Tests On Road Aggregate Aggregate Impact Test; The aggregate impact test is carried out to evaluate the resistance to the impact of aggregates to fracture under repeated impacts; the test has been standardised by the Bureau of Indian Standards BIS The aggregate impact testing machine is used to carry out this test
The strength of coarse aggregates is assessed by aggregates impact test The aggregate impact value provides are lative measure of resistance tocrushing under a gradually applied compressive load To achieve a high quality of pavement lower aggregate impact value should be preferred Toughness is the property of a material to resistimpact
Point load testing is used to determine rock strength indexes in geotechnical practice The point load test apparatus and procedure enables economical testing of core or lump rock samples in
Test on aggregates Aggregate Sample Requirement Sieve Size recommended to calculate weight loss Crushing Value Test Passing through mm sieve and retained on 10 mm sieve mm Impact Value Test Passing through mm sieve and retained on 10 mm sieve mm Los Angeles Abrasion Test Passing through mm sieve and retained
Procedure of Aggregate Impact Test The test sample consists of aggregates sized mm mm Aggregates may be dried by heating at 100 110° C for a period of 4 hours and cooled i Sieve the material through mm and IS sieves The aggregates passing through sieve and retained on sieve comprises the test material
Aggregate test is a process of performing certain tests on aggregates as it is one of the main components of concrete it is necessary to have certain checks for the physical properties quality and suitability of aggregates for specific applications in construction projects Different types of Aggregate tests are conducted in the laboratory and field based on project
Aggregate Impact Value; Test Specifications Aggregate Impact Value The test sample shall consist of aggregates the whole of which passes through ½ in test sieve and is retained on a 3/8 in 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
3 The impact test is a type of quality control test for highway pavements that is used to determine the suitability of aggregates for use in highway pavement construction Aggregates used in road construction should be strong enough to resist abrasion crushing and impact load Objective Based on the impact value we can decide whether the coarse
This lab report summarizes an experiment to determine the aggregate impact value AIV of a sample The AIV test subjects aggregate samples to standard impacts from a dropping weight to assess their resistance to shock or impact The procedure involves compacting 350g of aggregate between 10 14mm in size into a cup subjecting it to 15 blows then sieving
Part B Highway Materials Lab 1 Tests on Aggregates a Aggregate Crushing value b Los Angeles abrasion test c Aggregate impact test d Aggregate shape tests combined index and angularity number 2 Tests on Bituminous Materials a Penetration test b Ductility test c Softening point test d Specific gravity test e Viscosity test by tar
Test on aggregates Aggregate Sample Requirement Sieve Size recommended to calculate weight loss Crushing Value Test Passing through mm sieve and retained on 10 mm sieve mm Impact Value Test Passing through mm sieve and retained on 10 mm sieve mm Los Angeles Abrasion Test Passing through mm sieve and retained
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 slowly applied compressive load With aggregate of aggregate impact value AIV higher than 30 the result may be anomalous In addition aggregate sizes larger than 15 mm
Clarification The sample after removing from the abrasion machine is passed through mm sieve and the weight is noted down mm is used in the impact and crushing test on aggregates 10 The aggregate impact test was conducted on a sample and the following readings were taken Weight of sample taken = 350 g
OBJECTIVE To determine the aggregates impact value AIV of aggregate 3 The weight of the empty cylinder was weighed 4 Aggregate was filled into a steel cylinder in three layers Each aggregate layer was LABORATORY 6 HIGHWAY
Attempt Test Highway Materials and Testing 2 10 questions in 30 minutes Mock test for Civil Engineering CE preparation Free important questions MCQ to study for Civil Engineering CE Exam Download free PDF with solutions The aggregate impact value is obtained as the ratio of the weight of sample passing mm sieve to the
% %Óëá 1 0 obj > endobj 2 0 obj > stream ÿØÿ JFIF ÿÛC ÿÛC ÿÀ ¼ " ÿÄ ÿĵ } 1A Qa "q 2 ¡ #B±Á RÑð$3br‚ %& 456789
AGGREGATE CRUSHING VALUE TEST 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
Procedures for obtaining aggregate samples from project sites for quality tests Aggregate Sampling Testing and Quality Assurance 33 and porosity to also report the testing procedures for example ASTM AASHTO or agency developed specification The number of agencies at each category for individual tests are summarized in Table 3 3
Course Educational Objectives To introduce Aggregate Crushing value 2 Aggregate Impact Test 3 Specific Gravity and Water Absorption 4 Attrition Test 5 Abrasion Test 6 Shape tests 120 G V P College of Engineering Autonomous 2013 BITUMINOUS MATERIALS 7 Viscosity Test
I A good value of AIV test in highway engineering is >10% which is exceptionally strong 10% 20% strong 20% 30% satisfactory for road surfacing and >35% is weak for road surfacing In this experiment that we carried out our aggregate impact value AIV is % which is in the range of 20% 30% and it is satisfactory for road surfacing II
Test on aggregates Aggregate Sample Requirement Sieve Size recommended to calculate weight loss Crushing Value Test Passing through mm sieve and retained on 10 mm sieve mm Impact Value Test Passing through mm sieve and retained on 10 mm sieve mm Los Angeles Abrasion Test Passing through mm sieve and retained
The aggregate impact test is carried out to evaluate the resistance to impact of aggregates Aggregates passing mm sieve and retained on 10 mm sieve is filled in a cylindrical steel cup of internal dia mm and depth 5 cm which is attached to a metal base of impact testing machine The material is filled in 3 layers where each layer is
aggregate samples to calculate the LA abrasion loss The authors found that the LA abrasion test was a consistent method of detecting weak materials and was a means of pre dicting aggregate impact value and aggregate crushing value Wylde 11
© Copyright 2024 By Ore Crushing Equipment Manufacturer
