Interview Questions on Aggregates - Page 2 of 2 - Civil Bull
To construct a high-quality pavement, aggregate should possess low aggregate crushing value. Q. Is code for crushing the value of aggregate? Ans. The crushing value of the aggregate test is conducted as per IS IS:2386-Part 4-1963. Q. What is the Specific Gravity of coarse aggregates? The specific gravity of coarse aggregate as per is code is 2 ...
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The aggregate crushing value test result should not be more than 30 % for the concrete used for roads and pavements and, in case of other structures; it may be permitted up to 45%. (c) Standard Guidelines for Crushing Test: Followings are the standard guidelines for the crushing test on aggregates:
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Aggregate Crushing Value Cylinder. Ø 150 mm for UTA-630. UTA-0632. Aggregate Crushing Value Base Plate. for UTA-630. UTA-0633. Aggregate Crushing Value Plunger. for UTA-630. UTA-0634. Aggregate Crushing Value Cylindrical Measure. for UTA-630. UTC-0408. Tamping Rod Ø 16x600 mm. UTA-0640. Aggregate Crushing Value (ACV) Set Ø 75 mm BS. UTA …
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aggregate and crushed stone coarse and fine aggregate are produced by crushing natural stone. Crushing, screening, and washing may be used to process aggregates from either sand and gravel deposits or stone quarries. Aggregates may be produced from igneous, sedimentary, or metamorphic rocks, but geological type does not by itself make an aggregate
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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 aggregate used in road construction is expressed by numerical index.
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Aggregate crushing value gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. The aggregate crushing value should not exceed 45% for aggregate used for concrete other than for wearing surfaces, and 30 % for concrete for wearing surfaces, such as runways, roads ...
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Aggregate Crushing Value Test Significance & Test. 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 three layers.
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Results 1 - 1 of 1 for: bs codes. Aggregate Crushing Value. Aggregate crushing value is determined according to BS 812-110. The value gives a relative aggregate properties that measures resistance to crushing under a gradually applied compressive load. 09-03-2011 by ccurtis.
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(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)
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The percentage of wear loss of aggregate specimens rubbed by the abrasive steel balls is known as abrasion value. The Los Angeles abrasion test method and apparatus specification have been mentioned in IS code 2386 Part 4 .
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Calculate Aggregate Crushing Value. 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 = W B W …
Read MoreCrushing Value Apparatus (ACV) | Controls Group
The aggregate crushing value (ACV) provides relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Two versions available: 150 (standard) and 75 mm dia. The apparatus comprehend cylinder, plunger, base plate, tamping rod and measure. Cylinder, plunger and base plate are made from special alloy ...
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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 (Figure 1). Dry aggregates passing through 12.5 mm sieves and retained 10 mm sieves are filled ...
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Aggregate Impact Value Test : This test gives the Aggregate Impact Value (AIV), which is an index of the resistance of. aggregate to sudden shock or impact. The apparatus used for this test is called Impact Testing Machine. A sample of aggregates in surface dry condition, which pass through 12.5 mm sieve and are retained on 10 mm sieve are ...
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04/10/2020 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.
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The strength of coarse aggregates is assessed by aggregates crushing test. The aggregate crushing value provides a relative measure of resistance to crushing...
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Specification for apparatus for measuring aggregate crushing value and ten percent fines: 87: IS 9377:1979: Specification for apparatus for the aggregate impact: 88: IS 9399:1979 : Specification for apparatus for flexural testing of concrete: 89: IS 9459:1980
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IS Code For Aggregate Crushing Value Test:- IS: 2386 (Part 4) -1963, Methods of test for aggregate for concrete IS: 383: 1970, Specification of coarse aggregate and fine aggregate from natural source for concrete IS: 9376: 1979, Specification of apparatus for measuring crushing value of aggregate Procedure of Aggregate Crushing Value Test:-
Read MoreAggregate Crushing Value – Significance & Test Procedure
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 three layers. Each layer should be tamped 25times freely. After filling the …
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Aggregate crushing value = (W2 x 100) / (W1-W) W2 =Weight of fraction passing through the appropriate sieve W1-W =Weight of surface dry sample. The mean of two result to nearest whole number is the aggregate crushing value. Result The aggregate crushing value of the given sample= Aggregate Crushing Values for Roads and Pavement Construction
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The Aggregate Crushing Value offers a related measure of the resistance of an average to crushing under a compressive load that is gradually applied. Test Method: IS: 9376-1979, IS: 2386 (P-4)1963. Drying Shrinkage: Drying shrinkage is defined as the contracting of a hardened concrete mixture due to the loss of capillary water. This shrinkage ...
Read MoreIS 2386-4 (1963): Methods of test for aggregates for ...
$S : 2386 (Part IV) - 1963 70 the nearest whole number as the 'aggregate crushing value' of the size ob material tested, which shall be stated.
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2.4 Balances - For weighing fine aggregate, a balance having a capacity of not less than 500 g, sensitive to at least 0.1 g, shall be used; for weighing coarse aggregate, a balance having a capacity of not less than 5 000 g, sensitive to at least one gram, shall be used.
Read MorePRODUCT MANUAL FOR COARSE AND FINE AGGREGATE …
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 15.0 cm and 7.5 cm dia. - Oven
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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. When the aggregates crushing value become 30% or higher, the results are likely to be inaccurate. Aggregate Crushing Load (Source: IS 2386 (Part 4):1963)
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The aggregate crushing value is defined, as a ratio of the weight of fines passing the specified IS sieve to the total weight of the sample expressed as a percentage. 100 W2 Where, W1 = Total weight of dry sample. Aggregate crushing value = W1 W2 ...
Read MoreDETERMINATION OF AGGREGATE CRUSHING VALUE
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 of circular cross-section 16mm diameter and 45 to 60
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Compared with natural coarse aggregate (NCA), RCA exhibits higher porosity, water absorption and mud content, along with lower apparent density, crushing strength and …
Read MoreAggregate crushing test to find Strength of aggregate ...
Aggregate Crushing test (IS 2386(Part 4):1963 & BS 812–110:1990) Aggregate crushing test values indicates the strength of aggregate and hence it is very significant. Similarly we can say crushing value is the relative measure of resistance of an aggregate under gradually applied compressive loads.
Read Moreagregate crush value 150mm diameter - Limestone ...
Dia.150mm Acv Aggregate Rock Crushing Value Test Gerät ... 21.07.2020· Aggregate crushing value apparatus 150 mm dia is 383. Aggregate crushing value apparatus. aggregate crushing value apparatus 150 mm dia order code aicacv150 add to enquiry box it is useful for 38 to 34 aggregate consist of a 150mm 05mm diameter x 130mm …
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Aggregate crushing value gives a relative measure of the resistance of an aggregate sample to crushing under gradually applied compressive load Generally, this test is made on single sized aggregate passing 12.5 mm and retained on 10 mm sieve. The aggregate is placed in a cylindrical mould and a load of 40 ton is applied through a plunger.
Read MoreAggregate Crushing Value – Significance & Test Procedure
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 …
Read MoreAggregate Crushing Value Test – Determine Aggregate ...
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. …
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