This could be attributed to old mortar surrounding the aggregates thereby creating a fundamental difference between the recycled and natural aggregates (Martin-Morales et al., 2011). Recycled aggregate can be in the fine or ... specific density, aggregate crushing value and 10% fine value were performed following (BS 812 …

If the aggregates are weak, the integrity of the structure may be adversely affected. The strength of the aggregates here is measured in a crushing test. The TFV gives a relative measure of an aggregate to crushing under a gradually applied load. The test is also known as the 10% Fines Aggregate Crushing Test (10% FACT).

The 10% fines value is a metric that gauges the ability of aggregates to withstand crushing under loading, and it is applicable to both weak and strong …

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.

This test is quite similar to the aggregate crushing test, which measures the amount of fines material crushed as a percentage of the initial mass. When aggregate is subjected to mechanical degradation, its characteristics can be disclosed using a 10% fines value. Apparatus. A 15.2 cm diameter steel cylinder with a plunger and a base plate.

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Do the calculations as set out in SABS Method 842 and report the force to the nearest 10 kN for forces of 100 kN or more, or to the nearest 5 kN for forces of less than 100 kN, on Form B4/3 (or a similar) form. REFERENCE SABS Method 842 S.A. BUREAU OF STANDARDS STANDARD METHODS SABS Method 842 FACT value (10 % fines aggregate …

Ten percent fines value is a measure of the resistance of aggregate crushing subjected to loading and it is applicable to both weak and strong aggregate. Fine aggregates are …

as the 10% Fines Value. 3.2 The median of four results is calculated by excluding the highest and the lowest result and. calculating the mean of the two middle results. 3.3 The report shall affirm whether a certificate of …

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The average aggregate crushing value (ACV) and the aggregate impact value (AIV) obtained from the evaluations is 28.7% and 29.5% respectively and are within the acceptable standard limits. The specific gravity and …

Suttle Natural Stone in the U.K. test 1. test 2. mass of sample + mould + base plate: 15361.0. 15401.0. … ten percent fines value (tfv) of wet/ dry aggregate (nearest 10kn for forces of 100 kn=) 130.

Mechanical Properties of Aggregates Aggregate Crushing Value Test (BS:812, part 3) Procedure • The material to be tested should pass a 14.0 mm (1/2 in.) sieve and be retained on a 10 mm (3/8 in.) sieve. • Dry the sample in an oven at 100-110 0 C for four hours. • Place the sample in a standard cylindrical mould and tamp it. • Put a plunger on the top of the …

Results of the physical properties show the rock has a mean PVU of 4859 m/s, a bulk dry specific gravity (Gsb) of 2.64, and very low water absorption capacity ranging from 0.2-5.7%, and Na2SO4 ...

The results of aggregate crushing value (ACV) and aggregate impact value (AIV) for MCSH are 28.4 % and 15.06 % respectively, for MCSF are 30.7 % and 19.5 % ... It could be observed from Table 2 that the specific gravity for the fine aggregates is 2.65 which falls within the standard. Also, the value of moisture content is 9.45 % which also ...

relationship between aggregate crushing value and ten percent fines value. Maximum crushing value of good quality of aggregate. Maximum crushing value of good quality of aggregate

The percentage fines is then determined as before. The material passing 2.36 mm is weighed (mass B) and expressed as a percentage of the original mass (mass A) to give the aggregate crushing value (ACV). ACV = B A. . . (4) RESULTS The average is taken of two tests and the result recorded as Aggregate Crushing Value. 14 Impact, 10% …

Tests on aggregate. 1. Aggregate crushing test. Objective Aggregates used in road construction should be strong enough to resist crushing under traffic wheel loads. If the aggregates are weak, the integrity of the pavement structure is likely to be adversely affected. The strength of coarse aggregates may be measured by the Aggregate …

Aggregates may be broadly classi fied as natural or artificial, both with respect to source and to method of preparation. Natural sands and gravels are the product of weathering and the action of wind or water, while manufactured crushed fine aggregate and crushed stone coarse and fine aggregate are produced by crushing natural stone.

This testing method is known as an aggregate crushing value test. The crushing value test of aggregate provides the resistance of an aggregate sample to crushing under a gradually applied compressive load. …

This method is not suitable for testing aggregates with a crushing value higher than 30, and in this case the ten percent fines value is recommended. 7.7.1.3 Method outline. A test specimen, of chosen fractions, is compacted in a standardised manner, into a steel …

Aggregate crushing Value provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Ten Percent Fines Value used for testing aggregate smaller than 10 mm. Comprises: 150 mm or 75mm diameter steel cylinder, plunger, base plate, tamping rod and metal measure.

Weak aggregates may break down during mixing, handling and compaction. Within British Standards, the mechanical properties of aggregate can be assessed from 10 per cent fines value or aggregate impact value. In the 10 per cent fines test, a load is applied to the 14–10 mm fraction of the aggregate.

between aggregate crushing value (ACV) and ten percent fines aggregate crushing value (TFV) for some aggregates in Nigeria. Such a mathematical relationship, usually established through regression

The method is applicable to aggregates of different strengths covering both weak and strong aggregates. It is applicable to standards aggregates, i.e. passing a 14,0 mm test sieve and retained on 10,0 mm test sieve.

It is recommended that the crushing value of aggregate should be less than 30%. If it is more than 30 % then 10% finer aggregate is suggested to use. 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.

10. If ACV > 30% then it is not acceptable and we will have to perform fine value test on this sample. 11. Fine value test is used for the same purpose with same apparatus. 12. Procedure is also the same as above mentioned except instead of applying 400 kN load in 10 mins we apply gradual load to cause total required penetration in 10 min 30 ...

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Load required for 10% fines = 14x / (y + 4) x = load in tones. y = mean percentage fines from two tests at x tone load. Report. The load required to produce 10% fines is reported to the nearest whole number for loads of 10 tones or more, the nearest 0.5 tones for loads of less than 10 tones. Safety & Precautions

7.7 Aggregate Crushing Value and 10% Fines Value 7.7.1 . 7.7 Aggregate Crushing Value and 10% Fines Value 7.7.1 Aggregate Crushing Value (ACV) 7.7.1.1 Introduction. One of the requirements, for the suitability of aggregates for construction, is the ability of the aggregate to resist crushing. The Aggregate Crushing Value gives a relative ...

2.2.3. Ten Percent Fine Value Test Ten percent fines value is an indication of the resistance of aggregate to crushing when subjected to loading. The test which was carried out in line with BS 812-111, determined the forces required to produce 10% of fine values. 2.2.4. Aggregate Crushing Value Test

number. Report the mean as the Aggregate Crushing Value, unless the individual results differ by more than 0.07 times the mean value. In this case repeat the test on two further specimens, calculate the median of the four results to the nearest whole number and report the median as the Aggregate Crushing Value. A data sheet is given as Form 7.7.1.

obtained from aggregate crushing value test are summarized in Table10: Table 9Aggregate crushing value results Statistics A.I.V. (%) Range 17-41 Mode 24 Specified maximum 25 for heavy duty concrete finishes limit 30 for pavement wearing surfaces 45for others j. 10% Fines Value Standard Test Method and Specification used: BS

Based on the research evaluated, the test for uncompacted voids in fine aggregate appears to be a reasonable screening tool for fine aggregates with respect to their rutting potential. The research supports the fact that some crushed fine aggregates with uncom- pacted voids contents between 43% and 45% can be used to produce rut-resistant mix ...