Dec 15, 2017 Aggregate Impact Values, (AIV’s), below 10 are regarded as strong, and AIV’s above 35 would normally be regarded as too weak for use in road surfaces. Aggregate Impact Values and Aggregate Crushing Values are often numerically very similar, and indicate similar aggregate.Aggregate (RAP) Limiting Value Los Angeles Abrasion Value(GradeA), Percent 19 25.5 ≤ 40 Aggregate Impact Value, Percent 8 15.96 ≤ 40 Aggregate Crushing Value, Percent Table 18 21 ≤ 35 2.1 SIEVE Of Mass ANALYSIS Sieve Analysis is a method of determining the particle.
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Aggregate Crushing Value Test The objective of this test is to Determine the aggregate crushing value of coarse aggregate Assess suitability of coarse aggregates for use in different types of road Apparatus. A steel cylinder 15 cm diameter with plunger and base plate. A straight metal tamping rod 16mm diameter and 45 to 60cm long rounded at.
May 17, 2019 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 standardized conditions, and the strength of the aggregate used in road.
Feb 09, 2016 The amount of aggregates for asphalt concrete mixtures is generally 90 to 95 percent by weight and 75 to 85 percent by volume. Aggregates are primarily responsible for the load supporting capacity of a pavement. Aggregate has been defined as any inert mineral material used for mixing in graduated particles or fragments.
Apr 26, 2018 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. Aggregate crushing value= (W2 W1) 100.
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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 cement concrete road. The aggregate whose crushing value is less than 40 can be used for wearing surface.
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The average values of 18.88 and 30.69 obtained for the aggregate impact value (AIV) and aggregate crushing value (ACV) were satisfactory for road surfacing when compared with the specification. Marshall stability values of 10.84 KN, 4.27 KN, and 3.21 KN respectively were obtained with 30 , 20 , and 50 partial replacements with AS.
These tests are a measure of the crushing properties of aggregate and use the same basic equipment. The ACV test requires a standard load of 400 kN to be applied over a period of 10 minutes while the TFV test measures the force required to produce a specified depth of plunger penetration. 150mm Aggregate Crushing Value Apparatus.
The average values of 18.88 and 30.69 obtained for the aggregate impact value (AIV) and aggregate crushing value (ACV) were satisfactory for road surfacing when compared with the specification. Marshall stability values of 10.84 KN 4.27 KN and 3.21 KN respectively were obtained with 30 20 and 50 partial replacements with AS.