SIST EN 1052-3:2004/A1:2007

Methods of test for masonry - Part 3: Determination of initial shear strength

To introduce an optional method for testing at zero pre-compression.

Prüfverfahren für Mauerwerk - Teil 3: Bestimmung der Anfangsscherfestigkeit (Haftscherfestigkeit)

Méthodes d'essai de la maçonnerie - Partie 3: Détermination de la résistance initiale au cisaillement

Metode preskušanja zidovine - 3. del: Določevanje začetne strižne trdnosti - Dopolnilo A1

General Information

• Status: Published
• Publication Date: 02-Jul-2007
• ICS: 91.080.30 - Masonry
• Technical Committee: CAA - Mineral binders and masonry
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Jun-2007
• Due Date: 09-Aug-2007
• Completion Date: 03-Jul-2007
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/116 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on masonry and related products
• Ref Project: EN 1052-3:2002/A1:2007 - Methods of test for masonry - Part 3: Determination of initial shear strength

Relations

• Amends: SIST EN 1052-3:2004 - Methods of test for masonry - Part 3: Determination of initial shear strength
• Effective Date: 01-Jul-2007

Overview

EN 1052-3:2002/A1:2007 (amendment to EN 1052-3:2002) is a CEN document that specifies laboratory test methods for determining the initial shear strength of masonry. The amendment introduces an optional zero pre-compression test route and clarifies specimen preparation, loading, measurement and evaluation procedures. It is intended for use by test laboratories, designers, manufacturers and conformity assessment bodies working with masonry materials.

Key topics and technical requirements

• Two procedures defined
  • Procedure A: Tests specimens at different pre-compression levels. The initial shear strength is determined by linear regression to zero pre-compression.
  • Procedure B: Tests specimens at zero pre-compression (optional method). At least six specimens are required and a characteristic value is obtained by either a simple or a statistical method.
• Specimen preparation and dimensions
  • Types A and B specimens are defined (see Table 2 in the standard). Where cutting of units is necessary, faces intended for mortaring must be representative of the unit.
  • Loading geometry adjustment (e.g., eccentricity e = 15 mm) and other dimensional clarifications are included in the amendment.
• Loading and measurements
  • Loading rates and the number of replications are specified; additional specimens may be tested until required failure types are achieved.
  • Record precompression load where relevant, maximum shear force and failure mechanism for each specimen.
• Evaluation methods for Procedure B
  • Simple method: Characteristic shear strength f_k = 0.8 × f_mean or the lowest individual result, whichever is lower.
  • Statistical method: Log-transform individual shear strengths, compute mean and standard deviation, adjust with factor K (table provided for n = 6…20), and back-transform to obtain f_k at a 95% confidence level. K values (examples): n=6 → 2.18, n=7 → 2.08, n=8 → 2.01, up to n=20 → 1.77.
• Reporting requirements
  • Test date, whether Procedure A or B was used, results (to 0.01 N/mm2), mechanisms, and indication of any lower-bound results.

Applications

• Establishing bond/shear properties of masonry assemblies for structural design and verification.
• Material qualification and quality control of units, mortars and masonry workmanship.
• Input data for structural analysis, failure investigations, and product declarations.
• Comparative testing for research and development of masonry systems.

Who uses this standard

• Accredited test laboratories and construction materials testing facilities
• Structural engineers and masonry designers
• Manufacturers of masonry units and mortars
• Certification bodies and national standards organizations (CEN/TC 125 stakeholders)

Related standards

• EN 1052 series (other parts covering strength and test methods for masonry)
• National test standards referenced by CEN members

Keywords: EN 1052-3:2002/A1:2007, masonry test, initial shear strength, zero pre-compression, Procedure A, Procedure B, shear test specimens, CEN.

Standards Content (Sample)

SLOVENSKI SIST EN 1052-
3:2004/oprA1:2005
PREDSTANDARD
februar 2005
Metode preskušanja zidovine - 3. del: Določevanje začetne strižne trdnosti
Methods of test for masonry - Part 3: Determination of initial shear strength
ICS 91.080.30 Referenčna številka
SIST EN 1052-3:2004/oprA1:2005(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD
DRAFT
EN 1052-3:2002
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
December 2004
ICS
English version
Methods of test for masonry - Part 3: Determination of initial
shear strength
Méthodes d'essai de la maçonnerie - Partie 3: Prüfverfahren für Mauerwerk - Teil 3: Bestimmung der
Détermination de la résistance initiale au cisaillement Anfangsscherfestigkeit (Haftscherfestigkeit)
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 125.
This draft amendment A1, if approved, will modify the European Standard EN 1052-3:2002. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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 Centre has the same status
as the official versions.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1052-3:2002/prA1:2004: E
worldwide for CEN national Members.

