test (AIV) (alternative to ACV) 4. Specific Gravity test . 5. ... Aggregate Impact Value (AIV) Tes t . This test is done as an alternative to ACV. It .
[19,20,21,22,23] Kwek and Awang (2018) [19] Water The aggregate impact value test determines the aggregate's resistance to sudden loading [24], which may differ from the resistance to ...
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 ...
Observations and Calculations Calculate the aggregate impact value (AIV) expressed as a percentage to the first decimal place for each test specimen from the following equation: Where (𝐴𝐼𝑉) = 𝑀2 × 100 𝑀1 M 1 is the mass of the test specimen (in g); M 2 is the mass of the material passing the 2.36 mm test sieve (in g ...
Aggregate impact value (AIV) is the percentage of fines produced from the aggregate sample after subjecting it to a standard amount of impact. It is the percentage loss of weight of particles passing 2 sieve by the application on load by mean of 15 blows of standard hammer and drop under specified test condition.
Read definition, apparatus, IS code, procedure, observations, formula, result and lab report about aggregate impact value test. Apparatus Required for Aggregate Impact Value Test:-Impact …
🕑 Reading time: 1 minuteDetermination of Aggregate Impact Value - Impact Test on Aggregates is done to carry out to: Determine the impact value of the road aggregates, Assess their suitability in road construction on the basis of impact value. Contents:Aggregate Impact Value on Coarse AggregatesApparatus for Aggregate …
It has been found that for majority of aggregates, the aggregate crushing value and aggregate impact values are numerically similar within close limits. For deciding the suitability of soft aggregates in base course construction, aggregate impact test is commonly used. A modified impact test is also often carried out in the case of soft ...
This lab report summarizes an experiment to determine the aggregate impact value (AIV) of a sample. The AIV test subjects aggregate samples to standard impacts from a …
Summary. Article Name. Aggregate Impact Test Procedure for Determining AIV as Per IS 2386 Part-4. Description. The Aggregate impact test is used to determine the aggregate impact value (AIV), which provides a …
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. The strength of coarse aggregates is assessed by aggregates impact test.
The aggregate impact value is the proportion of the sample that passes a 2.36 mm sieve after the hammer impacts. European Standards will not contain the 10 per cent fines test or the aggregate impact value test (although a different impact test, the German Schlagversuch test, has been included).
Aggregate impact value test - Download as a PDF or view online for free Submit Search Submit Search. Upload. Aggregate impact value test. Jun 13, 2012 • Download as DOCX, PDF • 12 likes • 23,459 views. AI-enhanced description ... Report. Share. Report. Share. 1 of 1. Download now. Recommended. Aggregate impact value …
Objective. To estimate the aggregate impact value of given sample. IS Standards used:IS: 2386(Part-4)-1963 Need and scope: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.The …
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 …