混凝土 - 劈裂试验

前言

本标准（EN 1999-1-2:2007）由技术委员会 CEN/TC250《混凝土》制定，技术委员会秘书处由法国标准化协会（DIN）组建。

本标准具备国家标准的效力，必须最迟于 2002 年 1 月前颁布内容一致的文本，或经过法律认可，所有与之相悖的国家标准应最迟于 2002 年 1 月废除。

本标准替了 EN934 -6:2000。

本标准属于 EN 934 系列标准的一部分，《混凝土、沙浆、灰浆用添加剂》同样是由以下几个部分组成：

• 第 2 部分：混凝土用添加剂— 定义、要求、合格性、做标记和贴标签
• 第 3 部分：用于配制砂浆的添加剂—定义、要求、合格性
• 第 4 部分：预应力钢索所用灰浆的添加剂—定义、要求、合格性、做标记和贴标签
• 第 5 部分：喷射混凝土用添加剂—定义、规范和合格性标准

附件 A 为资料性附件。

根据 CEN/CENELEC 内部章程，以下国家的标准化协会必须采用本欧洲标准：德国，奥地利，比利时，保加利亚，塞浦路斯，丹麦，西班牙，爱沙尼亚，芬兰，法国，希腊，匈牙利，爱尔兰，冰岛，意大利，拉脱维亚，立陶宛，卢森堡，马耳他，挪威，荷兰，波兰，葡萄牙，捷克共和国，罗马尼亚，英国，斯洛伐克，斯洛文尼亚，瑞典及瑞士。

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En ce qui concerne la terminologie générale, le lecteur se reportera à la Publication 50 de la CEI : Vocabulaire Electrotechnique International (VEI), qui est établie sous forme de chapitres séparés traitant chacun d'un sujet défini, l'Index général étant publié séparément. Des détails complets sur le VEI peuvent être obtenus sur demande.

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• la Publication 27 de la CEI : Symboles littéraux à utiliser en électrotechnique ;
• la Publication 617 de la CEI : Symboles graphiques pour schémas.

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Terminology

For general terminology, readers are referred to IEC Publication 50 : International Electrotechnical Vocabulary (IEV), which is issued in the form of separate chapters each dealing with a specific field, the General Index being published as a separate booklet. Full details of the IEV will be supplied on request.

The terms and definitions contained in the present publication have either been taken from the IEV or have been specifically approved for the purpose of this publication.

Graphical and letter symbols

For graphical symbols, and letter symbols and signs approved by the IEC for general use, readers are referred to :

• IEC Publication 27 : Letter symbols to be used in electrical technology ;
• IEC Publication 617 : Graphical symbols for diagrams.

The symbols and signs contained in the present publication have either been taken from IEC Publications 27 or 617, or have been specifically approved for the purpose of this publication.

IEC publications prepared by the same Technical Committee

The attention of readers is drawn to the inside of the back cover, which lists IEC publications issued by the Technical Committee which has prepared the present publication.

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SOMMAIRE

TABLE DES MATIÈRES

:current

Foreword

This document (EN 10216-3:2002) has been prepared by Technical Committee EC/TC 29, "Steel tubes and fittings for steel tubes", the secretariat of which is held by UNI.

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 November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.

Other Parts of EN 10216 are:

Another European Standard series covering tubes for pressure purposes is:

According to the CEN/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, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

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ISO 657-1 : 1988 (E)

Table 1 — Dimensions and sectional properties of hot-rolled equal-leg angles (concluded)

NOTES

1. Member countries may choose, to be included in their national standards, the sizes which are required to meet their demand.
2. For the angles so chosen, only thicknesses which can be rolled in their mills to meet the demand of the users may be selected from the list of thicknesses corresponding to equal angles in table 1.
3. The sectional area has been calculated using the formula

   S = [l/2 A - l) + 0,214 6 (r_root² - 2r_toe²)] × 1/100

   where
   

   S is the sectional area, in square centimetres;
   

   l is the thickness, in millimetres;
   

   r_root is the root radius, in millimetres;
   

   r_toe is the toe radius, in millimetres;
   

   A is the leg length, in millimetres.

4. Mass is calculated on the basis of density of steel of 7,85 kg/dm³.

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