EN 1015-11-1999 en Methods of Test for Mortar for Masonry - Part 11 Determination of Flexural and Compressive Strength of Hardened Mortar (Incorporates Amendment A1 2006)《圬工灰浆试验方法 .pdf

1、BRITISH STANDARD BS EN 1015-11:1999 Incorporating amendment no. 1 Methods of test for mortar for masonry Part 11: Dermination of flexural and compressive strength of hardened mortar The European Standard EN 1015-11:2000, incorporating amendment A1:2006, has the status of a British Standard ICS 91.10

2、0.10 BS EN 1015-11:1999 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 2007 ISBN 0 580 35469 5 National foreword Thi

3、s British Standard was published by BSI. It is the UK implementation of EN 1015-11:1999, incorporating amendment A1:2006. It is included in a package of standards relating to ties, tension straps, hangers, brackets, bed joint reinforcement, masonry mortar and rendering and plastering mortar which su

4、persedes the following British Standards which are withdrawn: BS 4551-1:1998, Methods of testing mortars, screeds and plasters Part 1: Physical testing; BS 4721:1981, Specification for ready-mixed building mortars; BS 5838-2:1980, Specification for dry packaged cementitious mixes Part 2: Prepacked m

5、ortar mixes. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its preparation was e

6、ntrusted to Technical Committee B/519, Masonry and associated testing, to Subcommittee B/519/2, Mortar. A list of organizations represented on this subcommittee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users

7、 are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Comments 16880 31 January 2007 See national foreword.CEN European Committee for Standardization Comite Europe en de Normal

8、isation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1015-11:1999 E EUROPEAN STANDARD NORME EUROPE ENNE EUROPA ISCHE NORM ICS 91.10

9、0.10 English version Methods of test for mortar for masonry Part 11: Determination of flexural and compressive strength of hardened mortar Me thodes dessai des mortiers pour mac onnerie De termination de la re sistance a la flexion et a l a compression du mortier durci Pru fverfahren fu rM o rtel fu

10、 r Mauerwerk Teil 11: Bestimmung der Biegezug- und Druckfestigkeit von Festmo rtel This European Standard was approved by CEN on 8 July 1999. 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 nat

11、ional 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. This European Standard exists in three official versions (English, French, German). A version in a

12、ny 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 the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germ

13、any, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. + A1 December 2006 EN 1015-11 August 1999 Page 2 EN 1015-11:1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 125 Masonry, the Secretaria

14、t of which is held by BSI. 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 2000, and conflicting national standards shall be withdrawn at the latest by December 2001. According to the CEN

15、/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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden

16、, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Principle 3 4 Definitions and symbols 3 5 Apparatus 3 6 Sampling 4 7 Preparation and storage of test specimens 4 8 Determination of flexural strength 5 9 Determination of compressive strength 6 10 Tes

17、t report 6 Annex A (normative) Description of metal moulds for specimen preparation 7 Foreword to amendment A1 This document (EN 1015-11:1999/A1:2006) 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 10

18、15-11:1999 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2007, and conflicting national standards shall be withdrawn at the latest by June 2007. According to the CEN/CENELEC Internal Regulations, the national sta

19、ndards 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,

20、Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Annex B (informative) Suggested loading rates for different classes of masonry and rendering mortars 9 BSI 2007Page 3 EN 1015-11:1999 1) An English translation of a term used in most European countries. 1 Scope This European

21、 Standard specifies a method for determining the flexural and compressive strength of moulded mortar specimens. 2 Normative references Part 1: Rendering and plastering mortar with inorganic binding agents. Part 2: Masonry mortar. EN 1015-2, Methods of test for mortar for masonry Part 2: Bulk samplin

22、g of mortars and preparation of test mortars. EN 1015-3, Methods of test for mortar for masonry Part 3: Determination of consistence of fresh mortar (by flow table). ISO 468, Surface roughness Parameters, their values and general rules for specifying requirements. EN ISO 6507-1, Metallic materials V

23、ickers hardness test Part 1: Test method. 3 Principle The flexural strength of mortar is determined by three point loading of hardened moulded mortar prism specimens to failure. The compressive strength of the mortar is determined on the two parts resulting from the flexural strength test. Where the

24、 flexural strength is not required, the parts for compressive strength testing can be produced from the prisms in any way which does not lead to these parts being damaged. 4 Definitions and symbols 4.1 Definitions air-lime 1) limes mainly consisting of calcium oxide or hydroxide which slowly harden

25、in air by reacting with atmospheric carbon dioxide. Generally they do not harden under water as they have no hydraulic properties 4.2 Symbols F is the maximum load applied to the specimen, in Newtons (N). l is the distance between the axes of the support rollers, in millimetres (mm). b is the width

26、of specimen in millimetres (mm). d is the depth of the specimen in millimetres (mm). 5 Apparatus 5.1 Metal moulds, consisting of an open frame of removable walls forming three compartments when assembled (see Figure 1 for typical design and annex A for a detailed description). 5.2 A tamper, consisti

27、ng of a rigid, non-absorptive rod of square cross-section, each side of which is 12 mm 1 mm. The tamping face is flat and at right angles to the length of the tamper. The mass of the tamper is 50 g 1g . 5.3 Storage chambers, capable of maintaining a temperature of 208C 28C and a relative humidity of

28、 95 % 5%o r6 5% 5% . 5.4 A clamp, enabling the assembled mould frame to be kept together at right angles. 5.5 White cotton gauze, four sheets each with a size of approximately 150 mm3 175 mm. 5.6 Absorbent filter paper, with a specific mass of 200 g/m 2 20 g/m 2 and water absorption capacity of 160

