BS EN 13580-2002 Products and systems for the protection and repair of concrete structures - Test methods - Water absorption and resistance to alkali for hydrophobic impregnations《.pdf

1、BRITISH STANDARD BS EN 13580:2002 Products and systems for the protection and repair of concrete structures Test methods Water absorption and resistance to alkali for hydrophobic impregnations The European Standard EN 13580:2002 has the status of a British Standard ICS 91.080.40 BS EN 13580:2002 Thi

2、s British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 18 September 2002 BSI 18 September 2002 ISBN 0 580 40400 5 National foreword Th

3、is British Standard is the official English language version of EN 13580:2002. The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Protection and repair of concrete structures, which has the responsibility to: A list of organizations

4、 represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Corresponden

5、ce Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itse

6、lf confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and p

7、romulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since pub

8、lication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13580 August 2002 ICS 91.080.40 English version Products and systems for the protection and repair of concrete structures - Test Methods - Water absorption and resistance to alkali for hydrophobic impregnations Produ

9、its et systmes pour la protection et la rparation des structures en bton - Mthodes dessai - Absorption deau et rsistance aux alcalis pour imprgnations hydrofuges Produkte und Systeme fr den Schutz und die Instandsetzung von Betontragwerken - Prfverfahren - Wasseraufnahme und Alkalibestndigkeit fr hy

10、drophobierende Imprgnierungen This European Standard was approved by CEN on 23 December 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-dat

11、e lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the re

12、sponsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Ma

13、lta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CEN All rights of exploitation in any form and by any me

14、ans reserved worldwide for CEN national Members. Ref. No. EN 13580:2002 EEN 13580:2002 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Symbols 4 4 Principle5 5 Apparatus .5 6 Preparation of test specimens .5 7 Treatment6 8 Test procedure.7 9 Test report 8 Annex A (informative) 9 A

15、nnex B (informative) 10EN 13580:2002 (E) 3 Foreword This document (EN 13580:2002) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products“, the secretariat of which is held by DIN. It has been elaborated by Subcommittee SC 8 “Products and systems for the protection and rep

16、air of concrete structures”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2003, and conflicting national standards shall be withdrawn at the

17、latest by February 2003. The Annexes A and B are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,

18、 Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 13580:2002 (E) 4 1 Scope This European Standard specifies a test method to evaluate the effect of a hydrophobic impregnation. It deals with the rate at which treated concr

19、ete absorbs water and with the alkali resistance of that surface treatment. The method primarily relates to the protection of concrete structures. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references

20、are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest

21、 edition of the publication referred to applies (including amendments). EN 1766, Products and systems for the protection and repair of concrete structures Test methods Reference concretes for testing. EN 13579, Products and systems for the protection and repair of concrete structures Test methods Dr

22、ying test for hydrophobic impregnation. 3 Symbols Symbol Explanation Unit AR Absorption ratio % AR (alk) Absorption ratio after exposure to alkali % C m Mean consumption of impregnant during treatment g/m 2 C n Consumption of impregnant for each face of test cube during treatment g/m 2 i 1 Weight of

23、 a test cube at start of immersion test g i 2 Weight of a test cube at end of immersion test g I t Rate of increase in weight of a treated test cube g/(m 2 h 0,5 ) I t(alk) Rate of increase in weight of a treated test cube after exposure to alkali g/(m 2 h 0,5 ) I t m Mean rate of increase in weight

24、 of three treated test cubes g/(m 2 h 0,5 ) I tm(alk) Mean rate of increase in weight of three treated test cubes after exposure to alkali g/(m 2 h 0,5 ) I u Rate of increase in weight of an untreated test cube g/(m 2 h 0,5 ) I um Mean rate of increase in weight of three untreated test cubes g/(m 2

25、h 0,5 ) M t Estimated moisture content of each test cube after conditioning % M m Mean saturated surface dry moisture content of 3 oven dry test cubes % M ssd Saturated surface dry moisture content of a test cube % W od Estimated weight of a test cube in oven dry condition g W od Weight of a test cu

26、be in oven dry condition g W ssd Weight of a test cube in saturated surface dry condition g W t Actual weight of test cube after conditioning g W t1 Weight of test cube immediately prior to treatment g W t2 Weight of test cube immediately after treatment gEN 13580:2002 (E) 5 4 Principle Impregnants

27、applied to the surface of the concrete reduce the ingress of water and salt solutions into concrete. The principle of the test method described in this standard is to compare rate of uptake of water of treated and untreated test cubes from the same batch of concrete. The ratio of the rates is define

28、d as the absorption ratio. The long term durability is assessed by measuring the water absorption after a defined exposure to alkali. 5 Apparatus 5.1 Nine moulds for concrete cubes (100 mm x 100 mm x 100 mm). 5.2 Soft brush 5.3 Absorbent paper towel 5.4 Balance with an accuracy of 0,01 g. 5.5 Suppor

29、t for test cubes on bench in laboratory or in fume cupboard to allow air to circulate around all 6 faces. 5.6 Laboratory or chamber maintained at constant temperature (21 2) C and relative humidity of (60 10) % 5.7 Forced air circulation oven to run at (105 5) C. 5.8 Desiccator cabinet containing si

30、lica gel. 5.9 Fume cupboard. 5.10 Two suitable air tight boxes containing saturated potassium sulphate solution for storing specimens. Note that treated and untreated test cubes must be stored in separate boxes. 5.11 One 150 mm diameter petri dish with 2 spacers glued to bottom of dish to support th

