SIST EN 1771:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.ãþHQLPVWROSFHPProdukte und Systeme für den Schutz und die Instandsetzung von Betontragwerken - Prüfverfahren - Bestimmung der Injektionsfähigkeit und Prüfung der SpaltzugfestigkeitProduits et systemes pour la protection et la réparation des structures en béton - Méthodes d'essai - Détermination de l'injectabilité et essai de fendageProducts and systems for the protection and repair of concrete structures - Test methods - Determination of injectability and splitting test91.080.40Betonske konstrukcijeConcrete structuresICS:Ta slovenski standard je istoveten z:EN 1771:2004SIST EN 1771:2004en01-december-2004SIST EN 1771:2004SLOVENSKI
STANDARD



SIST EN 1771:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1771August 2004ICS 91.080.40English versionProducts and systems for the protection and repair of concretestructures - Test methods - Determination of injectability usingthe sand column testProduits et systèmes pour la protection et la réparation desstructures en béton - Méthodes d'essai - Détermination del'injectabilité et essai de fendageProdukte und Systeme für den Schutz und dieInstandsetzung von Betontragwerken - Prüfverfahren -Bestimmung der Injektionsfähigkeit und Prüfung derSpaltzugfestigkeitThis European Standard was approved by CEN on 27 February 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1771:2004: ESIST EN 1771:2004



EN 1771:2004 (E)
2 Contents page Foreword.3 1 Scope.4 2 Normative references.4 3 Test principle.4 4 General requirements for testing.4 4.1 Apparatus.4 4.2 Other equipment.4 4.3 Sand.5 5 Preparation of the test.8 5.1 Injectability test.8 5.2 Preparation of specimen for splitting test (Brazilian test).8 6 Test procedure.9 6.1 Column test.9 6.2 Splitting test.10 7 Expression of the results.10 7.1 Column test.10 7.2 Splitting test.11 8 Test report.11 Bibliography.13
SIST EN 1771:2004



EN 1771:2004 (E) 3 Foreword This document (EN 1771:2004) has been prepared by Technical Committee CEN /TC 104, "Concrete and related products", the secretariat of which is held by DIN. It has been prepared by Sub-committee 8 "Products and systems for the protection and repair of concrete structures" (Secretariat 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 2005, and conflicting national standards shall be withdrawn at the latest by February 2005. It is generally recognised that it is difficult to generate cracks of a controlled width in concrete and difficult to make objective measurements of the ease with which such cracks may be injected with various materials. This test, developed at the LCPC 1) and by RILEM 2), circumvents these difficulties by measuring the rate of flow of the injection agent through a column of graded sand. The sand grading specified is carefully chosen to have interconnecting voids providing a tortuous path for a flow of the injection agent. These having a similar resistance to flow to that provided by a 0,2 mm crack in concrete (other gradings of sand could be chosen to simulate the flow in wider cracks, if desired). The detailed method of injection uses a fixed quantity of mixed reactive injection agent in a vessel maintained at a closely controlled pressure, to provide the injection force. Thus, any limitations on the practical usage of the grout imposed by thickening/gelation of the mixed product in the injection vessel will be recorded. The method could be modified to permit the assessment of grouts dispensed and injected by twin-pump metering and mixing machines, provided the same fine degree of pressure control can be exercised. As a supplement to the injectability test, the column of grouted sand, when fully cured, is sawn into cylinders which are then subjected to indirect tensile strength measurement (Brazilian splitting test). This can provide a useful comparison between materials, giving some indication of the strength of bond achievable. This document includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
1) Laboratoire Central des Ponts et Chaussées. 2) Réunion Internationale de Laboratoires d'Essais et de recherches sur les Matériaux. SIST EN 1771:2004



EN 1771:2004 (E)
4 1 Scope This document specifies a method for determining the injectability of a product in a capillary network and its adhesion to concrete by measurement of the splitting strength of cylindrical mortar samples resulting from a sand column injection.
2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1, Methods of testing cement - Part 1: Determination of strength. EN 196-3, Methods of testing cement - Part 3: Determination of setting time and soundness. EN ISO 9514, Paints and varnishes - Determination of the pot-life of liquid systems - Preparation and conditioning of samples and guidelines for testing (ISO 9514:1992). ISO 565, Test sieves – Metal wire cloth, perforated metal plate and electroformed sheet – Nominal sizes of openings. 3 Test principle The principle of the test consists on injecting, under a constant pressure, the product in a transparent plastic (polymethylmethacrylate) tube filled with graded sand and kept in a vertical position. The column is injected from its lower end; one measures the time taken by the product to attain the different reference marks drawn along the tube. 4 General requirements for testing 4.1 Apparatus The apparatus used is illustrated in Figure 1. The total length of the rising tube, the joining flexible tube and the connecting branches is (900 ± 5) mm; the inner diameter is (6 ± 0,1) mm. The difference in level between the bottom of the column and the bottom of the injection pot is (400 ± 5) mm in length. The distance between the end of the rising tube and the bottom of the metal container is (20 ± 1) mm. The tube end is cut square. The injection column is fitted with rubber plugs perforated in their centre. The lower plug has passing through it a copper tube, 6 mm internal diameter - 8 mm external diameter, and (50 ± 10) mm in length to which the flexible pipe is fitted. 4.2 Other equipment In addition to the above mentioned device, the following equipment is necessary to carry out the test:  transparent tubes not affected by the products involved (e.g. polymethylmethacrylate) (22,2 ± 0,3) mm in inner diameter and 390 mm in length;  a scale 400 mm long graduated in millimetres; SIST EN 1771:2004



EN 1771:2004 (E) 5  a balance accurate to within 0,1 g;  a stopwatch reading to 1/10 s;  a thermometer graduated from 0 °C to 200 °C and ac
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