BS EN 1744-1 PDF

BS EN +A Licensed to Mr George Calvar on 26 May 1 user personal license only. Copying, copy/pasting, storage & distribution or use. BS EN BS EN , incorporating amendment no. 1. BS EN +A, incorporating Corrigendum May BS EN . Specifies reference procedures, and in certain cases an alternative method, for the chemical analysis of aggregates. Document History. Supersedes BS EN.

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For other purposes, in particular factory production control, other methods may be used provided that an appropriate 17441- relationship with the reference method has been established. Users are responsible for its correct application.

Pipette 20 ml of the standard potassium iodate solution into a ml conical flask and dilute with approximately ml of water. The chloride ions are precipitated from the extracts by means of a standard silver nitrate solution. Vary the water content successively and measure the consistence of each trial mix until the correct value of consistence is attained.

Compounds of Fe III produce a brown colour in hydrochloric acid. Wash out the flask three times with a total of 50 ml propanol 4. NOTE By measuring the conductance during extraction time, the dissolution of the free lime bd be monitored directly. Leave to stand for at least 24 h and filter through a medium grade filter paper. Transfer the test specimens 7. Record the mass of the dried test portion m9 to the nearest 0,1 g. The amount of material required for each individual sample is 4,5 kg.

In order not to register the lifting movements 17444-1 with this, do not begin recording the displacement until steam is passing freely through the sample.

After 4 h the interval can be extended to 60 min. Dry the sub-sample in a drying oven 5. Customers who bought this product also bought BS EN An aggregate test specimen is extracted with water to remove chloride ions. Record the stiffening times of the duplicate test portions of unheated and heated control aggregates.

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Vigorously shake the test tube for 10 s and read the spectrophotometer result. The standards should cover the range of sulfur content expected. Determination of consistence of fresh mortar by plunger penetration ENMethods of test for mortar for masonry — Part 9: It presents the UK view on standards in Europe and 11744-1 the international level. Please download Chrome or Firefox or view our browser tips. NOTE 3 The value of conductance of the blank solution of ethanediol should be established for each determination and 17441 from the test solution.

Find Similar Items This b falls into the following categories. Please copy and paste this embed script to where you want to embed Embed Script. For example, text altered by CEN amendment A1 is indicated by! Then pour some of the test portion into the glass bottle until the height of aggregate and solution is mm.

BS EN +A – Tests for chemical properties of aggregates. Chemical analysis

In accordance with the presumed een, transfer 50 ml or ml to a glass beaker using a pipette. NOTE 2 Ready for use solutions may be used as an alternative. The Red document status indicator indicates that the document is an old version The document has likely been withdrawn by the publisher, also the meta data presented here may be out of date as it is no longer being maintained by the editorial teams at NBS.

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This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. Record the total volume V5 of silver nitrate solution added. It is strongly recommended that this procedure is used as a preliminary check before using the test specified in Clause 7 to confirm compliance with a specification, if necessary. When aggregates containing sulfides e.

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Select measuring times for each background left and right of the peaks and the d-ranges that ensure statistic save analytical results.

NOTE 1 If the aggregate contains sulfides, e. For dated references, only the edition cited applies. Cover the beaker with a watch glass 5. Laboratory conditions should be as similar as practicable on the two mixing days. NOTE 2 Where a particular quarry has a history of occasionally producing aggregate containing iron sulfide, examination with a low power microscope by a technologist with experience of the quarry may be sufficient to determine whether or not the material is deleterious.

This is established by dissolving known quantities of calcium sulfate in hot water and measuring the absorbance of the test solutions. Calculate the mass of dried filler by subtracting the masses of the basin and the mass of the flasks, funnels and filter papers m These sets are listed in literature, i. Adjust the volume to about ml with demineralized water and warm up the content of the beaker to below the boiling point.

BS EN 1744-1:2009+A1:2012

Weigh the crucible and its contents. Carefully loosen the stopper, avoiding loss of solution and rinse the stopper with water, collecting the washings in the solution. Dilute to ml with water and add 10 ml of hydrochloric acid solution 4.