significance of aggregate impact value ppt

DEPARTMENT OF CIVIL ENGINEERING

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 property of a material to resist impact is known as toughness. Due to movement of vehicles on the road the aggregates are subjected to impact ...

Properties of aggregates- Physical properties, Chemical …

It is indicated by aggregate impact value which is a measure of the resistance of an aggregate to impact load. Aggregate impact value test can be conducted accordingly to IS:2386 (part IV). According to IS codes, the testing mechanism is similar to that of the aggregate crushing value test except for the load which is applied suddenly using the ...

Prediction of Aggregate Impact Values and Aggregate Crushing Values

of Light compaction values (LCV) with Aggregate crushing values (ACV) and Aggregate Impact Values (AIV). The R 2 values for the relationship was found to be more than 0.9 for both these relationships.

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. …

LOS ANGELES ABRASION VALUE OF AGGREGATE

LOS ANGELES ABRASION VALUE OF AGGREGATE 1.Objective Abrasion test is carried out to test the hardness property of aggregates. The principle of Los Angeles abrasion test is to find the percentage wear due to relative rubbing action between the aggregate and steel balls used as abrasive charge. 2.Apparatus Required Fig. 1: Balance

Comparing Crushed Brick as Coarse Aggregate Substitute in …

3.5 Impact Test of Aggregate. The aggregate impact test was done as per the IS: 2386 (Part IV)-1963 standard. For aggregate impact value, the aggregates need to pass through a 12.5 mm sieve and be retained on a 10 mm IS sieve. There are notable differences in the results between natural coarse aggregate (NCA) and crushed brick …

Aggregate impact and crushing test | PDF

Introduction on aggregate impact testing machine ppt. ... The aggregate impact value and Los Angeles abrasion value tests assessed aggregate suitability for road construction based on resistance to impact and abrasion. ... observations, calculations, and significance of the CBR test. It also summarizes the purpose, …

Aggregate Crushing Value Test – Procedure, Result

Aggregate Crushing Value Apparatus. A 15 cm dia. Steel ; cylinder with the plunger and base plate. A straight metal tamping rod 16mm in diameter and 45 to 60cm long rounded at one end.

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 …

Aggregate Impact Value (AIV)

The AIV apparatus is designed to determine the Aggregate Impact Value of aggregates, which provides a relative measure of the resistance of an aggregate to sudden shock or impact. Request Call Back. Buy now. Request Quote. Name Company. Email Address Position. Phone NUmber State. Thank you! Your submission has been received! ...

A Review of Aggregate and Asphalt Mixture Specific …

The AggPlus system tended to produce higher Gsb values for coarse aggregate with absorptions of more than one percent regardless of mineralogy. More effort was recommended to improve the test consistency and produce test results comparable to those resulting from the standard test methods if the results are to be used for specification …

Everything you should know about the Aggregate Impact …

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 the test specimen passing 2.36 …

Specific Gravity and Water Absorption Test of Coarse Aggregate

IS Reccomanded Values. The specific gravity of coarse aggregate as per its code is 2.5 to 3. The water absorption of aggregate ranges from 0.1 to 2%. Conclusion. In conclusion the specific gravity of coarse aggregate and water absorption tests are crucial in assessing the quality and suitability of aggregate for use in construction projects.

Aggregate Impact Value and Its Significance in Construction

Significance of Aggregate Impact Value. The Aggregate Impact Value is used to classify aggregates based on their suitability for different types of road …

Aggregate crushing strength test | PPT

After Sieving dry the test specimens by heating at a temperature of 105±5oC. 9 (Table:03) Guide to minimum mass of test portions required to obtain a suitable mass of material to determine the aggregate crushing value Grading of the aggregate Minimum Mass of the test portion1) mm All-in aggregate 40 max. size All-in aggregate …

Aggregate Impact

Concrete Aggregates. Ian Sims, Bev Brown, in Lea's Chemistry of Cement and Concrete (Fourth Edition), 1998. Aggregate impact value. A small portion of 14–10 mm sized coarse aggregate particles is confined in a steel pot and subjected to 15 blows by a small hammer in a standardised test rig, after which the ' aggregate impact value' (AIV) is determined …

Sieve Analysis of Aggregates

SIEVE ANALYSIS Sieve analysis helps to determine the particle size distribution of the coarse and fine aggregates.This is done by sieving the aggregates as per IS: 2386 (Part I) – 1963. In this we use different sieves as standardized by the IS code and then pass aggregates through them and thus collect different sized particles...

