1、Precast concrete products Part 1 : Measuring the consistency of the matrix by the Slump test method English version of DIN EN 11 70-1 Test method for glass fibre reinforced cement Descriptors: Glass fibre reinforced cement, consistency, slump test. DIN - EN 1170-1 Vorgefertigte Betonerzeugnisse - Pr
2、fverfahren fr Glasfaserbeton - Teil 1 : Bestimmung der Konsistenz der Matrix - Setzversuch European Standard EN 11 70-1 : 1997 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 229. The responsible German body involve
3、d in its preparation was the Normenausschu Bauwesen (Building and Civil Engineering Standards Committee), Technical Committees Betonferfigteile and Prfverfahren fr Beton. EN comprises 4 pages. No pari of this standard may be reproduced without the prior permission of V Deutsches Institut fr Normung
4、e. V., Berlin. buth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). Ref. No. DIN EN 1170-1 : 1998-0 English price group 04 Sales No. 1104 06.98 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1170-1 November 1997 ICs 91.1 00.30 Descriptors: Glass
5、fibre reinforced cement, consistency, slump test. English version Precast concrete products Part 1 : Measuring the consistency of the matrix Slump test method Test method for glass fibre reinforced cement Produits prfabriqus en bton - Mthode dessai des composites ciment-verre - Partie 1 : Mesure de
6、la consistance de la matrice - Mthode dite Par talement Vorgefertigte Betonerzeugnisse - Prfverfahren fr Glasfaserbeton - Teil 1 : Bestimmung der Konsistenz der Matrix - Setzversuch This European Standard was approved by CEN on 1997-1 0-29. CEN members are bound to comply with the CENKENELEC Interna
7、l 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 obtained on application to the Central Secretariat or to any CEN member.
8、The European Standards exist 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 Central Secretariat has the same status as the official versions. CEN members are
9、the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de No
10、rmalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1997. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1170-1 : 1997 E Page 2 EN 11 70-1 : 1997 Contents Foreword . 2 1 Scope .
11、. . . . . 3 2 Normative references . 3 3 Definition and abbreviation . . . 3 3.1 Definition 3 3.2 Abbreviation ._. 3 4 Apparatus . . . . 3 5 Procedure 4 6 Interpreting the result . . . . . 4 Foreword This European Standard has been prepared by Technical Committee CENTTC 229 “Precast concrete product
12、s“, 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 May 1998, and conflicting national standards shall be withdrawn at the latest by May 1998. According
13、to the CENKENELEC 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, Netherlands, Norway, Portugal, Spai
14、n, Sweden, Switzerland and the United Kingdom. Page 3 EN 11 70-1 : 1997 Number of circle Diameterof circle (mm) 1 Scope O 1 2 3 4 5 6 7 8 65 85 105 125 145 165 185 205 225 This European Standard specifies a method of test making it possible to check the workability of the mixture and the conformity
15、of the waterkement ratio (suitability for pumping and compaction) in glass fibre reinforced cement. 2 Normative 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
16、 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 edition of the publication referred to applies
17、. EN 11 70-2 Precast concrete products - Test method for glass fibre reinforced cement - Part 2: Measuring the fibre content in fresh GRC - “Wash out test” method 3 Definition and abbreviation 3.1 Definition For the purposes of this standard the following definition applies : matrix: Composition of
18、the glass fibre reinforced cement without the fibres. It is made up of the mixture of sand, cement, water and any admixtures and additives. 3.2 Abbreviation GRC : Glass fibre reinforced cement. 4 Apparatus The apparatus comprises : - a plastic or metallic tube with a smooth internal surface, (55 IO$
19、) mm high with an internal diameter of (57 f 0,5) mm and an external diameter of not less than 65 mm ; - a flat plate of smooth, easily-cleaned material approximately (300 x 300) mm on which are engraved, with a tolerance of I0,5 mm, nine numbered concentric circles, the diameters of which are given
20、 in table 1 ; - a trowel. Table 1 : Diameters and numbering of the circles Page 4 EN 11 70-1 : 1997 5 Procedure Put the plate on a horizontal support. Wipe the plate and the inside of the tube with a damp cloth. Put the tube on the plate, centering it in the engraved circle no. O. Take about 200 cm
21、of the matrix ready to be used (for example from the pump hopper in case of 3 spray). Fill the tube with matrix wait a few seconds for the air bubbles to escape, and level the surface with the trowel. Lift the tube slowly and vertically. The matrix will spread out onto the plate. Wait approximately
22、30 s and read the number of the circle reached by the spreading matrix. If necessary, round the result to the nearest circle. Record the result in the test record book (an example of a record sheet is given in EN 1170-2). Clean and dry the apparatus. 6 interpreting the result The optimum value is de
23、termined according to the method of manufacture and type of product to be produced. It is defined during the establishment of the mix design. If the result obtained does not comply with the optimum value defined, carry out a second test to validate the result before modifying the composition (e.9. change the water quantity).
