their disintegration due to impact. This characteristic is measured by impact value test. 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. 3. APPARATUS The apparatus of the aggregate impact value test as per IS: 2386 (Part IV) – 1963
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Aggregate Impact Value (AIV) for the two samples which are 17% and 15% which is less than the requirement of JKR; 20%. The aggregate impact value is affected by the aggregate physical property. Lower value of AIV shows that the aggregate is tougher and have more resistance to sudden shock.
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Calculate the mean of the two values determined in (a) or (b) of 7.6.6.2 to the nearest whole number. Report the mean as the aggregate impact value, unless the individual results differ by more than 0.15 times the mean value. In this case repeat the test on two further specimens, calculate the median of the four results to the nearest
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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. …
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The apparatus used for determining aggregate impact value of coarse aggregates is. Impact testing machine conforming to IS: 2386 (Part IV)- 1963,IS Sieves of sizes – 12.5mm, 10mm and 2.36mm, A cylindrical metal measure of 75mm dia. and 50mm depth, A tamping rod of 10mm circular cross section and 230mm length, rounded at one …
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The observations in the Impact Test are recorded, including the total weight of the dry sample (W1 gm), weight of portion passing the 2.36 mm sieve (W2 gm), and the calculated Aggregate Impact Value in percent. Significance of Aggregate Impact Value. The Aggregate Impact Value is used to classify aggregates based on their suitability for ...
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Calculate the Aggregate Impact Value by dividing the weight of the fraction passing through the sieve by the total weight of the sample, and multiplying by 100. …
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The aggregate impact value is expressed as the percentage of the fines formed w.r.t the total weight of the sample. Aggregate Impact Value (AIV) = …
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The aggregate impact values are strong (on the average, by about 10% to 30%) 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 roads for deciding the suitability of soft aggregates in base course construction, this ...
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In conclusion, our group now can determine the aggregate impact value (AIV) of aggregate. Our test gives the average impact value of 37% and it is exceeding the maximum permissible aggragate impact value according to the JKR Specifications 2005, 30%. It cannot be used in highway construction due to weak in characteristic for road …
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The method of aggregate test specifies the procedure for determining the aggregate impact value of coarse aggregate. Aggregate impact value is used to classify the stones in respect of their toughness property as indicated below: <10% Exceptionally strong. 10-20% Strong. 20-30% Satisfactory for road surfacing. 35% Weak for road surfacing
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Observations and Calculations Calculate the aggregate impact value (AIV) expressed as a percentage to the first decimal place for each test specimen from the following equation: Where (𝐴𝐼𝑉) = 𝑀2 × 100 𝑀1 M 1 is the mass of the …
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Aggregate Impact Value - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. aggregate impact value
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lab report 1 DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812-112) - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. DETERMINATION OF AGGREGATE IMPACT VALUE (AIV) (BS 812-112)
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5.1 Impact Value, as determined using the standard 4.5 kg (10 lbm) hammer, has direct application to design and construction of pavements and a general application to earthworks compaction control and evaluation of strength characteristics of a wide range of materials, such as soils, soil aggregates, stabilized soil and recreational …
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The limits for impact value vary depending on the type of aggregate and its intended use. Here are some commonly used limits as per ASTM C131 and BS 812: Part 112: For base course and wearing course aggregates. Maximum impact value: 30%. Minimum impact value for heavy-duty concrete pavements: 20%.
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The Aggregate Impact Value (AIV) test, outlined in IS 2386 Part IV, evaluates the impact resistance of aggregates. This is performed with an impact testing apparatus, using a specific procedure and sample preparation method. Aggregates acceptable for wearing surfaces in concrete should not exceed a 45% impact value and …
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The aggregate impact value is the ratio of the weight of the fraction passing through 2.36 mm (weight W2) by the total weight of the sample (weight W1 + W2). Aggregate Impact Value = (W2/ (W1+W2)) * …
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In the Aggregate impact value test, a small portion of coarse aggregates having a size range between 10 to 12.5 mm, is confined in a 75 mm diameter cylindrical metal measure and subjected to 15 ...
