Impact test The aggregate impact test is carried out to evaluate the resistance to impact of aggregates. Aggregates passing 12.5 mm sieve and retained on 10 mm sieve is filled in a cylindrical steel cup of internal dia 10.2 mm and depth 5 cm which is attached to a metal base of impact testing machine.
MUHAMMAD FARIDH FIKRI BIN MOHD SAFRI11DKA19F1052DKA4B
The Los Angeles (L.A.) Abrasion Test is widely used as an indicator of the relative quality of aggregates. It measures the degradation of standard gradings of aggregates when subjected to abrasion and impact in a rotating steel drum with an abrasive charge of steel balls. The drum is fitted with an internal shelf that lifts and drops the charge ...
Aggregate impact value Calculation And uses. Aggregate impact value Calculation And uses 1. Created by Shahryar CO. 2. This test is done to determine the aggregate impact value of coarse aggregates AIV is basically a % ratio of 2.36mm sieved aggregate to 14mm aggregate sieve.
EXPERIMENTAL STUDY ON APPLICATION OF MARBLE WASTE AS CONVENTIONAL AGGREGATE FOR BASE COURSE MATERIALS ... The laboratory test results for MWA indicated SG, ACV, AIV, LAA, Flakiness Index ...
Standards. BS 812:112. General Description. The Aggregates Impact Value (AIV) Apparatus is used to determine the aggregate impact value which provides a relative measure of the resistance of an aggregate to sudden shock or impact. The counter fitted to the machine automatically records the number of blows delivered to the sample.
This impact load can break aggregate into smaller pieces and which results in the failure of roads and pavements. Impact Test of Aggregate. It is the ability of aggregates that resist sudden impact or shock load on it. Also, it can be defined as the resistance of aggregate to failure by impact load is known as the Impact Test of Aggregate.
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 strength properties. Aggregate Impact Value; Test Specifications:
Procedure of Aggregate Impact value test. The test sample: normally aggregates sized 10.0 mm to 12.5 mm. the aggregates should be dried by heating at 100-110 0C for a period of 4 hours and cooled. Sieve the material through 12.5mm and 10.0 mm IS sieves. The aggregates passing through 12.5 mm sieve comprises the test …
Procedure. Step 1 – First, the aggregate sample sieve through 12.5mm sieve and collect it which is retained in 10 mm sieve. Step 2 – Now, the sample should be dried through the oven up to 4 hours at 100 deg to 110 deg. Step 3 – Then, the aggregate sample should be filled in the metal cup by 3 layers. Each layer should be tamped 25 times by the tamping rod.
Applications of Aggregate Crushing Test It 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. ~hus the test can be used to assess the suitability of aggregates with reference to the crushing strength for various ...
AIV test is conducted to determine the Aggregate Impact Value of Coarse aggregate. 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 ...
Aggregates Impact Test (AIV) Introduction: Impact value of an aggregate is the percentage loss of weight particles passing 2.36mm sieve by the application of load by means of 15 blows of standard hammer and drop, under specified test condition. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock ...
It is the % of fine material which is crushed after the application of load w.r.t. total weight of material. Test specifications: The test sample shall consist of aggregates which passes through ½ in B.S. test sieve and is retained on a 3/8 in B.S. test sieve. The aggregate comprising the test sample should be dried in an oven for a period of ...
AGGREGATE IMPACT VALUE This test is done to determine the aggregate impact value of coarse aggregates as per IS: 2386 (Part IV) – 1963. 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 […]
These two aggregate samples were tested for sieve analysis test, relative density test, water absorption test, ten percent fine test, aggregate crushing value test (ACV), Aggregate impact value test (AIV), and Abrasion value test. Findings revealed that the best aggregate for road construction is the aggregate …
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 the test specimen passing 2.36 mm test sieve.
From the test have been do, the value of AIV is 29.2 for test 1, 29.8 fortest 2 and 29.8 for test 3. The average of AIV is 29.6. From the test, the classification of the aggregate is satisfactory for road surfacing. This mean the type of aggregate can be use in the construction of roadwork.
Determination of aggregate impact value (AIV) of given. Aggregate Impact value: It is the % of fine material which is crushed after the application of load w.r.t. total weight of material. Test specifications: The test sample shall consist of aggregates which passes through ½ in B.S. test sieve and is retained on a 3/8 in B.S. test ...
Oct 27, 2017· The Impact value of an aggregate is the percentage loss of weight particles passing 2.36mm sieve by the application of load by means of 15 blows of standard hammer and drop, under specified test condition. AIV gives A relative measure of the resistance of an aggregate to sudden impact, which is differs from withstand to slowly ...
3. PREPARATION OF TEST SAMPLE 3.1 The test sample shall consist ofaggregate the whole ofwhich passes a 12'5-mmIS Sieve and is retained on a lO-mm IS Sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours till the time, the weight becomes constant at a temperature of lOj to ]10°C and cooled.
according to applications) h. Aggregate Impact Value (AIV) Standard Test Method and Specification used: BS 812:1990:Part112, BS 882:1992(Ref.1). Test results obtained from aggregate impact value test are summarized in Table 9:
Two methods are used to test aggregate in two different conditions. 1. Aggregate in dry condition . 2. Aggregate in wet condition (Socked) Both methods are applicable to aggregates between the sizes of 14mm - 2.36mm. Normally in Sri Lanka, a sample with the crushing aggregate in between 14mm sieve passing and 10mm sieve retaining can be prepared.
Results of AIV test for MWA and CA samples ERA 2013 Governing Sample Name Average AIV, (%) Specification MWA 26.21 AIV<30% CA 4.61 3.1.7 Los Angles Abrasion Test (LAA) Results for MWA and CA As it was clearly seen from Table 9 the test result shows that before blending MWA with CA both samples were within the allowable ERA standard ...
Aggregate Impact Value. The test sample shall consist of aggregates the whole of which passes through ½ in B.S. test sieve and is retained on a 3/8 in B.S. test sieve. The aggregate comprising the test sample shall be dried in an oven for a period of four hours at a temperature of 100-110 °C and cooled.The measuring cup shall be filled about ...
APPLICATION S OF AGGREGATE IMPACT VALUE. Aggregate having AIV % less 50% is better to use in construction where as those having value more than 50% are bad for construction. It is reliable to calculate the AIV % of the aggregate …
Aggregate Impact Value (AIV) is the percentage of fines produced from the aggregate sample after subjecting it to a standard amount of impact. The standard amount of impact is produced by a known weight, i.e. a steel cylinder, falling a set height, a prescribed number of times, onto an amount of aggregate of standard size and weight retained in ...
The reductions of AIV test results are 18.4, 8 and 14.3 % for marble, limestone and granite, respectively. The correlation between AIV of aggregate with natural moisture and saturated condition for all rock types is illustrated in Fig. 5b and is shown in Eq. 2 which has an R 2 value of 0.93.
Purpose of the test: The Impact value of an aggregate is the percentage loss of weight particles passing 2.36mm sieve by the application of load by means of 15 blows of standard hammer and drop, under specified test condition. AIV gives A relative measure of the resistance of an aggregate to sudden impact, which is differs from withstand to ...
Aggregate Crushing Value test. 23 Jan 2018 5 Sep 2018. AIM: To determine the aggregate crushing value of coarse aggregates as per IS: 2386 (Part IV) - 1963. APPARATUS: i) Cylindrical measure and plunger ii) Compression testing machine iii) IS….
