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DCC3113 DETERMINATION OF AGGREGATE IMPACT VALUE.

The percentage of fines passing through a 2.36mm sieve was calculated to determine the aggregate impact value. Sample 1 had a 17% impact value and Sample 2 was 15%, both below the JKR requirement of 20%, indicating the aggregates have medium toughness and resistance to crushing. ... Due to movement of vehicles on the road the aggregates are ...

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Lab Tests on Aggregate to Determine Quality for Use in Road Work

Aggregate Crushing Test – The aggregate crushing value gives the relative measure of resistance against crushing under crushing load applied gradually.The aggregate test is standardized by IS: 2386 part-IV and used to determine the crushing strength of aggregates. Se-Test India aggregate crushing value provides a relative measure of ...

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Crushing Value of Aggregate

The test conducted to know the compressive strength of aggregate is known as aggregates crushing value test. The crushing value of aggregates is rather insensitive to variation in strength of weaker aggregates. For this reason, a simple test known as 10 percent fine value is introduced. ... Aggregates used in road construction should be strong ...

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Tests of aggregates | PPT

When traffic moves on the road the soil particle (sand) which comes between the wheel and road stone. ... - To determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) - 1963. APPARATUS :- 1) Cylindrical measure and plunger 2) Compression testing machine 3) IS Sieves of sizes - 12.5mm, 10mm and 2.36mm

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PROPERTIES AND TESTING OF AGGREGATES FOR PAVEMENT WORKS …

Aggregate crushing value = (W2/W1) *100 %. Abrasion Test on Aggregates ... To determine the stripping value of bitumen static immersion test is conducted on aggregates. In this test the aggregates are coated with bitumen and dried. After drying they are immersed in water at 40 o c for about 24 hours. Stripping value of aggregate should not ...

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Aggregate Crushing Value Test

Determine the aggregate crushing value of coarse aggregate; Assess suitability of coarse aggregates for use in different types of road; Apparatus. A steel cylinder 15 cm diameter with plunger and base plate. A straight metal tamping rod 16mm diameter and 45 to 60cm long rounded at one end.

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Aggregate Crushing Value Test – Procedure, Result

The aggregate crushing value test provides resistance of an aggregate to crushing under a gradually applied compressive load. To construct a high-quality pavement, aggregate possessing low aggregate crushing value should be …

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(PDF) RELATIONSHIP BETWEEN AGGREGATE CRUSHING VALUE …

In addition to material strength (Xuan et al., 2015;Li et al., 2017), the crushing characteristics of the aggregates are essential to ensure road stability.

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7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR USE IN ROAD …

Then crushed aggregates are then sieved through 2.36 mm sieve and weight of passing material (W2) is expressed as percentage of the weight of the total sample (W1) which is the aggregate crushing value. Aggregate crushing value = (W1/W2)*100. A value less than 10 signifies an exceptionally strong aggregate while above 35 would normally be ...

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Determination the Crushing Value of Aggregate test

The crushing value is an important parameter that reflects the ability of aggregates to resist crushing under a compressive load. A lower crushing value indicates a stronger aggregate, …

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Aggregate crushing value Test and Procedure

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 instead. Crushing value is strength of the aggregates against crushing load. Aggregates undergo crushing in road construction and road operation work. If it gets crushed easily then road ...

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7.7 Aggregate Crushing Value and 10% Fines Value 7.7.1 …

Calculate the Aggregate Crushing Value (ACV) expressed as a percentage to the first decimal place, of the mass of fines formed to the total mass of the test specimen from the following expression. (ACV) = 100 x M 2 / M 1 Where, M 1 is the mass of the test specimen in grammes. M

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PREDICTION OF AGGREGATE IMPACT VALUES AND …

The aggregate crushing value, which is an inverse measure of mechanical strength of aggregate, is determined by the percentage of fines passing through 2.36 mm IS sieve after test

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Aggregate impact value test experiment | PDF

The percentage of material passing a 2.36mm sieve was calculated to determine the aggregate impact value, with average values below 10 considered strong and above 35 too weak for construction. ... where as those having value more than 50% are bad for construction. It is reliable to calculate the AIV % of the aggregate use as road construction ...

