1.It is recommended that the crushing value of aggregate should be less than 30. If it is more than 30 then 10 finer aggregate is suggested to use. 2.The aggregate whose crushing value is less than 30 can be used for cement concrete road. 3.The aggregate whose crushing value is less than 40 can be used for wearing surface. This test must be done before it comes to road and pavement
1.The ratio of the weight of fines formed to the total sample weight in each test shall be expressed as a percentage the result being recorded to the first decimal place Aggregate Crushing Value BA X 100 where A weight of oven-dried sample B weight in g of fraction passing through 2.36 mm IS sieve. 6.Video Aggregate Crushing Value Test
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. 2 A straight metal tamping rod
Crushing Value Of Aggregate Pdf. The rules of aggregate crushing value test pdf. IS 383 1970 Specification for Coarse and Fine Aggregates FromSep 25 1970aggregates aggregate abrasion value and soundness test for aggregatesthe test required and
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.
It is recommended that the crushing value of aggregate should be less than 30. If it is more than 30 then 10 finer aggregate is suggested to use. The aggregate whose crushing value is less than 30 can be used for cement concrete road. The aggregate whose crushing value is less than 40 can be used for wearing surface.
Jun 17 2020 the rules of aggregate crushing value test pdf. IS 383 . . application for aggregate impact value test. application for aggregate impact value test 2012 Applications of Aggregate Crushing Test It The aggregate crushing value is an indirect measure of crushing. . theory aggregate crushing value test . application of aggregate abrasion value .
Oct 04 2020 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.
Concept and significance of the Aggregate crushing value test. The aggregate crushing value test gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. 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
Feb 04 2011 The aggregate impact value is expressed as the percentage of the fines formed in terms of the total weight of the sample. 100 W2 Where W1 Original weight of the sample. Aggregate Impact Value W1 W2 Weight of fraction passing 2.36mm IS sieve.
The standard aggregate impact test shall be made on aggregate passing a 14.0 mm BS test sieve and retained on a10.0 mm BS test sieve. If required or if the standard size is not available smaller sizes may be tested but owing to the non-homogeneity of aggregates the results are not likely to be the same as those obtained from the standard size. In general the smaller sizes of aggregates will give a lower-impact value but the relationship between the values
Mar 30 2020 Procedure of Aggregate Crushing Value Test-. Sieve the test material through 12.5 mm and 10.0 mm IS sieve. Take test samples of aggregates passing through 12.5 mm IS sieve and retained on 10 mm IS sieve minimum 3 Kg. Dry theme in an oven for 4 hours at a temperature of 100 C to 110 C and then cool at room temperature.
Dec 19 2019 If the aggregate crushing value is less than 10 it signifies an exceptionally strong aggregate. Whereas if the crushing value is 35 or above it would normally be considered as weak aggregate. After performing the test the crushed material is separated and calculated in terms of percentage of the original weight taken in the mould.
Determination of Aggregate Crushing Value . Include your Laboratory Test Reference Include your Personal Reference . Was BS 812 Part 110 1990- This Standard has being partially replaced by the following British Standard . BS EN 1097-2 2010 . Tests for
coarse aggregates the variation of aggregate crushing value of different coarse aggregates strength gain of concrete with time for different coarse aggregates and to establish a relation between aggregate crushing value of coarse aggregate and compressive strength of concrete. In the study Portland Composite Cement PCC has not been used.
In crushing test the aggregate used is passing through mm sieve and retained on mm. a 20mm 16mm . Aggregate crushing value provides the relative measure of resistance to a Crushing under gradual increasing load b Crushing under sudden .
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.
Aggregate crushing value W1 W2 Weight of the portion of crushed material passing 2.36mm IS sieve. Results The mean of the crushing value obtained in the two tests is reported as the aggregate crushing value. Limits The aggregate crushing value for cement concrete pavement shall not exceed 30.
Jan 04 2014 Procedure of testing Aggregate Crushing Value ACV 1. Make a sieve analysis and get sufficient amount of aggregate by using 14.0 mm passing sieve and 10.00 mm retained sieve. 2. After sieving fill the cylinder in thre layers by the aggregate and apply 25 blows by the tamping rod with a approximate height of 50 mm. 3.
Oct 03 2019 Aggregate Crushing value is a relative resistance of aggregates to crushing under gradually applied compressive load. Aggregate Crushing Value Test is important to test to be performed on aggregate. The strength of aggregate parent rock is determined by preparing cylindrical shape specimens of size 25 mm diameter and 25 mm height.
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