AGGREGATE CRUSHING VALUE 1.Objective 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 instead.
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Aggregate crushing value test bs part iii scienceray aggregate crushing value test as per code for aggregate crushing ate crushing value this test helps to determine the aggregate crushing value of coarse aggregates as per is 2386 part iv per is code it should not be than 25 for wearing surfaces 45 for non wearing chat bs aggregate.Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load. Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions.
Jan 25, 2021 (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 instead IS Code).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.
Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions. . Aggregate Impact value Test Apparatus, Procedure and uses Aggregate Impact Value Test as per IS Code 2386 YouTube.Jan 04, 2014 Test Name Methods for determination ofAggregate Crushing Value (ACV) Code BS 812 Part 110, IS 2386.Definitionof ACV Aggregate Crushing Value (ACV) gives an relative measure how theaggregateact under an gradually acting compressive load. Sieve Size ACV is applicable for aggregates passing 14.0 mm sieve and retained on 10.00 mm sieve.
Mar 29, 2021 Higher crushing strength means lower crushing value and vice versa. If the aggregate crushing value is less than 10, means an exceptionally strong aggregate, Whereas crushing value of 35 and above means a weak aggregate. Relevant codes for aggregate crushing test. IS 2386(Part 4) 1963 BS 812–110 1990 Apparatus required. Compressive Testing.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 Aggregate properties, quality, highway maintenance, road.
The aggregate crushing value is defin ed as a ratio of the weight of fines passing the specified sieve (236 mm) to the total weight of the sample expressed as a percentage Aggregate crushing value 35 weak for pavement Aggregate crushing value . 10 exceptionally strong Rock group Crushing value.The aggregates crushing value test should be performed as per IS code 2386 Part IV. First, fill the sample aggregate with one third of the cylindrical measure in.
Aggregate mixed lot 40 mm475 mm average test value Requirements as per IS 3831970 1 Aggregate crushing Value ( ) — 235 Shall not exceed 45 for aggregate used for concrete other than for wearing surfaces and 30 for concrete for wearing surfaces, such as runways, roads and pavement 2 Aggregate Impact Test ( ) — 204.100 W2 ggregate crushing value = WIResults .The mean of the crushing value obtained in the two te tsis reported as the aggregate crushing value.Determination of Ten Percent Fines Value The ten percent fines value is a measure of resistance of tbe aggregates to the crushing.
Limits The aggregate crushing value for cement concrete pavement shall not exceed 30 . The aggregate crushing value for wearing surfaces shall not exceed 45 . impact value as per is code of coarse aggregate limits. Aggregate Impact Value.The average crushing value in the different tests is the actual crushing value of aggregate. Important points to remember. It is recommended that the crushing value of aggregate should be less than 30 . If it is than 30 then 10 finer aggregate is suggested to use. The aggregate whose crushing value is less than 30 can be used for.
Calculation of aggregate crushing value. The aggregate crushing value is defined as the ratio of the weight of fines passing through specified IS (here 2.36mm sieve) to the total weight of sample expressed in percentage. W1= Weigh of the total aggregates (Wa We) W2= Weigh of aggregates passing through 2.36mm IS sieve.Jul 14, 2018 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 compression load. The Indian Standard CODE IS 2386 (Part IV) – 1963 is used for procedure and classification of aggregate by result.
The crushing value test of aggregate provides the resistance of an aggregate sample to crushing under gradually applied compressive load.Generally, the test is conducted on aggregate passing 12.5 mm and retained on a 10 mm sieve.The aggregate sample is filled in a cylindrical mold and a load of 40 tons is applied through a plunger in a compression testing machine.Astm code for aggregate crushering value in india. This test helps in determining the value which indicates the ability of an aggregate to resist crushing. The lower the figure the stronger the aggregate, i.e. the greater its ability to resist crushing. Test Method IS 2386 (P 4) 1963, ASTMC 131 2006.
This percentage is known as a crushing value of aggregate. This percentage should not exceed 30 of the total weight of aggregate taken for the test. The aggregate crushing value test result should not be than 30 for the concrete used for roads and pavements and, in case of other structures it may be permitted up to 45.The Specific gravity of coarse aggregate was determined as 2.309. It was 13 reduce from standard value 2.67 which is in the range from 2.5 to 3.0. The Specific gravity of fine aggregate was also accurate. Aggregate Crushing value test This test was performed as per IS 2386 (Part IV) 1963. The crushing value of RCA was 20 .
Oct 04, 2020 The aggregate impact values are higher (on the average, by about 5) than the aggregate crushing values. Various agencies have specified the maximum permissible aggregate impact values for the different types of pavements, those recommended by the.Aggregate crushing value apparatus AS per IS 2386 partIV used for measuring resistant of an aggregate and determine 10 percent value consists of a open cylinder 150 mm diam base plate plunger and tamping rod Rs. 3800.
• The aggregate impact value and aggregate crushing value of was much higher compared to the theoretical bond strength as per BS 8110 and IS 456. by ACI and British Code for structural.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.
Aggregate crushing value as per bs812 part 3. Aggregate Impact Value BS 812 Part 3 1 Objective To determine the aggregate impact value in the laboratory 2 Introduction Impact value of an aggregate is the percentage loss of weight particles passing 236mm sieve by the appliion of load by means of 15 blows of standard hammer and drop under specified test condition 2514.3 Aggregate crushing value Ten Percent Fines Value (Clause 5.4.1) Steel cylinder [As per clause 2.2.(a) and Fig 1 of IS 2386(Part 1) 1963] Metal tamping rod Weighing balance IS sieves 12.5 mm, 10 mm 2.36 mm Compression testing machine Cylindrical metal measures of.
May 07, 2013 Objective For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. Reference Standards IS 2386(Part IV) 1963 Methods of test for aggregate for concrete Part IV Mechanical Properties. Equipment Apparatus Aggregate Impact Test Machine Sieves (12.5mm,10mm) Cylindrical metal measure Tamping Rod.The crushing strength or aggregate crushing value of a given road aggregate (stone) is obtained as per IS 2386 Part 4. AGGREGATE CRUSHING VALUE TEST , CRUSHING VALUE TEST OF AGGREGATE , IS 2386 (PART 4) 1963.