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SANS5841

This standard specifies a method to determine the aggregate crushing value (ACV) of coarse aggregates. The ACV test involves crushing a confined sample under gradually applied force and determining the percentage crushed finer than a specified size. The standard provides details on the apparatus, sample preparation, test procedure, and expression of results for both dry and …

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IS 2386-4 (1963): Methods of test for aggregates for …

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7 LAB TESTS ON AGGREGATE TO CHECK QUALITY FOR …

In construction, ensuring the quality and durability of materials is critical to the longevity and performance of infrastructure. One key method for assessing the strength of …

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Some useful tips to find out the crushing value of an aggregate

A test is recognized with IS:2386 part-IV and conducted to find out the crushing strength of aggregates. The crushing value of aggregate offers a relative measure of resistance against crushing under progressively employed crushing load. ... To examine the relevance of aggregates to be applied in various types of road pavement. Method: The test ...

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Aggregate Crushing Value Test

The actual crushing value of an aggregate is a relative measure that shows the resistance to crushing under a slowly applied compressive load. ... To determine the strength of coarse aggregate and suitability of the aggregate for construction. ... The aggregate whose crushing value is less than 30% can be used for cement concrete road. The ...

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RELATIONSHIP BETWEEN AGGREGATE CRUSHING …

It is used to determine the crushing value of a given road aggregate also it is used to assess ... a diagram was produced to determine the ACV of aggregates from the ten per cent fines load, or ...

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Aggregate Crushing Value Test, Crushing Value Test …

The aggregate crushing value test evaluates the ability of the aggregates used in road or pavement construction to withstand the stresses induced by moving vehicles in the form of crushing. With this, the aggregates …

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Chapter 8 Pavement materials: Aggregates

A test is standardized by IS:2386 part-IV and used to determine the crushing strength of aggregates. The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load. The test consists of subjecting the specimen of aggregate

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Assessing particle crushing mechanism and optimizing design for

The aggregate crushing value contours are plotted on the crushing value surfaces to satisfy the requirements of different highway classes and base types as listed in Table 3. The intersection lines between the contour surfaces and the crushing value surfaces represent the maximum mixing amounts of recycled aggregates that are suitable for the ...

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Pavement materials: Aggregates

One of the model in which pavement material can fail is by crushing under compressive stress. A test is standardized by IS:2386 part-IV and used to determine the crushing strength of aggregates. The aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load.

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Department of Civil Engineering

2. To determine the toughness (i mpact value) of aggregates. 3. To determine the crushing value of road aggregates. 4. To determine the Specific Gravity and water absorption of aggregate. 5. To determine the flakiness and elongation indices of the given aggregate sample. (B ) Tests on bitumen 6. To determine the softening point of bitumen. 7.

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Determine Aggregate Crushing Strength

Aggregate crushing value is defined as the percentage by weight of the crushed (or finer) material obtained when the test aggregates are subjected to a specified load under standardized conditions, and the strength of the …

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Standard of Crushing Value of Coarse Aggregates for Permeable …

It was proposed that the crushing value of the coarse aggregate used in PA mixture should be no more than 20% . Liu et al. suggested that the crushing value of coarse aggregate for the OGFC-13 mixture should not exceed 15% . Dang et al. proposed that the crushing value of coarse aggregate was not more than 15% .

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Experiment No 6

The aggregate crushing value gives a relative measure of the resistance of aggregate to crushing under a gradually applied compressive load. It is the percentage by weight of the crushed material obtained when test aggregate are subjected to specific load under standard condition and is numerical index of the strength of aggregates used in road ...

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Aggregate Crushing Value Test – Determine Aggregate Crushing …

Specifically, the test aims to determine the aggregate crushing value of the coarse aggregate. This value is an indicator of the strength and durability of the aggregate, which is …

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Method of Testing Determination of Aggregates Crushing Value …

This document outlines a procedure for determining the aggregate crushing value (ACV) of road construction aggregates. The ACV test applies to aggregates between 10mm and 14mm in size. The procedure involves compacting aggregate samples into a cylinder, applying a load of 400kN over 10 minutes, then sieving the crushed material to determine the percentage passing a …

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