29、g/m 2 20 g/m 2 ; twelve sheets each with a size of approximately 150 mm 175 mm. 5.7 Polyethylene bags, capable of containing the steel moulds. 5.8 Two glass plates, of sufficient area to cover the steel mould. 5.9 A palette knife. 5.10 A grid, with webs of triangular section providing point contact

30、support for storing and curing the specimens. 5.11 A trowel. Additional apparatus are described in 8.1 and 9.1. ! “ 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 edit

31、ion of the referenced document (including any amendments) applies. EN 998-1 , Specification for mortar for masonry ! “EN 998-2 , Specification for mortar for masonry ! “ BSI 2007Page 4 EN 1015-11:1999 6 Sampling The fresh mortar for this test shall have a minimum volume of 1,5 1 or at least 1,5 time

32、s the quantity needed to perform the test, whichever is the greater, and shall be obtained either by reduction of the bulk test sample (see EN 1015-2) using a sample divider or by quartering, or by preparation from dry constituents and water in the laboratory. The flow value of the mortar in the bul

33、k test sample shall be determined in accordance with EN 1015-3 and reported. Laboratory mixed samples shall before testing be brought to a defined flow value as specified in EN 1015-2. Ready to use mortars (factory-made wet mortars which are retarded), and pre-batched air-lime/sand wet mortars when

34、not gauged with hydraulic binders, shall be tested within their specified workable life. The length of mixing period shall be measured from the moment all constituents are introduced into the mixer. Before testing, the batch shall be gently stirred by hand using a trowel or palette knife in 5 s to 1

35、0 s to counteract any false setting etc., but without any additional mixing of the batch. Any deviation from the mixing procedure shall be noted. 7 Preparation and storage of test specimens 7.1 General The test specimens shall be prisms 160 mm3 40 mm3 40 mm. Three specimens shall be provided. For th

36、e compressive strength test, break the prisms into two halves to provide six half prisms. 7.2 Preparation 7.2.1 General Prepare mortars based on hydraulic binders (retarded or not retarded), and air-lime/cement mortars with mass of air-lime not exceeding 50 % of the total binder mass, in accordance

37、with 7.2.2. Prepare mortars based on air-lime, and air-lime/cement mortars with cement mass not exceeding 50 % of the total binder mass, in accordance with 7.2.3. Preparation and storage conditions are given in Table 1. Prepare three specimens for testing at an age of 28 days, or more if retarding a

38、gents are incorporated in the mortar, unless otherwise specified. Clean the moulds and lubricate the internal faces of the assembled moulds with a thin layer of mineral oil to prevent adhesion of the mortar. 7.2.2 Mortars with hydraulic binders, and air-lime/cement mortars with mass of air-lime not

39、exceeding 50 % of the total binder mass Fill the mould with mortar in two approximately equal layers, each layer being compacted by 25 strokes of the tamper. Skim off the excess mortar with a palette knife, leaving the mortar surface plane and level with the top of the mould. Then store the mould as

40、 described in 7.3. 7.2.3 Mortars based on air-lime, and air-lime/cement mortars with cement mass not exceeding 50 % of the total binder mass Place the assembled mould frame, clamped together at right angles, on a glass plate on which two layers of dry white cotton gauze have been placed. Fill the mo

41、uld with mortar in two approximately equal layers, each layer being compacted by 25 strokes of the tamper. Skim off the excess mortar with a palette knife leaving the mortar surface plane and level with the top of the mould. Place two layers of white cotton gauze tightly on the mortar surface. Place

42、 six layers of absorbent filter paper on top of the gauze. Cover the absorbent filter paper with a glass plate and turn the mould upside down keeping the glass plates at the bottom and top firmly attached to the mould. Carefully remove the glass plate from the top of the inverted mould, place six la

43、yers of absorbent filter paper on the exposed gauze and re-cover with the glass plate on top. Re-invert the mould back to its upright position and place it on a fixed table and load with mass of approximately 5 kg. After 3 h remove the load and the glass plate. Discard the absorbent filter paper and

44、 the gauze on top of the mould, and re-cover with the glass plate on top. Invert the mould, keeping the glass plates at the bottom and the top firmly attached to the mould. Remove the glass plate from the top of the inverted mould and discard the absorbent filter paper and the gauze. Then store the

45、mould as described in 7.3. 7.3 Storage and curing conditions Place the mould in a humidity chamber or in sealed polyethylene bags. Then after the period given in Table 1 remove the specimens from the mould and subsequently store them on the grid with triangular section webs under the conditions also

46、 described in Table 1. BSI 2007Page 5 EN 1015-11:1999 Table 1 Preparation and conditions of storing specimens Type of mortar Preparation Storage time at a temperature of 208C 28C in days Relative humidity 95 % 5 % or in polyethylene bag 65 % 5% in the mould with the mould removed with the mould remo

47、ved Air-lime mortars 7.2.3 522 1 Air-lime/cement mortars with cement mass not exceeding 50 % of the total binder mass 7.2.3 522 1 Cement and air-lime/cement mortars with mass of air-lime not exceeding 50 % of the total binder mass 7.2.2 252 1 Mortars with other hydraulic binders 7.2.2 252 1 Retarded

48、 mortars 7.2.2 522 1 8 Determination of flexural strength 8.1 Apparatus A testing machine, capable of applying the load at a rate specified in 8.2. The machine shall comply with the requirements in Table 2. The machine shall have two steel supporting rollers of length between 45 mm and 50 mm and 10

49、mm 0,5 mm diameter, spaced 100,0 mm 0,5 mm apart, and a third steel roller of the Dimensions in millimetres Key 1 Loadsame length and diameter located centrally between the support rollers (see Figure 1 ). The three vertical planes through the axes of the three rollers shall be parallel and remain parallel, equidistant normal to the direction of the prism under test. One of the supporting rollers an