NF P18-417-中文
混凝土 - 通过回弹法使用硬度计测量表面硬度
NF P18-417-中文
Concrete - Measurement of surface hardness by rebound method using a hardness tester
标准信息
STANDARD INFORMATION- 标准编号
- NF P18-417-中文
- 所属分类
- NF 法国标准
- 发布机构
- AFNOR
- 版本年份
- 1989
- 文件语言
- 英语
- 文件格式
- 文件页数
- 6 页
- 文件大小
- 335.09 KB
中文名称为参考译名,文件语言以原文为准。
· 更新:
标准简介
OVERVIEW中文简介
本标准规定了在不破坏混凝土结构的前提下,使用回弹硬度计测定混凝土表面硬度指数的非破坏性试验方法。标准详细描述了试验原理、仪器要求(包括硬度计、磨石及校准块)、校准程序以及针对构造物和试样的具体操作方法。
English summary
This standard specifies a non-destructive test method for determining the surface hardness index of concrete using a rebound hardness tester without damaging the structure. It details the test principles, instrument requirements including hardness testers and calibration blocks, calibration procedures, and specific operating methods for structures and specimens.
以上为根据文件整理的内容简介。
相关标签
标准内容预览
DOCUMENT PREVIEW3.4.2.2 通过混凝土试样进行校准
当仪器存在缺陷(Ism <28 或>32)时,就必须比仪器进行清理,并再次测定 Ism(如同上述对校准块的测定)。
如果仪器的功能仍存在问题(Ism <28 或>32)时,不能使用,就必须进行检修,检修后应制定新的校准证明。
校准仪器时,用金属加固的氯丁橡胶块应放置在坚硬和平坦的基座上。
校准必须在 20°C±2°C 的环境温度下进行。
按照第 4.2 条中的规定,依据 15、25 和 35MPa 这三个等级的抗压强度,对三个混凝土试样的进行三个系列的测量。
按照第 4.2 条中的规定,测量硬度指数(Is)。
关于每种抗压强度等级,测定这三个硬度指数的中位数。
进行了抗压强度试验后,根据标准 NF P 18-406,测量硬度指数(Is),第 4.2 条中规定的等待时间除外。
如此获得的三组数值在附录 A 的图表中被标注。如果具有代表性的三点处于球面弓形内,则说明仪器的功能良好。
反之,则说明仪器运行存在缺陷。
3.4.3 校准的频率
3.4.3.1 通过用金属加固的氯丁橡胶块进行校准
必须定期审核硬度指数结果有没有出现偏差(通过对硬度计进行 50 系列的测量,每个系列的测量次数为 27 次),通常每月至少校准一次。
3.4.3.2 通过混凝土试样进行校准
校准至少应每两年进行一次,或者通过自动控制来完成,或者在国家试验网(R.N.E)授权的试验室里进行试验。
4 操作方法
4.1 对构造物进行测量
4.1.1 试验表面的选择和准备
a)选择
试验时,混凝土构件的移动、振动或重大变形会导致硬度计的指示出现错误。
应避免将砂砾巢、鳞片状剥落、构造粗糙、高孔隙率、骨架显露的区域作为试验表面。
b)准备
必须除去试验用混凝土表面的涂层或涂料。
出现水泥易碎表层(薄水泥浆)、异物颗粒及轻微不规则的表面时,应用第 3.2 条中叙述的磨石或其他装置进行磨光。
应擦干试验表面的水膜。
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Révision de la présente publication
Le contenu technique des publications de la CEI est constamment revu par la Commission afin d'assurer qu'il reflète bien l'état actuel de la technique.
Les renseignements relatifs à ce travail de révision, à l'établissement des éditions révisées et aux mises à jour peuvent être obtenus auprès des Comités nationaux de la CEI et en consultant les documents ci-dessous :
- Bulletin de la CEI
- Annuaire de la CEI
- Catalogue des publications de la CEI
Publié annuellement
Terminologie
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.
Les termes et définitions figurant dans la présente publication ont été soit repris du VEI, soit spécifiquement approuvés aux fins de cette publication.
Symboles graphiques et littéraux
Pour les symboles graphiques, symboles littéraux et signes d'usage général approuvés par la CEI, le lecteur consultera :
- la Publication 27 de la CEI : Symboles littéraux à utiliser en électrotechnique ;
- la Publication 617 de la CEI : Symboles graphiques pour schémas.