EN 1052-3:2002/prA1:2004 (E)
Contents Page
Foreword.3
1 Modification in 3 Principle.4
2 Modification in 7.1 Preparation of masonry specimens.4
3 Modification in Table 2 Dimensions and type of shear test specimens.4
4 Modification in Figure 2 Loading of shear test specimen .4
5 Modification in 8.2 Loading.4
6 Modification in 8.3 Measurements and observations .5
7 Modification in 8.4 Replications.5
8 Modification in 9 Calculations .5
9 Modification in 10 Evaluation of results .5
10 Modification in 11 Test report.7

EN 1052-3:2002/prA1:2004 (E)
Foreword
This document (EN 1052-3:2002/prA1:2004) has been prepared by Technical Committee CEN/TC
125 "Masonry", the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.

EN 1052-3:2002/prA1:2004 (E)
1 Modification in 3 Principle
In the first paragraph delete "with precompression perpendicular to the bed joints".
In the second paragraph delete "The initial shear strength is defined by the linear regression curve to
zero normal stress."
Add a new final paragraph as follows:
"Two procedures, A and B are included. Procedure A involves testing specimens at different
precompressions and the initial shear strength is defined by a linear regression curve to zero
prestress. Procedure B involves testing specimens at zero precompression and determining a
characteristic initial shear strength from
...

SLOVENSKI STANDARD
01-julij-2007
0HWRGHSUHVNXãDQMD]LGRYLQHGHO'RORþHYDQMH]DþHWQHVWULåQHWUGQRVWL
'RSROQLOR$
Methods of test for masonry - Part 3: Determination of initial shear strength
Prüfverfahren für Mauerwerk - Teil 3: Bestimmung der Anfangsscherfestigkeit
(Haftscherfestigkeit)
Méthodes d'essai de la maçonnerie - Partie 3: Détermination de la résistance initiale au
cisaillement
Ta slovenski standard je istoveten z: EN 1052-3:2002/A1:2007
ICS:
91.080.30 Zidane konstrukcije Masonry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1052-3:2002/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2007
ICS 91.080.30
English Version
Methods of test for masonry - Part 3: Determination of initial
shear strength
Méthodes d'essai de la maçonnerie - Partie 3: Prüfverfahren für Mauerwerk - Teil 3: Bestimmung der
Détermination de la résistance initiale au cisaillement Anfangsscherfestigkeit (Haftscherfestigkeit)
This amendment A1 modifies the European Standard EN 1052-3:2002; it was approved by CEN on 3 February 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This amendment 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 CEN Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1052-3:2002/A1:2007: E
worldwide for CEN national Members.

Contents
Page
1 Modification in 3 Principle.4
2 Modification in 7.1 Preparation of masonry specimens.4
3 Modification in Table 2 Dimensions and type of shear test specimens.4
4 Modification in Figure 2 - Loading of shear test specimen .5
5 Modification in Figure 3 - Precompression load.5
6 Modification in 8.2 Loading.5
7 Modification in 8.3 Measurements and observations .6
8 Modification in 8.4 Replications.6
9 Modification in 9 Calculations .6
10 Modification in 10 Evaluation of results .6
11 Modification in 11 Test report.8

Foreword
This document (EN 1052-3:2002/A1:2007) has been prepared by Technical Committee CEN/TC 125
“Masonry”, the secretariat of which is held by BSI.
This Amendment to the European Standard EN 1052-3:2002 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by September 2007,
and conflicting national standards shall be withdrawn at the latest by September 2007.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
1 Modification in 3 Principle
In the first paragraph delete ", with precompression perpendicular to the bed joints".
In the second paragraph delete "The initial shear strength is defined by the linear regression curve to
zero normal stress."
Add a new final paragraph as follows:
"Two procedures, A and B are included. Procedure A involves testing specimens at different
precompressions and the initial shear strength is defined by a linear regression curve to zero
prestress. Procedure B involves testing specimens at zero precompression and determini
...