1、November 2014 Translation by DIN-Sprachendienst.English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 13.080.10!%“2270202www.din.deDDIN EN 16502Test method for the determination of the degree of soil acidity accordingto Baumann-Gully;English version EN 16502:2014,English translation of DIN EN 16502:2014-11Prfverfahren zur Bestimmung des Suregrades eines Bodens nach Baumann-Gully;Englische Fassung
3、EN 16502:2014,Englische bersetzung von DIN EN 16502:2014-11Mthode dessai pour la dtermination du degr dacidit des sols selon Baumann-Gully;Version anglaise EN 16502:2014,Traduction anglaise de DIN EN 16502:2014-11Partially supersedesDIN 4030-2:2008-06www.beuth.deDocument comprises 10 pagesIn case of
4、 doubt, the German-language original shall be considered authoritative.10.14DIN EN 16502:2014-11 2 A comma is used as the decimal marker. National foreword This document (EN 16502:2014) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products” (Secretariat: DIN, Germany). T
5、he responsible German body involved in its preparation was the DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-07-05 AA Prfverfahren fr Beton. This document supersedes parts of DIN 4030-2:2008-06, Assessment of water, soil and gases for
6、 their aggressiveness to concrete Part 2: Sampling and analysis of water and soil samples Amendments This standard differs from DIN ISO 4030-2:2008-06 as follows: a) the degree of acidity according to Baumann-Gully (former Subclause 6.3.2) has been adopted. Previous editions DIN 4030: 1954-09, 1969-
7、11 DIN 4030-1: 1991-06 DIN 4030-2: 2008-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16502 August 2014 ICS 13.080.10 English Version Test method for the determination of the degree of soil acidity according to Baumann-Gully Mthode dessai pour la dtermination du degr dacidit des sols selon
8、 Baumann-Gully Prfverfahren zur Bestimmung des Suregrades eines Bodens nach Baumann-Gully This European Standard was approved by CEN on 18 July 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
9、of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Germa
10、n). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia,
11、 Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Unite
12、d Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1
13、6502:2014 EEN 16502:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 5 5 Apparatus .5 6 Reagents .5 7 Laboratory sample .6 8 Procedure .6 9 Calculation of soil acidity .6 10 Test report 7 11 Precision .7 Bibliography 8 DIN EN 16502:2014-11
14、 EN 16502:2014 (E) 3 Foreword This document (EN 16502:2014) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical tex
15、t or by endorsement, at the latest by February 2015 and conflicting national standards shall be withdrawn at the latest by February 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held respons
16、ible for identifying any or all such patent rights. This European Standard is based on DIN 4030-2, Assessment of water, soil and gases for their aggressiveness to concrete Part 2: Sampling and analysis of water and soil samples. According to the CEN-CENELEC Internal Regulations, the national standar
17、ds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe
18、mbourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16502:2014-11 EN 16502:2014 (E) 4 1 Scope This European Standard specifies the procedure for the determination of the degree of acidity of a soil to be
19、 used for evaluating its class of aggressiveness to EN 206. The degree of acidity according to Baumann-Gully is the result of the determination of exchangeable hydrogen ion concentration that humic particles of a soil release. 2 Normative references The following documents, in whole or in part, are
20、normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 206, Concrete Specification, performance, production a
21、nd conformity EN ISO 385, Laboratory glassware Burettes (ISO 385) EN ISO 1042, Laboratory glassware One-mark volumetric flasks (ISO 1042) ISO 3310-1, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth ISO 11074, Soil quality Vocabulary 3 Terms and definitions For
22、the purposes of this document, the terms and definitions given in ISO 11074 and the following apply. 3.1 soil acidity SABGindicates the hydrolytic acidic level of a soil, expressed as the volume of solution of sodium hydroxide, in millilitres (ml) used per kilogram (kg) of dried soil 3.2 undisturbed
23、 sample bulk sample obtained from the soil using a method designed to preserve the soil structure 3.3 disturbed sample bulk sample, obtained from the soil without any attempt to preserve the soil structure 3.4 laboratory sample reduced sample derived from a bulk sample for laboratory inspection or t
24、esting 3.5 subsample sample obtained from the laboratory sample by means of a sample reduction procedure 3.6 test sample portion of material, resulting from the laboratory sample by means of an appropriate method of sample pre-treatment, and having the size necessary for the desired testing or analy
25、sis 3.7 check sample subsample kept for future analysis DIN EN 16502:2014-11 EN 16502:2014 (E) 5 3.8 test portion quantity of material, of proper size, for measurement of the concentration or other property of interest, removed from the test sample 3.9 constant mass mass reached when, during the dry
26、ing process, the difference between two successive weighings of the cooled sample, with an interval of 4 h between them, does not exceed 0,1 % (m/m) of the last determined mass 4 Principle This European Standard is intended for the determination of soil acidity by the addition of sodium acetate solu
27、tion to a prepared dried soil sample. Acetic acid is formed and the volume of sodium hydroxide solution needed to neutralize the acid is measured by volumetric titrimetry. The degree of acidity is expressed as the volume of solution of sodium hydroxide used per kilogram of air dried soil. 5 Apparatu
28、s 5.1 Standard laboratory glassware, Erlenmeyer narrow-neck flasks capacity 250 ml or beakers capacity 250 ml, tall form. 5.2 Plate sieve, of 2 mm aperture conforming to the requirements of ISO 3310-1, collecting pan. 5.3 Ventilated oven, thermostatically controlled to maintain a temperature (40 5)
