EN 13383-2 PDF

NORME EUROPÉENNE. EUROPÄISCHE NORM. EN April ICS English version. Armourstone – Part 2: Test methods. Standard Swedish standard · SS-EN Armourstone – Part 2: Test methods. Status: Valid. Buy this standard. Price: 1 SEK. PDF. Add to cart. The European Standard EN has the status of a Swedish Standard. This document contains the official English version of EN.

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The subsample shall be taken by randomly selecting numbered pieces of armourstone until the required size of test portion is 1338-2. Calculate the cumulative percentage mass passing each sieve Pi from the following formula: A sample increment shall be taken by catching the discharge stream in a loader bucket, making sure that the complete cross-section of the stream of material is intercepted.

Determination of particle size distribution — Test sieves, nominal size of apertures ENTests for geometrical properties of aggregates — Part 3: When discharging 13383-22 sample from a grab, take all the material from one symmetrical quarter or half of the grab content, discharged between two vertically set plates at right angles to each other or at one side of a vertically set plate.

For this purpose, the cumulative masses smaller than and equal to every measured mass of a piece of armourstone expressed in percentage 133832 be plotted.

Armourstone – Part 2: Test methods

Gradings of which the pieces of armourstone are individually handled may be sampled at the most convenient location. The sampling report shall refer to this part of this European Standard and state: If this mass is greater than 80 kg, split the fraction, taking and weighing a representative part of at least 40 kg m2. Specifies sampling and test methods for natural, artificial and recycled aggregates for use as armourstone.

If a sampling increment of a coarse grading is too large as test portion, one of the procedures as described in 4. Examine and record crack formation. 13383-22

The average mass of the pieces of armourstone is derived by dividing the total mass excluding fragments by the number of pieces of armourstone. Test laboratories can determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used.

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Standard – Armourstone – Part 2: Test methods SS-EN –

1333-2 Calculate the average mass of the pieces of armourstone heavier than a fragment Mem 13383- kilograms to the nearest 1 kg in accordance with the following formula: For undated references, the latest edition of the referenced document including any amendments applies. Pass the sample in successive parts over the sieves in order of increasing sieve size, starting with the 63 mm sieve up to and including the mm sieve.

The test method consists of soaking at atmospheric pressure and storage in water for thorough water absorption see 9. If this accuracy cannot be met using the above procedure the calliper 7.

In the case of testing several test portions at the same time, these shall not be touching. For coarse gradings the test may be performed on representative parts of sieve fractions obtained from the determination of the particle size distribution Clause 5 containing a sufficient number of armourstones.

Method of sample reduction: Dispatch of the samples: Remove the test portion from the water and immediately remove the water from its surface using a moist chamois or equivalent synthetic leather, until the surface is dull and no longer wet and shiny, and weigh the test portion Eh.

The selection of the sampling scheme will depend on the relative size of the unloading equipment and the floating equipment. The sampling increments shall be spaced at approximately equal intervals, adjusted to take account of the required number of samples for the load to be sampled. Ensure that all pieces of armourstone which may pass the sieve in any orientation have so passed before the retained material is placed on the subsequent sieve.

For further information on grading, see EN The procedure is based on the testing of a test portion consisting of one piece of armourstone or part thereof, but it is permitted that several such test portions may be tested at the same time and share the boiling. Chemical analysis [2] EN NOTE The testing of water absorption is the first stage in the determination of the resistance to freezing and thawing of armourstone. Mechanically selected gradings should preferably be sampled from a stationary conveyor belt or from the stream of material.

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The floor shall be sufficiently clean and close-textured to be able to distinguish and recover the material of the sample from the floor material.

Methods to be used for sample reduction are also given. The Amber document status indicator indicates that some caution is needed when using this document – it is either: Examine the test portion visually and note any open cracks or other signs of disintegration. Sampling increments shall be taken from across the pile by removing, at random or at equally distributed locations, adequate quantities of material whilst avoiding the possibly segregated material at the start and finish of the pile see Figure 1.

BS EN 13383-2:2013

Cut the piece of armourstone to give two sawn test portions, and mark each for identification. The required number of sampling increments shall be taken at approximately equal 133832 from the whole of the load to be sampled. This European Standard specifies the reference methods to be used for type testing and in case of dispute where an alternative method has been used.

Where segregation is present in one direction of the deposited sample, place the wire in the same direction see Figure 2 and take the subsample by removing all armourstone located, or for the largest part located, at one side of the imagined vertical plane projected by the wire. A comparison may be made between the test portion under test and the 133383-2 test portion.

Sampling increments shall be selected by one of the 13338-2 methods: Determine the percentage by weight associated with each 133832- mass as follows: NOTE For guidance on numbers and sizes of samples and test portions for testing armourstone as specified in EN Execute the split by discharging the homogenised material over two adjoining receivers taking care to avoid any loss of material.

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