Aggregate impact value test- step by Step Procedure with …

1. The procedure of determining aggregate impact value is according to IS 2386.
2. More will the impact value more will be the strength of aggregate.
3. The elongated and flaky aggregate has low strength as it has a higher surface area and gets more stress on it.
4. Different impact value of aggregate should be used for different types of pavement given bel…

1. The procedure of determining aggregate impact value is according to IS 2386.
2. More will the impact value more will be the strength of aggregate.
3. The elongated and flaky aggregate has low strength as it has a higher surface area and gets more stress on it.
4. Different impact value of aggregate should be used for different types of pavement given below.

AGGREGATE IMPACT VALUE TEST-10+ IMPORTANT NOTES TO REMEMBER

Aggregate impact value, maximum, % Sub-base course and water bound macadam (WBM) layer: 50: WBM base course with bitumen surfacing: 40: Built up-spray grout, base course: 40: Wet mix macadam (WMM) base course and WBM surface course: 30: Dense bituminous macadam binder courses: 30:

Aggregate Impact Value Test Procedure as per …

Then aggregate impact value is expressed as the percentage of fines formed in terms of the total weight of the sample. Observations:-Table: Impact value of sample aggregates. Observation. …

DEPARTMENT OF CIVIL ENGINEERING

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 …

Los Angeles Abrasion Test on Aggregates -Values for …

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 100 Results Los Angeles Abrasion Value = Recommended Los Angeles Test Values for Pavements Los Angeles test is commonly …

Lect 14-testing procedures for road aggregates | PPT

2. 8/16/2019 Aggregate Testing 2 Importance of Testing Aggregates form major part of pavement structure (88-96% by weight, 80% by volume) Load transfer by grain to grain contact Are used in construction of pavements using cement concrete, bituminous material and in WBM / WMM Have to bear load stresses and resist wear Are also subjected to …

Aggregate impact value test- step by Step Procedure with …

= 6.97%. And, hence, the finally aggregate impact value is 6.97 . Significance of impact test. The procedure of determining aggregate impact value is according to IS 2386.

Aggregate Crushing Value Test-Objective, Apparatus, and …

Sampling of Aggregates. Select coarse aggregate that passes through a 12.5mm IS sieve and is retained on a 10mm IS sieve. Heat the aggregate at 100 to 110°C for 4 hours, cool it to room temperature, and ensure that the material depth in the cylinder, after tamping as described below, is 10 cm. Determine the appropriate quantity by filling …

14 Properties of Aggregates and Its Importance!

Impact value of aggregate. The aggregate impact value test is used to find the resistance capacity of aggregate from sudden impact applied on the aggregate. 14. Thermal Expansion. The aggregates should not expand due to the change of weather conditions else it may create cracks on concrete surfaces.

Aggregate crushing value Test and Procedure

Objective and Significance: – The aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. With aggregate of aggregate crushing value 30 or higher, the result may be anomalous, and in such cases the ten percent fines value should be determined …

D5874 Standard Test Methods for Determination of the Impact Value …

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 …

Aggregate impact value test | PDF

The document describes an experiment to determine the aggregate impact value of a given specimen through a standardized test procedure. Three samples were tested by subjecting aggregates retained between 10mm and 12.5mm sieves to 15 blows from a falling hammer.

Aggregate Impact Value Test and Procedure

The aggregate impact value is a determining measure of resistance to sudden impact or shock, which may differ from its resistance to gradually applied compressive load. Aim: – To determine Aggregate Impact Value Using Impact Testing Machine. Apparatus: – Impact Testing Machine: – Weight of hammer is 13.5 to 14.0 kg …