29、C and (105 5) C. 5.4 Sample divider, of sufficient size to accommodate a sample of up to 2 kg. 5.5 Balances or scales, capable of weighing with a maximum permissible error of 0,01 g using a balance of accuracy class II, category 2. 5.6 Desiccator, containing a drying agent, e.g. silica gel. 5.7 Stir
30、rer, magnetic stirrer and magnetic stir bar coated with inert material, e.g. PTFE. 5.8 Volumetric glassware. The volumetric glassware shall be of analytical accuracy, i.e. class A as defined in EN ISO 385 and EN ISO 1042. 5.9 Filter paper, folded qualitative filter papers of grade 2V having 150 mm o
31、f diameter. 6 Reagents Use only reagents of recognized analytical quality. When used, distilled or deionized water shall have an electrical conductivity not greater than 0,1 mS/m. 6.1 Sodium acetate solution approximately 1 mol/l Dissolve 82,03 g of anhydrous sodium acetate in distilled or deionized
32、 water in a 1 000 ml volumetric flask and make up to volume with water. DIN EN 16502:2014-11 EN 16502:2014 (E) 6 6.2 Sodium hydroxide solution approximately 0,1 mol/l Dissolve 4,00 g of anhydrous sodium hydroxide pellets in water in a 1 000 ml volumetric flask and make up to volume with water. This
33、solution shall be prepared fresh every day or the titer determined each day prior to performing the analysis. 6.3 Phenolphthalein indicator solution Dissolve 0,10 g of phenolphthalein in 100 ml ethylalcohol (min. 90 %). 7 Laboratory sample For undisturbed soils, obtain a laboratory sample per identi
34、fied layer weighing between 1 kg to 2 kg. Laboratory sample should be taken according EN ISO 22475-1. For disturbed soils, the size and number of laboratory samples to be taken shall be agreed between the parties concerned. Laboratory sample should be taken according ISO 10381-2. Immediately after s
35、ampling, place the laboratory sample in a suitable air-tight container, e.g. a jar equipped with a screw-cap fitted with a rubber ring. 8 Procedure Remove the laboratory soil sample, taken in accordance with Clause 7, from the air-tight container, place it in a collecting pan and dry the sample in a
36、n oven kept at 40 C until constant mass is achieved. If a constant mass at 40 C is not achieved in 72 h, then the drying process should be completed at 105 C until constant mass is achieved. NOTE The drying process can be undertaken at 105 C provided there are no irreversible changes to the sample c
37、aused by the drying at this temperature Once dried to constant mass, crumble the laboratory sample gently, mix thoroughly and then divide it in two subsamples using, preferably, a sample divider. Retain one of them as a check sample and place it in air-tight storage container. Weigh and record the m
38、ass of the other subsample. Using the plate sieve (5.2), sieve the subsample and reclaim and weigh the fraction passing through the sieve (test sample). Discard the materiel retained on the sieve. Thoroughly mix the test sample and then take a test portion of (100 1) g. Record the mass of the test s
39、ample msample, in kilograms (kg). Mix this portion with (200 1) ml of the sodium acetate solution (6.1) and stir or shake continuously for at least 1 h or longer until the test sample is evenly dispersed. Filter the suspension on a dry filter paper (5.9), without re-washing. Titrate an aliquot corre
40、sponding to half of the volume of filtrate by adding the sodium hydroxide solution (6.2), using the phenolphthalein indicator (6.3) or any equivalent titration method. Record the volume V1in millilitres of sodium hydroxide solution (6.2) used to neutralize the acetic acid. 9 Calculation of soil acid
41、ity Calculate the degree of soil acidity according to Baumann-Gully, expressed as SABG, in millilitres of sodium hydroxide solution per kilogram of dried soil (ml/kg), from the following equation: SABG= 2 V1/ msamplewhere DIN EN 16502:2014-11 EN 16502:2014 (E) 7 V1is the volume of sodium hydroxide s
42、olution used for the titration of the aliquot, in millilitres; msampleis the mass of the test portion, in kilograms. 10 Test report The report shall include: a) a reference to this European Standard; b) location where sample(s) are obtained; c) description and identification of the each test specime
43、n; d) type of sample (untouched or modified); e) date of test; f) location where test is performed; g) mass of subsample used for sieving, in kilograms; h) mass of portion passing through the 2 mm sieve (test sample), in kilograms; i) mass of test portion, in kilograms; j) method used to titrate the
44、 filtrate; k) volume of sodium hydroxide solution used to neutralize the acetic acid, in millilitres; l) degree of soil acidity (SABG); m) any deviations from the standard method of testing; n) a declaration by the person responsible for the test that it has been carried out in accordance with the s
45、tandard except as detailed in item m). The report may include: o) mass of the original specimen, in kilograms; p) procedure used to collect the sample. 11 Precision There is currently no precision data for this test. DIN EN 16502:2014-11 EN 16502:2014 (E) 8 Bibliography EN ISO 3696, Water for analyt
46、ical laboratory use Specification and test methods (ISO 3696) EN ISO 22475-1, Geotechnical investigation and testing Sampling methods and groundwater measurements Part 1: Technical principles for execution (ISO 22475-1) ISO 10381-2, Soil quality Sampling Part 2: Guidance on sampling techniques ISO 1
47、1275, Soil quality Determination of unsaturated hydraulic conductivity and water-retention characteristic Winds evaporation method ISO 11465, Soil quality Determination of dry matter and water content on a mass basis Gravimetric method PANSU M., GAUTHEYROU J. Handbook of Soil Analysis. Mineralogical, Organic and Inorganic Methods. Springer-Verlag Berlin Heidelberg, New York, 2006 DIN 4030-2, Assessment of water, soil and gases for their aggressiveness to concrete Part 2: Sampling and analysis of water and soil samples DIN EN 16502:2014-11