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TILTLE OF REPORT AGGREGATE IMPACT VALUE LECTURER NAME PUAN ROZINA BINTI MUHAMMAD CONTENT CONTENT PAGE INTRODUCTION 1 OBJECTIVE 1 APPARATUS 2-PROCEDURE 4 ... the aggregates impact value is 19% from Sample 1 meanwhile from Sample 2 we get 21%. In meaning of that, these experiments is …
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(B) The report provides Aggregate Impact Value Test Apparatus market revenues at the worldwide, regional, and country levels with a complete analysis to 2028 permitting companies to analyze their ...
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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 …
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The observations in the Impact Test are recorded, including the total weight of the dry sample (W1 gm), weight of portion passing the 2.36 mm sieve (W2 gm), and …
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Impact Value = 45/289 × 100 = 15 %. Calculation for sample 3. W1 = 1074 – 774 = 300g. Impact Value = 47/300 × 100 = 15 %. DISCUSSION. In this laboratory, aggregate impact values test is conducted to measure the impact value of. aggregate that need for the construction of highway pavement and concrete structure. Other
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The aggregate impact value is expressed as the percentage of the fines formed w.r.t the total weight of the sample. Aggregate Impact Value (AIV) = (100*M2)/M1. Where: M1 =Mass of the test specimen. M2 = Mass of …
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Aiv Test Report - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. fj
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In each test, the total weight of the sample (weight A) divided by the weight of the fraction passing through 2.36 mm (weight B) gives the aggregate impact value. The weight of fines generated to total sample weight must be expressed as a percentage. The mean of the two test results is reported as the specimen's Aggregate Impact Value (AIV ...
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Procedure of Aggregate Impact value test. The test sample: normally aggregates sized 10.0 mm to 12.5 mm. the aggregates should …
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Aggregate Impact Value = W B W A × 100. Where, W A is Weight of oven-dried sample; W B is Weight of fraction passing through 2.36-mm IS Sieve; Reporting of Results. The mean of the two results shall be reported to the nearest whole number as the aggregate impact value of the tested material.
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UTA-0650. The Aggregate Impact Value Testing Apparatus is robustly designed to determine the Aggregate Impact Value (AIV) of aggregates which provides a relative measure of the resistance of an aggregate to sudden shock or impact. The number of blows delivered to the sample is automatically documented by the counter that is fitted to …
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Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. Aggregate impact value (%) Toughness Properties. <10. Exceptionally tough / Strong. 10 – 20. Very tough / Strong. 20 – 30. Good for pavement surface course.
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AGGREGATE IMPACT VALUE (AIV) 1. OBJECTIVES. To assess the resistance of an aggregate to mechanical degradation by the Aggregate Impact Value. 2. BACKGROUND. When a road aggregate has been manufactured to a specified grading it is stockpiled, loaded into. trucks, transported, tipped, spread and compacted.
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Aggregate Impact Value AIV (%) = = X 100 31 673 3 X 100 = 4,60% Rata-rata Aggregate Impact Value = = 4,65% KELOMPOK 18 79 Tabel 7.4 Data Hasil Perhitungan Item Pengujian Indeks Berat wadah / cup W1 …
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Apparatus for the Aggregate Impact Value Test (Millard, 1993) 4 PROCEDURE 1. The aggregate is sieved and the part that passes 12 mm is obtained and retained on a 10 mm sieves. 2. This aggregate is washed and dried at a constant temperature of 1050 C to 1100 C and then the sample is cooled. 3.
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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 compressive load. 2.Apparatus Required Fig. 1: Balance Balance should be accurate upto 1 g Fig. 2: Sieves Seives required are 12.5, 10.0 and 2.36 mm Fig. 3: Impact ...
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The aggregate impact value gives a relation measure of the resistance of an aggregate to sudden shock or impact, which in some aggregates differs from their resistance to a slowly applied compressive load. General: …
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Aggregate Impact Value report.docx - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. Scribd is the world's largest social reading and publishing site.
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The aggregate impact value is the proportion of the sample that passes a 2.36 mm sieve after the hammer impacts. European Standards will not contain the 10 per cent fines test or the aggregate impact value test (although a different impact test, the German Schlagversuch test, has been included).
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