Apr 25, 2019· 10 % Ten percent fines value of aggregate is a measure of the aggregate resistance to crushing. Why is 10 % Ten Percent Fines Value of Aggregate Test Required ? 1. 10 % Ten percent fines Value test required to know the resistance strength of coarse aggregate.
Crushing value is defined as the ratio of finess passing a standard sieve produced by crushing under standard condition to the weight of coarse aggregate expressed as a percentage. Aggregate crushing values as determined by the IS code method shall not exceed 30 for aggregate to be used for making concrete for wearing surface such as roads and runways and 45 for uses other than wearing
An aggregate specimen is compacted into a steel cylinder fitted with a no-friction plunger. The specimen is then loaded via the plunger. The load crushes the aggregate to an extent depending on the crushing resistance of the material. It is measured by a sieving test on the crushed specimen and it is a measure of the aggregate crushing value (ACV).
Aggregate Crushing Value (ACV) 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 slowly applied compressive load.
Determination of aggregate crushing value545 Кб. 3. APPARATUS The apparatus of the aggregate crushing value test as per IS: 2386 (Part IV) – 1963 consists of: 1) A 15cm diameter open ended steel cylinder with plunger and base plate, of the general form and dimensions as shown in Fig 1.
Jan 25, 2018· The aggregate crushing value is an indirect measure of crushing strength of the aggregates. Low aggregate crushing value indicates strong aggregates, as the crushed fraction is low. Thus the test can be used to assess the suitability of aggregates with reference to the crushing strength for various types of pavement components.
Aggregate Crushing Value Test – Determine Aggregate Crushing Strength 3 months ago CementConcrete Concept and significance of the Aggregate crushing value test The 'aggregate crushing value test ` gives a relative measure of
AGGREGATE CRUSHING VALUE TEST YouTubeaggregate crushing value for roads,May 03, 2018·,32;Aggregate crushing value is a numerical index of the strength of the aggregate and it is used in construction of roads and pavements Crushing value of aggregates indicates its strength-Specific Limit Of Percent Aggregate Crushing Value-aggregate
Aggregate crushing value is a numerical index of the strength of the aggregate and it is used in construction of roads and pavements. Crushing value of aggregates indicates its strength. Lower crushing value is recommended for roads and pavements as it indicates a lower crushed fraction under load and would give a longer service life and a more economical performance.
AGGREGATE CRUSHING VALUE. This test helps to determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) – 1963. The apparatus used is Cylindrical measure and plunger, Compression testing machine, IS Sieves of sizes – 12.5mm, 10mm and 2.36mm. Procedure to determine Aggregate Crushing Value.
Maximum crushing value of good quality of aggregate. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Maximum crushing value of good quality of aggregate, quarry, aggregate, and different kinds of minerals.
The Aggregate Crushing Value (ACV) Test Set provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Each set consists of steel cylinder, plunger, base plate, cylindrical measure and tamping rod.
Jan 27, 2019· The aggregate crushing value should not be more than 45% for aggregate used for concrete other then the wearing surfaces. 30% for concrete used the surfaces such as runway, roads and air field pavements.: Ravi Dhami
Apr 25, 2019· Aggregate 10 % Ten percent fines value test procedure of coarse aggregate is required to find out the resistance of coarse aggregate to crushing. We described the test procedure of 10% Ten percent fines value of coarse aggregate as per IS code with 10% Ten percent fines value …
The value is higher when more percentage of aggregates crush and break into smaller pieces which indicates the aggregates are of a lower quality. 2. Aggregate crushing value < 45% for aggregates used for concrete for non-wearing surfaces and <25% for wearing surfaces like runways and roadways.
• The crushing strength of aggregate cannot be tested with any direct test. There are some indirect tests to inform us about the crushing strength of aggregate. –Test method: Crushing value test Other Mechanical Properties of Aggregates: a) Impact value: Impact value of aggregates measures the toughness of particles by impact. Total 54 14
the rules of aggregate crushing value test pdf IS 2386-4 (1963): Methods of test for aggregates for concrete, Part 4 IS : Z-1960 Rules for Rounding Off Numerical Values (Revised).
Sep 12, 2015· 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 in standard mould to a compression test under standard load conditions (See Fig-1).
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. Procedure o f Aggregate Impact Test The test sample consists of aggregates sized 10.0 mm 12.5 mm. Aggregates may be dried by heating at 100-110° C for a period of 4 hours and cooled.
The aggregate crushing value provides a relative measure of the resistance of an aggregate to crushing under gradually applied crushing load. The aggregate crushing value test is a useful guide when dealing with aggregates of unknown performance, particularly when lower strength is suspected.
The Aggregate Crushing Value (ACV) Test Set measures how resistant an aggregate is, when being crushed under a gradually applied compressive load. Each set consists of steel cylinder, plunger, base plate, cylindrical measure and tamping rod.
What is Aggregate Crushing Value? The aggregate crushing value provides a relative measure of resistance to crushing under a gradually applied compressive load. To achieve a high quality of pavement, aggregates possessing low aggregate crushing value should be preferred.
Nov 03, 2013· Aggregates with lower crushing value indicate a lower crushed fraction under load and would give a longer service life to the load and hence a more economical performance.Weaker aggregates if used would get crushed under traffic loads, would produce smaller pieces not coated with binder and these would be easily loosend out reasulting in loss
number. Report the mean as the Aggregate Crushing Value, unless the individual results differ by more than 0.07 times the mean value. In this case repeat the test on two further specimens, calculate the median of the four results to the nearest whole number and report the median as the Aggregate Crushing Value.
Aggregate crushing value = B/A x 100%. The result should be recorded to the first decimal place and the mean of the two results reported.