1、BRITISH STANDARD BS EN 13579:2002 Products and systems for the protection and repair of concrete structures Test methods Drying test for hydrophobic impregnation The European Standard EN 13579:2002 has the status of a British Standard ICS 91.080.40; 91.100.99 BS EN 13579:2002 This British Standard,
2、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 40399 8 National foreword This British Standard
3、is the official English language version of EN 13579:2002. 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 represented on this
4、 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 Correspondence Index”, or by usi
5、ng 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 itself confer immunity f
6、rom 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 promulgate them in th
7、e 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 publication Amd. No. Da
8、te CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13579 August 2002 ICS 91.080.40; 91.100.99 English version Products and systems for the protection and repair of concrete structures - Test methods - Drying test for hydrophobic impregnation Produits et systmes pour la protection et la
9、rparation des structures en bton - Mthodes dessai - Essai de schage pour limprgnation hydrofuge Produkte und Systeme fr den Schutz und die Instandsetzung von Betontragwerken - Prfverfahren - Trocknungsprfung fr hydrophobierende Imprgnierungen This European Standard was approved by CEN on 23 December
10、 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-date lists and bibliographical references concerning such national standards may be obtain
11、ed 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 responsibility of a CEN member into its own language and notified to the Management Centr
12、e 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, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EURO
13、PEAN 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 means reserved worldwide for CEN national Members. Ref. No. EN 13579:2002 EEN 13579:2002
14、(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 Annex B (informative).10EN 13579:2002 (E) 3 Foreword This document (EN 13579:2002) has b
15、een 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 repair of concrete structures”, the secretariat of which is held by AFNOR. This European S
16、tandard 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 latest by February 2003. The Annexes A and B are informative. According to the CEN/CENE
17、LEC 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, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Swed
18、en, Switzerland and the United Kingdom.EN 13579:2002 (E) 4 1 Scope This European Standard specifies a test method to evaluate the effect of hydrophobic impregnation on the drying rate coefficient of impregnated specimens. The method primarily relates to the protection of concrete structures. 2 Norma
19、tive references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of
20、any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 1766, Products and systems for the protection and repair of concrete structures
21、 - Test methods - Reference concretes for testing. EN 13580, Products and systems for the protection and repair of concrete structures - Test methods - Water absorption and resistance to alkali for hydrophobic impregnations. 3 Symbols Symbol Explanation Unit C n Consumption of impregnant for each fa
22、ce of test cube during treatment g/m 2 C m Mean consumption of impregnant during treatment g/m 2 d 0 Weight of a test cube prior to placing in environmental cabinet g d 1 Weight of a test cube after initial conditioning in environmental cabinet g d 2 Weight of a test cube at end of drying test g DRC
23、 Drying Rate Coefficient % D t Drying rate of a treated test cube g/m 2 h D tm Mean drying rate of three treated test cubes g/m 2 h D u Drying rate of an untreated test cube g/m 2 h D um Mean drying rate of three untreated test cubes g/m 2 h M t Estimated moisture content of each test cube after con
24、ditioning % 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, calculated % W od Estimated weight of a test cube in oven dry condition g W od Weight of a test cube in oven dry condition g W ssd Weight of a test cub
25、e 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 13579:2002 (E) 5 4 Principle The principle of the test method described in this European Stand
26、ard is to compare the rate of drying of treated and untreated test cubes from the same batch of concrete. The ratio of the rates is defined as the drying rate coefficient. 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
27、 with an accuracy of 0,01 g. 5.5 Support 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)
28、 C. 5.8 Desiccator cabinet containing silica gel. 5.9 Fume cupboard. 5.10 One 150 mm diameter petri dish with 2 spacers glued to bottom of dish to support the test cubes during treatment. 5.11 Suitable environmental cabinet which maintains temperature at (30 2) C and relative humidity of (40 5) %. 5
