Determination of Aggregate Impact Value – Impact Test …
Specified limits of percent aggregate impact value for different types of road construction by Indian Roads Congress is given below.
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DETERMINATION OF AGGREGATE CRUSHING VALUE
Due to movement of vehicles on the road the aggregates are subjected to impact resulting in their breaking down into smaller pieces. The aggregates should therefore have sufficient toughness to resist their disintegration due to impact. This characteristic is measured by impact value test.
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(PDF) Prediction of Aggregate Impact Values and …
Crushing test and Impact test are very important to estimate strength and toughness characteristics of the road aggregate. Extensive experimental procedures and different sets of equipment are...
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Aggregate Impact Value (AIV) ASTM-D58-74
Aggregate Impact Value report.docx - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. The document describes the Aggregate Impact Value (AIV) test outlined in ASTM-D58-74. The test …
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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 ...
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IMPACT STRENGTH OF BRITTLE MATERIALS (ROCKS)
the AIVtest (Aggregate Impact Value) used for the determination of the strength of brittle materials (rocks) in impact and compression stresses. The materials, whose impact strength is tested, are limestone, emery and quartzite.
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7.6 Aggregate Impact Value 7.6.1 Scope.
Guide to minimum mass of test portions required to obtain a suitable mass of material to determine the aggregate impact value. Sieve the entire dried test portion on the 14 mm and …
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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. IS 2386(Part 4):1963 Methods of Test for Aggregates for Concrete- Mechanical Properties. Reaffirmed-Dec 2016.
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Determination of Aggregate Impact Value – Impact Test on …
Specified limits of percent aggregate impact value for different types of road construction by Indian Roads Congress is given below.
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(DOC) AGGREGATE IMPACT VALUE TEST | hong …
1.1 OBJECTIVE The objective of this experiment is to determine the aggregate impact value which provides the relative measure of the resistance of a simple to sudden shock or impact. 2.0 THEORY Basically the Aggregate Impact Value …
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(PDF) Prediction of Aggregate Impact Values and Aggregate …
Crushing test and Impact test are very important to estimate strength and toughness characteristics of the road aggregate. Extensive experimental procedures and different sets of equipment are...
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Aggregate impact value test- step by Step Procedure with …
Recommended aggregate impact value Precaution for aggregate impact value test. The sample of aggregate should be sieved in circular motion or movement. The sample aggregate should not be overheated on the oven. The weight of samples and dust should be tamped with the help of a standard size tamping rod.
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DETERMINATION OF AGGREGATE IMPACT VALUE …
DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812-112) Scope: This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance …
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PREDICTION OF AGGREGATE IMPACT VALUES AND …
In the Aggregate impact value test, a small portion of coarse aggregates having a size range between 10 to 12.5 mm, is confined in a 75 mm diameter cylindrical metal measure and subjected to 15 ...
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UNIT 2 HARDNESS AND IMPACT TESTS
The method of test covers the procedure for determining the aggregate impact value for coarse aggregates. Objective To determine the impact value of aggregates. 2.2.1 Applications of Aggregate Impact Value The aggregate impact value is considered to be an important test to assess the suitability or otherwise of aggregates as regards the ...
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Determination of the Impact Value (IV) of a Soil1
Determination of the Impact Value (IV) of a Soil1 This standard is issued under the fixed designation D5874; the number immediately following the designation indicates the year of …
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7.6 Aggregate Impact Value 7.6.1 Scope.
Guide to minimum mass of test portions required to obtain a suitable mass of material to determine the aggregate impact value. Sieve the entire dried test portion on the 14 mm and the 10 mm test sieve to remove the oversize and undersize fraction.
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(PDF) Method for determination of Aggregate Impact Value …
Method for determination of Aggregate Impact Value (AIV) under dry conditions. Code: (BS-812) 4.1 Purpose The aim of this method is to determine the 1) Impact Value of road aggregates. 2) To assess the suitability of aggregates for use in different types of road pavements.
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Aggregate impact value lab report
Apparatus for the Aggregate Impact Value Test (Millard, 1993) 4 PROCEDURE 1. The aggregate is sieved and the part that passes 12 mm is obtained and retained on a 10 mm sieves. 2. This aggregate is washed and dried at a constant temperature of 1050 C to 1100 C and then the sample is cooled. 3.
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DETERMINATION OF AGGREGATE CRUSHING VALUE
Due to movement of vehicles on the road the aggregates are subjected to impact resulting in their breaking down into smaller pieces. The aggregates should therefore have sufficient toughness …
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(PDF) Assessment of Rock Aggregate for Construction Using …
The results of the specific gravity, moisture content and water absorption vary from 2.61 to 2.86, 0.69 to 1.22%, 0.16 to 2.13% respectively. While the aggregate impact value and aggregate crushing value vary from 18.30 to 28.12% and 6.21 to 9.45% respectively.
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Determination of Aggregate Impact Value – Impact Test on …
Theory of Aggregate Impact Test. Toughness is the property of a material that enables it to resist impact. In the case of aggregates used for road construction, they are constantly subjected to impact due to the movement of vehicles. ... The percent aggregate impact value refers to the percentage of aggregate material that breaks down under ...
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DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) …
DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812-112) Scope: This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.
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(PDF) Method for determination of Aggregate …
Method for determination of Aggregate Impact Value (AIV) under dry conditions. Code: (BS-812) 4.1 Purpose The aim of this method is to determine the 1) Impact Value of road aggregates. 2) To assess the suitability of aggregates for use in …
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Lab 2 Aggregate Impact Value
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.
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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 …
WhatsApp: +86 18221755073
IMPACT STRENGTH OF BRITTLE MATERIALS (ROCKS)
the AIVtest (Aggregate Impact Value) used for the determination of the strength of brittle materials (rocks) in impact and compression stresses. The materials, whose impact strength is tested, …
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Aggregate Impact Value Test as per IS 2386 (Part-IV) 1993
Theory and Scope. The property of a material to resist impact is known as toughness. ... The aggregate impact value is the measure of resistance to sudden impact of shock, which may differ from its resistance to gradually applied compressive load. Equipments. The apparatus as per IS 2386 (Part-IV) 1993 consist of, ... PDF Download Today;
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DETERMINATION OF AGGREGATE CRUSHING VALUE
impact value of the tested material. Aggregate impact value is used to classify the stones in respect of their toughness property as indicated below in Table 1. Table 1: Classification of aggregate based on aggregate impact value Aggregate impact value (%) Quality of aggregate < 10 Exceptionally strong 10 – 20 Strong 20 – 30 Satisfactory ...
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Determination of Aggregate Impact Value (Aiv) (BS 812-112) PDF …
This document describes a test method for determining the aggregate impact value (AIV) of aggregates, which provides a measure of their resistance to sudden shock or impact. The test involves compacting aggregate samples in a steel cup and subjecting them to 15 blows from a hammer. The crushed material is then sieved and the percentage passing a 2.36mm sieve is …
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