31、e test cubes during treatment 5.12 Demineralised water (conductivity 50 S). 5.13 Six 5 l beakers with suitable spacers to support test cubes. 5.14 Potassium-hydroxide solution (5,6 g/l). 5.15 Cling film. 6 Preparation of test specimens Nine 100 mm concrete test cubes shall be cast from a single batc

32、h of Type C (0.45) concrete and cured for 28 days according to EN 1766. No oil or release agent will be permitted on the surface of the moulds (5.1). After removal from the curing tank, the test cubes shall be cleaned with tap water using a soft brush (5.2) to remove any loose material. The surface

33、of the test cubes shall not be grit blasted. The test cubes shall be surface dried with an absorbent paper towel (5.3) and then weighed (W ssd ) using the balance (5.4). Six test cubes (No. 1 - 6), suitably supported to allow air to circulate around each of the 6 faces (5.5), shall be conditioned on

34、 a bench in the laboratory (temperature (21 2) C and relative humidity (60 10) %) (5.6) for 7 days and reweighed (W t ). The remaining three test cubes (No. 7 - 9) shall be oven dried at (105 5) C (5.7) for 7 days, cooled in a desiccator cabinet containing silica gel (5.8) and reweighed (W od ). The

35、 saturated surface dry moisture content (M ssd ) of the 3 oven dry test cubes (No. 7 9), shall be calculated using the following formula :EN 13580:2002 (E) 6 100 od od ssd ssd W W W M in percentage by weight (1) The estimated oven dry weight (W od ) of each of the remaining 6 test cubes (No. 1 - 6)

36、shall be calculated using the formula : 100 1 Mm + WW ssd odin grams (2) where M m is the mean saturated surface dry moisture content of the 3 oven dry test cubes (No. 7 - 9), in percentage by weight. The estimated moisture content (M t ) of each of the test cubes after conditioning shall be calcula

37、ted from the weight, W t od od t t W W W M 100 in percentage by weight (3) The test cubes (No. 1 - 6) shall be weighed daily during conditioning from the fourth day until the weight W t obtained is equivalent to a moisture content of (5,0 0,5) %. 7 Treatment Three test cubes from the batch shall be

38、treated in a fume cupboard (5.9) with the fan on immediately after the conditioning. The 3 untreated test cubes shall be placed in an airtight box (5.10) over a saturated solution of potassium sulphate until required for the absorption test. Each cube shall be treated by dipping each face in the imp

39、regnant. Immediately prior to treatment of each face, the cube shall be weighed (W t1 ). 60 ml of the material shall be measured into a petri dish 150 mm in diameter (5.11). One side of the cube, supported on the 2 mm plastic spacers, shall be dipped in the material for (120 5) s, and then removed.

40、Excess liquid on the cube shall be allowed to drain back into the dish and the cube immediately reweighed (W t2 ). The excess material in the dish is then to be discarded. This procedure shall be repeated for first side of the other two cubes. The consumption (C n ) of the material for each face of

41、the cube shall be calculated as follows : 01 0 1 2 , W W C t t n in grams by square meters (4) The above procedure shall be repeated on the remaining faces of each of the cubes and the average consumption for each cube shall be calculated. The mean consumption (C m ) for the three test cubes shall b

42、e calculated. If the consumption is below the manufacturers recommended value the time of dipping can be extended. If it is not practical to treat test cubes by this method, the treatment should be carried out in accordance with the manufacturers instructions.EN 13580:2002 (E) 7 The cubes shall be s

43、tored, suitably supported to allow air to circulate around all 6 faces, in the fume cupboard (5.3) for (48 1) h after the start of treatment with the fan off. The treated cubes shall then be stored over a saturated potassium sulphate solution in an airtight box. Note that it is essential that the tr

44、eated and untreated cubes are stored in separate boxes. 8 Test procedure The tests shall either be carried out on 3 treated and 3 untreated test cubes prepared as described in sections 6 and 7 above or on test cubes that have been used previously for the drying test as described in prEN 13579. In bo

45、th cases, the absorption test shall commence 14 days after treatment. Sufficient demineralised water (Conductivity 50 S) (5.12) shall be placed into each of the 6 beakers (5.13) so that each test cube supported on a spacer will be fully covered with a head of (25 5) mm. The three treated and the thr

46、ee untreated test cubes shall each be weighed (i 1 ) and immersed in demineralised water. The treated and untreated test cubes shall be removed from the water after (24,0 0,1) hours and (1,00 0,02) hour respectively, surface dried with an absorbent cloth and reweighed (i 2 ). The rate of increase in

47、 weight for each treated test cube (I t ) shall be calculated from the equation : 06 0 24 1 2 , i i I t in 5 0 2 , h m g (5) and for each untreated test cube from the equation : 06 0 1 1 2 , i i I u in 5 0 2 , h m g (6) The absorption ratio (AR) shall be calculated : 100 um tm I I AR in percentage (

48、7) where I tm is the mean rate of weight gain of the three treated test cubes ; and I um is the mean rate of weight gain of the untreated test cubes. Immediately after the immersion test, the three treated test cubes shall be placed in individual beakers containing sufficient potassium hydroxide sol

49、ution (5,6 g/l) (5.14) to fully cover a test cube supported on a spacer with a head of (25 5) mm. The beakers are securely covered with cling film (5.15) and left for (21 0,1) days. The test cubes shall be removed from the beakers and dried, suitably supported on a bench to allow air to circulate around each of the 6 faces in the laboratory, until their weight is within 2 g of th