29、.12 Two suitable air tight boxes containing saturated potassium sulphate solution for storing specimens. Note that treated and untreated test cubes shall be stored in separate boxes. 6 Preparation of test specimens Nine 100 mm concrete test cubes shall be cast from a single batch of Type C (0,45) co
30、ncrete 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 of the test cubes sha
31、ll 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 a bench in the labor
32、atory (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 dried in an oven at (105 5) C (5.7) for 7 days, cooled in a desiccator cabinet containing silica gel (5.8) and reweighed (W od ). The saturated surfa
33、ce dry moisture content (M ssd ) of the 3 oven dry test cubes (No. 7 - 9), shall be calculated using the following formula : 100 od od ssd ssd W W W M in % by weight (1) The estimated oven dry weight (W od ) of each of the remaining 6 test cubes (No. 1 - 6) shall be calculated using the formula :EN
34、13579:2002 (E) 6 100 1 Mm + Wssd od W in g (2) where M min % by weight is the mean saturated surface dry moisture content of the 3 oven dry test cubes (No. 7 - 9). The estimated moisture content (M t ) of each of the test cubes after conditioning shall be calculated from the weight, W t : 00 1 od od
35、 t t W W W M in % 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 treated in a fume cupboard (5.9) with the f
36、an on immediately after conditioning. Each cube shall be treated by dipping each face in the impregnant. 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 (5.10). One side of the cube, supporte
37、d on the 2 mm plastic spacers, shall be dipped in the material for (120 5) s and then removed. 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
38、for first side of the other two cubes. The consumption (C n ) of the material for each face of the cube shall be calculated as follows : 01 0 1 2 , t t n W W C in grams by square meters (4) The above procedure shall be repeated on the remaining six faces of each of the cubes and the average consumpt
39、ion for each cube shall be calculated. The mean consumption (C m ) for the three test cubes shall be 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 car
40、ried out in accordance with the manufacturers instructions. The cubes shall be stored, suitably supported to allow air to circulate around all 6 faces, in the fume cupboard for (48 1) h after the start of treatment with the fan off.EN 13579:2002 (E) 7 8 Test procedure 8.1 General The drying test sha
41、ll be carried out on 3 treated and 3 untreated test cubes prepared as in sections 6 and 7 above. The rate of drying of three treated and three untreated test cubes shall be determined by measuring their weight loss in an environmental cabinet. The treated and untreated test cubes must be tested at d
42、ifferent times to avoid cross contamination. The drying tests on the untreated test cubes shall be started immediately after the conditioning. The drying test on the treated test cubes shall be started 48 h after treatment. 8.2 Untreated test cubes The 3 untreated test cubes shall be weighed (d 0 )
43、and placed in a cabinet with a controlled environment of (30 2) C and (40 5) % R. H. (5.11) immediately after conditioning and reweighed (d 1 ) after (6,0 0,1) h. The drying test shall be continued for further (18,0 0,1) h. The test cubes shall again be weighed (d 2 ) and the drying rate (D u ) of e
44、ach test cube shall be calculated as : 06 0 18 2 1 , d d Du in h m g (5) NOTE In practice, d 0= W t . 8.3 Treated test cubes The 3 treated test cubes shall be weighed (48 1) h after the start of treatment (d 0 ) and then placed in the cabinet with a controlled environment of (30 2) C and (40 5) % R.
45、 H. The test cubes shall be reweighed after (24,0 0,1) h (d 1 ). This weight (d 1 ) shall be less than the weight (W t ) of the test cube after conditioning and immediately prior to treatment; if d 1 W tthen the test cubes shall be weighed after further periods in the cabinet until d 1 W t . The dry
46、ing test shall then continue for further (24,0 0,1) h. The test cubes shall then be reweighed (d 2 ) and the drying rate (D t ) of each test cube shall be calculated : 06 0 24 2 1 , d d Dt in h m g (6) The drying rate coefficient (DRC) shall be calculated as : 100 um tm D D DRC in % (7) where D tmis
47、 the mean drying rate of the three treated test cubes and D umis the mean drying rate of the untreated test cubes. If there is a requirement to determine the water absorption and alkali resistance of the impregnant as specified in prEN 13580, it is permitted to use the test cubes from the drying tes
48、t. In this case, the treated and untreated test cubes shall be stored in separate air tight boxes over a saturated solution of potassium (5.12) sulphate immediately after the end of the drying test until required for further testing.EN 13579:2002 (E) 8 9 Test report The test report shall contain at
49、least the following information : a) a reference to this European standard ; b) name and address of the test laboratory ; c) identification number and date of the test report ; d) name and address of the manufacturer or supplier of the product(s) ; e) name and identification marks or batch number of the product(s); f) date of supply of the product ; g) date of preparation of the te
