Processing capacity:160-1980t/h
Feeding size:194-1189mm
Appliable Materials: river pebble,granite,concrete,bluestone,iron ore,coal gangue,cobblestone,basalt,rock,Granite,pebbles, copper ore,limestone,cobblestone,iron ore,iron ore,glass,concrete,cement clinker,calcite etc.
Get PriceAggregate crushing value test introduction aggregates used in road construction should be strong enough to resist crushing under traffic wheelj loads if the aggregates are weak the stability of the pavement structure is likely to be adversely affected
The aggregate crushing value aggregate crushing value w1 w2 100 a value less than 10 signi es an exceptionally strong aggregate while above 35 would normally be regarded as weak aggregates piston load sample figure 221 crushing test setup 2232 abrasion test
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 this test must be done before it comes to road and pavement construction calculation table for aggregate crushing value test precaution
Aggregate crushing value ba x 100 the aggregate crushing value for should not be more than 30 for road construction and not more than 45 for other than road construction building construction aggregate impact value this test is done to determine the aggregate impact value of coarse aggregates as per is 2386 part iv 1963
Jun 18 2013 aggregate crushing value is 2386 part iv aggregate impact value is 2386 part iv impact value bitumen adhesion angularity number categories civil engineering articles civil engineering articles for mobile powerpoint presentations transportation engineering tags about road construction aggregate aggregates construction of road
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 125 mm sieves and retained 10 mm sieves are filled
Apply the load at uniform rate of 40 tonnes load in 10 minutes then stop the machine and crushed aggregate is sieved through 236mm sieve and aggregate passing 236mm sieve is weighed aggregate crushing value can be obtained from below formula aggregate crushing value
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
Aggregate abrasion value polishing stone introduction in 1950 increased traffic flows and higher speeds on trunk roads together with concerns about road safety led to research into the relationship between road materials and skidresistance research at the uk road research laboratory showed a significant relationship between polishing of aggregates used in road surfaces and skid resistance
20190517amp 0183amp 32aggregate 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
Aggregate impact tester with blow counter determination of aggregate impact value impact test on aggregates is done to carry out to determine the impact value of the road aggregates assess their suitability in road construction on the basis of impact value a testing machine
Dec 19 2019 if the aggregate crushing value is less than 10 it signifies an exceptionally strong aggregate whereas if the crushing value is 35 or above it would normally be considered as weak aggregate after performing the test the crushed material is separated and calculated in terms of percentage of the original weight taken in the mould
Asphalt road for aggregate crushing valuestone crusher asphalt road for aggregate crushing value greener road construction not only saves energy it can improve the fuel economy of the cars and trucks that roll on paved read more
Oct 03 2019 aggregate crushing value formula is given below aggregate crushing value w3 w or w3 w2 w1 w1 empty weight of cylindrical measure w2 weight of aggregate with cylindrical measure w w2 w1 weight of aggregate sample w3 weight of crushed aggregate sample passed through 236 mm is sieve
The aggregate crushing value aggregate crushing value w1 w2 100 a value less than 10 signi es an exceptionally strong aggregate while above 35 would normally be regarded as weak aggregates piston load sample figure 221 crushing test setup 2232 abrasion test
The aggregate crushing value is defin ed as a ratio of the weight of fines passing the specified sieve 236 mm to the total weight of the sample expressed as a percentage aggregate crushing value 35 weak for pavement aggregate crushing value 10 exceptionally strong rock group crushing value
Scopethis part of bs812 describes a method for the determination of the aggregate crushing value acv which gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load the method is applicable to aggregates passing a140mm test sieve and retained on a 100 mm test sieve
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 this test must be done before it comes to road and pavement construction calculation table for aggregate crushing value test precaution
This crushing index test apparatus is used to test the fine aggregate crushing resistance so as to evaluate the aggregate road construction applicability crushing index apparatus specifications mold size id 77mm depth 70mm pressure head dia 75mm metal
Asphalt road for aggregate crushing valuestone crusher asphalt road for aggregate crushing value greener road construction not only saves energy it can improve the fuel economy of the cars and trucks that roll on paved read more
Jun 18 2013 aggregate crushing value is 2386 part iv aggregate impact value is 2386 part iv impact value bitumen adhesion angularity number categories civil engineering articles civil engineering articles for mobile powerpoint presentations transportation engineering tags about road construction aggregate aggregates construction of road
Sep 12 2015 the aggregate crushing value provides a relative measure of resistance to crushing under gradually applied crushing load the specific gravity of aggregates normally used in road construction ranges from about 25 to 29 water absorption values ranges from 01 to about 20 percent for aggregates normally used in road surfacing
Apr 26 2018 the crushing value of the taken sample was 2475 the crushing value of the sample below 30 and 40 therefore the recycled aggregate can be used in both the base course and surface course of a pavement fig 1 test setup for crushing value test impact test the property of a material to resist impact is known as toughness
The tests for aggregate crushing value acv and fact 10 fines aggregate crushing test measure the crushing strength of broken rock these results do not necessarily relate to the exural or compressive strength of concrete made with that aggregate but are a useful index of overall quality normal values for acv range from 14 to 30 and for
Apply the load at uniform rate of 40 tonnes load in 10 minutes then stop the machine and crushed aggregate is sieved through 236mm sieve and aggregate passing 236mm sieve is weighed aggregate crushing value can be obtained from below formula aggregate crushing value
Aggregate impact tester with blow counter determination of aggregate impact value impact test on aggregates is done to carry out to determine the impact value of the road aggregates assess their suitability in road construction on the basis of impact value a testing machine
3reclaimed aggregaterap 4reclaimed asphalt pavementrap description rca is produced by crushing soundclean demolition waste of at least 955 by concrete weight and have total contaminant level typically lower than 1 of bulk mass gravelcrushed stonehydrauliccement concrete or suitable combination for premix concrete production
Feb 09 2016 blast furnace slag is the most commonly used artificial aggregate or lightweight aggregate evaluating quality of aggregates selecting an aggregate material for use in an asphalt concrete depends upon the availability cost and quality of the material as well as the type of construction that is intended
Jan 01 2017 the lower the figure the stronger the aggregate ie the greater its ability to resist crushing 30 aggregate crushing value aggregate passing is sieve 125 mm and retained on 10 mm sieve is generally used oven dried aggregates are filled in the measuring cylinder of 115cm dia amp 180cm height in 3 equal layers each layer being subjected
Dec 19 2019 if the aggregate crushing value is less than 10 it signifies an exceptionally strong aggregate whereas if the crushing value is 35 or above it would normally be considered as weak aggregate after performing the test the crushed material is separated and calculated in terms of percentage of the original weight taken in the mould
1 crushing value of aggregate is 2386 part iv 1963 the crushing value of the coarse aggregate is defined as the relative measure of the resistance which is offered by the aggregate to the crushing under the gradually applied load 2 impact value of aggregate is 2386 part iv 1963
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