2013-3-25 · Briefly explain the aggregate crushing value test procedure. ROAD AGGREGATES For the L.A. abrasion test, the portion of an aggregate sample retained on the 1.70 mm … required for various grades of stone aggregates are given in Table …

2015-3-4 · Aggregate sizes shall be specified using a pair of sieve sizes selected from the basic set, or the basic set plus set 1, or the basic set plus set 2 in Table 1. A combination of sizes from set 1 and set 2 is not permissible. Aggregate sizes shall have D/d not less than 1,4.

2014-12-19 · CALCULATION: • Aggregate crushing value = B/A x • The result should be recorded to the first decimal place and the mean of the two results reported. • To achieve a high quality of pavement, aggregate possessing low …

2022-1-5 · Abrasion Test is the measure of aggregate toughness and abrasion resistance such as crushing, degradation and disintegration. This test is suggested by AASHTO T 96 or ASTM C 131: Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in Los Angeles Machine. The aggregates are used for the surface course of the highway ...

2017-5-29 · The apparatus of the aggregate crushing value test as per IS: 2386 (Part IV) – 1963 consists of: 1) A 15cm diameter open ended steel cylinder with plunger and base plate, of the general form and dimensions as shown in Fig 1. 2) A straight metal tamping rod of circular cross-section 16mm diameter and 45 to 60

2017-4-13 · Aggregate Crushing Value Test - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation …

2012-2-8 · 6. Impact, 10% Fines & Crushing Tests If the percentage fines exceeds 30, the result may be anomalous as the broken pieces of aggregate will tend to fill the voids and prevent further crushing. In this case, the Ten Percent Fines Test …

2014-2-1 · The impact value is some times used as an alternative to its crushing value. Material passing 12.5mm and retained on 10mm sieve is taken. 13 14. AGGREGATE CRUSHING VALUE:The aggregate crushing value gives a …

NOTE 3 When an aggregate impact value (AIV) as determined by the procedure given in BS 812-112 is available, the force required (in kW) for the first ten per cent fines test can be estimated by means of the following equation more conveniently than by the use of the dial gauge. Grading of the aggregate Minimum mass of the test portiona mm kg ...

2019-5-17 · Concept and significance of the Aggregate crushing value test. The '' aggregate crushing value test ` gives a relative measure of the resistance of an …

2021-10-14 · Aggregate impact and crushing test - SlideShare. Feb 08, 2012· The aggregate impact value (AIV) is B AIV = × 100 (%) . . . (1) ARESULTSAn average is taken of the two tests and the result is recorded to the nearestwhole number as the Aggregate Impact Value.The AIV is normally about 105 …

2021-10-30 · 22/07/2014 4. Requirement of Aggregate: The crushed stone aggregate shall conform to the. following quality: a) The Flakiness index shall not more then 35%. b) The Aggregate Crushing value shall be less than. 30%. c) Ten percent fines shall more than 175 KN. d) Loss of sodium sulphate soundness less than 10%.

Methods for determination of ten per cent fines value 0 12 BS 812-105.2-1990 Testing aggregates.Methods for determination of particle shape.Elongation index of …

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 …

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 12.5 mm sieves and retained 10 mm sieves are filled ...

2020-7-31 · must form part of the Contractor''s aggregate production procedure. The actual particle size distribution of each coarse and fine aggregate material may vary from the nominated value within the tolerances shown in Table 7.3. The Contractor may adopt wider tolerances where they can demonstrate to the

2019-7-1 · gravity of coarse aggregate was determined as 2.309. It was 13% reduce from standard value 2.67 which is in the range from 2.5 to 3.0. The Specific gravity of fine aggregate was also accurate. E. Aggregate Crushing value test: This test was performed as per IS: 2386 (Part IV) – 1963. The crushing value of RCA was 20%.