Les symboles et signes contenus dans la présente publication ont été soit repris des Publications 27 ou 617 de la CEI, soit spécifiquement approuvés aux fins de cette publication.
Publications de la CEI établies par le même Comité d'Etudes
L'attention du lecteur est attirée sur la page 3 de la couverture, qui énumère les publications de la CEI préparées par le Comité d'Etudes qui a établi la présente publication.
Revision of this publication
The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology.
Information on the work of revision, the issue of revised editions and amendment sheets may be obtained from IEC National Committees and from the following IEC sources :
- IEC Bulletin
- IEC Yearbook
- Catalogue of IEC Publications
Published yearly
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
| pages | |
|---|---|
| Extrait de l'arrêté du 12 février 2004 relatif à la composition du cahier des clauses techniques générales applicables aux marchés publics de travaux et approuvant ou modifiant divers fascicules | III |
| Circulaire n° 2004-16 du 4 mars 2004 relative à la modification du fascicule 56 du Cahier des clauses techniques générales applicables aux marchés publics de travaux | V |
| Rapport de présentation | IX |
| Fascicule 56 | |
| Table des matières | 1 |
| Fascicule 56 | 7 |
| Annexes | 77 |
| Liste des membres du groupe de travail | 129 |
TABLE DES MATIÈRES
| Pages | |
| Extraits du décret n° 83-253 du 8 avril 1987 relatif à la composition du cahier des clauses techniques générales applicables aux marchés publics de travaux et approuvant ou modifiant divers fascicules | V |
| Fascicule n° 76 — Textes et commentaires | 2 |
| Annexes | 41 |
| Rapport de présentation | 71 |
: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:
| Part 1: | Non-alloy steel tubes with specified room temperature properties |
| Part 2: | Non-alloy and alloy steel tubes with specified elevated temperature properties |
| Part 4: | Non-alloy and alloy steel tubes with specified low temperature properties |
| Part 5: | Stainless steel tubes |
Another European Standard series covering tubes for pressure purposes is:
| EN 10217: | Welded steel tubes for pressure purposes |
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)
| Designation | Mass kg/m | Sectional area cm² | Dimensions | Distances of centre of gravity | Sectional properties about axes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X-X = Y-Y | U-U | V-V | ||||||||||||||
| A mm | l mm | rroot mm | cx = cy cm | cu cm | cv cm | Ix = Iy cm⁴ | rx = ry cm | Zx = Zy cm³ | Iu cm⁴ | ru cm | Iv cm⁴ | rv cm | Zv cm³ | |||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) | (17) |
| 200 × 200 × 16 | 48,5 | 61,8 | 200 | 16 | 18 | 5,52 | 14,1 | 7,81 | 2 340 | 6,16 | 162 | 3 720 | 7,76 | 960 | 3,94 | 123 |
| 200 × 200 × 20 | 59,9 | 76,3 | 200 | 20 | 18 | 5,68 | 14,1 | 8,04 | 2 850 | 6,11 | 199 | 4 530 | 7,70 | 1 170 | 3,92 | 146 |
| 200 × 200 × 24 | 71,1 | 90,6 | 200 | 24 | 18 | 5,84 | 14,1 | 8,26 | 3 330 | 6,06 | 235 | 5 280 | 7,64 | 1 380 | 3,90 | 167 |
| 250 × 250 × 28 | 104 | 133 | 250 | 28 | 18 | 7,24 | 17,7 | 10,2 | 7 700 | 7,62 | 433 | 12 200 | 9,61 | 3 170 | 4,89 | 309 |
| 250 × 250 × 35 | 128 | 163 | 250 | 35 | 18 | 7,50 | 17,7 | 10,6 | 9 260 | 7,54 | 529 | 14 700 | 9,48 | 3 860 | 4,87 | 364 |
NOTES
- Member countries may choose, to be included in their national standards, the sizes which are required to meet their demand.
- 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.
- The sectional area has been calculated using the formula
S = [l/2 A - l) + 0,214 6 (rroot² - 2rtoe²)] × 1/100
where
S is the sectional area, in square centimetres;
l is the thickness, in millimetres;
rroot is the root radius, in millimetres;
rtoe is the toe radius, in millimetres;
A is the leg length, in millimetres.
- Mass is calculated on the basis of density of steel of 7,85 kg/dm³.
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