混凝土 - 水硬性混凝土的分类与命名

6 其他标准

某些情况下，必须详细说明混凝土名称的三个基本标准以外的其他标准。

存在疑问的情况具有不同的形式，且较难统计；此乃之所以下列其他标准清单没有丝毫限制性，混凝土用户或供应商可以对存在疑问的混凝土进行命名时采用一个或几个其他标准的原因：

• 强制使用或拒绝添加剂或添加物，
• 特殊水泥，
• 混凝土的特殊用途（严寒气候、高温度、颜色、短期龄强度、表面处治，等），
• 一般的侵蚀性环境
• 无需振动的混凝土。

7 混凝土名称

关于混凝土的名称，分类的三个一般标准被依次地写在同一行，并用连接号逐个分开，顺序如下：

稠度-特有强度-粒度；例如：

P-25-0/20

其他标准在接下来的一或几行中明确表示，例如：

TP-20-0/16

白水泥-f_cmin=7 天 15Mpa -A₂

热混凝土。

不同的《其他标准》的简称可在厂商和用户的协议上作相关规定。

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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of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.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.

5

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.

   4