2014-9-13 · Aggregate including the crushed portion should be sieved on 2.36mm sieve Weigh the material which passes the sieve. 30. 09/13/14 CALCULATION Total weight of dry sample = W1 Grams Weight of the crushed material passing …

2022-1-1 · safety and precautions for aggregate impact value test. Ready Reckoner · Reinforcement Guide · Area of bars · RepairProtection Guide · Safety Guide This characteristic is measured by impact value test The aggregate impact value is a measure of resistance to sudden impact or shock which may differ how did u minimise the errors and wht precautions should we …

2016-10-1 · The aggregate crushing strength value is a useful factor to know the behavior of aggregates when subjected to compressive loads. Also read: Crushing Value Test of Aggregates. 13. Impact Value. The aggregate impact value gives a relative measure of the resistance of an aggregate to sudden shock or impact.

2015-1-13 · Physical Prosperities of Aggregate : Grading Grading is the particle-size distribution of an aggregate as determined by a sieve analysis using wire mesh sieves with square openings. As per IS:2386(Part-1) Fine aggregate : 6 standard sieves with openings from 150 μm to 4.75 mm. (150 μm, 300 μm, 600 μm, 1.18mm, 2.36mm,

Aggregate crushing value test on coarse aggregates gives a relative measure of the resistance of an aggregate crushing under gradually applied compressive …

2020-1-3 · 600-700 TPH Jaw & Cone Crushing Plant. The JOYAL 600-700TPH Jaw & Cone Crushing Plant a crushing and screening system, which includes GZD1500*6000 vibrating feeder,PE1200*1500 jaw crusher,ZYS66"-B cone crusher,2YZS2460 …

2013-3-21 · The aggregate crushing value is defin ed as a ratio of the weight, of fines passing the specified sieve (2.36 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 Basalt 14 Granite 20

aggregate crushing value test for ppt. Ppt Aggregate-crushing-test Powerpoint Presentations and PPT Find PowerPoint Presentations and Slides using the power of XPowerPoint... Know More. Aggregates Aggregate Testing Laboratory Concrete.

36. Explain aggregate crushing value. How would you express? 37. Aggregate crushing value of material A is 40 and that of B is 25. Which one is better and why? 38. How is aggregate impact value expressed? 39. Aggregate impact value material A is 20 and that of B is 45. Which one is better for surface course? Why? 40.

2019-5-17 · Concept and significance of the Aggregate crushing value test. The '' aggregate crushing value test ` gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Aggregate …

2014-6-16 · Aggregates occupy 60 to 80 percent of the volume of concrete / 70 to 85 percent of the weight of concrete. All aggregates must be essentially free of silt (size 60 - 2 m) and / or organic matter. Coarse aggregate Maximum size 200 mm for mass concrete Nominal size of 20 mm for normal concrete Moisture content 0. % - 4% Bulk density 1500 - 1600 kg / m 3 …

The aggregate crushing value is an essential index in the construction of road bases and is defined as the mass percentage of fine particles after a confined compression test of recycled CDW. In ...

Aggregate crushing value can be obtained from below formula: Aggregate crushing value = (W2/W1) *100 % (b) Aggregate Impact value test: Impact value of aggregate will give aggregate capability against sudden loads or forces. For this test also aggregate passing through 12.5mm and retained on 10mm sieve is taken and oven dried.

2020-12-24 · • Particle size distribution of coarse aggregate obtained from demolition waste (concrete block) has been carried out. • Determined the specific gravity of coarse aggregate in laboratory. • Aggregate crushing value test has been performed on coarse aggregates. • Determination of water absorption of coarse aggregate has been carried out.

36. Explain aggregate crushing value. How would you express? 37. Aggregate crushing value of material A is 40 and that of B is 25. Which one is better and why? 38. How is aggregate impact value expressed? 39. Aggregate impact value …

2019-9-3 · 3 Aggregate crushing value/Ten Percent Fines Value (Clause 5.4.1) - Steel cylinder [As per clause 2.2.(a) and Fig 1 of IS 2386(Part 1) : 1963] - Metal tamping rod - Weighing balance - IS sieves -12.5 mm, 10 mm & 2.36 mm - Compression testing machine - Cylindrical metal measures of 15.0 cm and 7.5 cm dia. - Oven

2022-1-5 · 12. Crushing value of aggregate. Determination of the crushing value of an aggregate is helpful to find the compressive strength of the aggregate, whether it is suitable for the concrete work or not. One of the important properties of aggregates affects the overall strength of the structure. 13. Impact value of aggregate