Formola of crushing strenthg 20 mm fine aggregates

2.2 Fine aggregate River sand was used. The properties of fine aggregate are, ... crusher to crush the steel slag for 12 to 20 mm size of coarse aggregate. Specific gravity : 3.17 Crushing value : 29.3% ... compressive strength was calculated by using this formula c = N/mm2 Where

Mar 28, 2021 Mar 28, 2021 Aggregate crushing test is done to find out the strength of aggregate which is the fundamental and essential components of concrete, flexible pavements, etc. More than 70 to 80 per cent of the volume of concrete is aggregate. Aggregates are a very important component of concrete, so the quality really matters when it comes to aggregates

The results of the compressive strength test are shown in Table No.- 3.8.2.A) From the graph shown in the Fig.5..1., 100 % replacement of fine aggregate (natural sand with robo sand)has been observed as an optimal strength than other proportions at 7and 28 days Graph 4.1 showing Compressive Strength of two types of concrete 4.2 Split tensile

Jun 24, 2013 4 sieve), while fine aggregate is less than mm (passing the No. … The density of the aggregates is required in mixture proportioning to establish … In normal concrete the aggregate weighs 1,520 – 1,680 kg / m3 , but occasionally designs

The crushed aggregate sample which is finer than 2.36 mm is separated and expressed as a percentage of the original weight taken in the mould. The percentage of weight passed through the 2.36m IS sieve is known as Aggregate crushing value.. In situations, when the aggregate value 30 or higher the result may be a mistake and in such cases, the “ten percent fines value” should be determined

Aggregate used in road construction, should be strong enough to resist crushing under traffic wheel loads. If the aggregates are weak the stability of the pavement structure is likely to be adversely affected. The strength of coarse aggregates is assessed by aggregate crushing test

basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and ... 3.20 Fracture specimen load-deflection curves for normal and ... higher strength coarse aggregates typically yield higher compressive strengths, while in normal-strength concretes, coarse aggregate strength

Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive load. Coarse aggregate crushing value is the percentage by weight of the crushed material obtained when test aggregates are subjected to a specified load under standardized conditions

The sieves used of concrete aggregate consist of a series in which the clear openings or sieves are 4.75 mm, 10 mm, 20 mm, 40 mm, 80 mm, for coarse aggregates, 2.36 mm, 1.18 mm, 600 microns, 150 microns, for fine aggregates. When as consecutive opening sizes are constantly doubled, the lines at equal intervals represent successive sizes on a

The graded coarse aggregate is defined by its nominal size i.e., 40 mm, 20 mm, 16 mm, 12.5 mm, etc. For example, a graded aggregate of nominal size 12.5 mm means an aggregate most of which passes the 12.5 mm IS Sieve. Because the aggregates are formed due to natural disintegration of rocks or by the artificial crushing of rock or gravel, they

4 Fineness 6.1684 As per IS: 2386(part-1) lies in range of (6-7) for 20 mm Aggregate size 5 Impact strength 16.15% Should Not more than 30% For concrete works 6 Crushing strength 20.57% Should Not more than 30% For concrete works III.TEST RESULTS FOR FRESH PROPERTIES

Clarification: First sieve the sample aggregate, aggregate passing 12.5mm sieve and retaining 10mm sieve is oven dries at 100-110 o C for 3-4 hrs. 10. Aggregate abrasion value is determined by_____ a) Aggregates crushing strength b) Los Angeles abrasion test c) Aggregates Impact value test d) Ten percent fine test Answer: b

40 mm 20 mm 10 mm 4.8 mm Fine Flaky aggregate are the aggregates whose least dimension is less than 3/5th of its mean dimension i.e. the mean dimension of an aggregate passing through 40 mm sieve and retained on 20 mm sieve is 40+20/2 = 30 mm. Now if the least dimension is less than18 mm

The results of the compressive strength test are shown in Table No.- 3.8.2.A) From the graph shown in the Fig.5..1., 100 % replacement of fine aggregate (natural sand with robo sand)has been observed as an optimal strength than other proportions at 7and 28 days Graph 4.1 showing Compressive Strength of two types of concrete 4.2 Split tensile

May 17, 2019 Procedure The aggregate sample: The material for the standard test consists of aggregates sized 10.0 mm to 12.5 mm.The aggregates must be in a surface dry condition before testing. The aggregates may be dried by heating at 100 oC – 110 o C for not more than 4 hours and cooled to room temperature before testing, if necessary

Jul 07, 2014 Jul 07, 2014 For example 20 mm single size aggregate mean an aggregate most of which passes 20 mm IS sieve and its major portion is retained on 10 mm IS sieve. All in Aggregate. It is the aggregate composed of both fine aggregate and coarse aggregate. According to size All-in-aggregate is described as all-in-aggregates of its nominal size, i.e. 40mm, 20mm etc